2021/10/25 更新

写真a

ハヤサカ キヨシ
早坂 圭司
HAYASAKA Kiyoshi
所属
教育研究院 自然科学系 数理物質科学系列 教授
理学部 理学科 教授
自然科学研究科 数理物質科学専攻 教授
職名
教授
外部リンク

学位

  • 博士(理学) ( 2001年3月   北海道大学 )

  • 修士(理学) ( 1996年3月   北海道大学 )

  • 学士(理学) ( 1994年3月   北海道大学 )

研究キーワード

  • 素粒子加速器実験

研究分野

  • 自然科学一般 / 素粒子、原子核、宇宙線、宇宙物理にする実験

経歴(researchmap)

  • 新潟大学   理学部   教授

    2021年8月 - 現在

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    国名:日本国

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  • 新潟大学   研究推進機構   研究教授

    2019年8月 - 2021年8月

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  • 新潟大学   理学部   准教授

    2016年3月 - 2021年8月

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  • 名古屋大学   素粒子宇宙起源研究機構   准教授

    2010年6月 - 2016年2月

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  • 名古屋大学   素粒子宇宙起源研究機構   特任准教授

    2009年10月 - 2010年5月

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  • 名古屋大学   理学部   特任助教

    2008年10月 - 2009年9月

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  • 名古屋大学   理学部   研究員(科研費RA)

    2003年4月 - 2008年9月

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▶ 全件表示

経歴

  • 新潟大学   自然科学研究科 数理物質科学専攻   教授

    2021年8月 - 現在

  • 新潟大学   理学部 理学科   教授

    2021年8月 - 現在

  • 新潟大学   教育研究院 自然科学系 数理物質科学系列   教授

    2021年8月 - 現在

  • 新潟大学   理学部 理学科   准教授

    2017年4月 - 2021年8月

  • 新潟大学   宇宙物理科学   准教授

    2016年3月 - 2017年3月

学歴

  • 北海道大学大学院   理学研究科   物理学専攻博士課程

    1996年4月 - 2001年3月

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  • 北海道大学大学院   理学研究科   物理学専攻修士課程

    1994年4月 - 1996年3月

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  • 北海道大学   理学部   物理学科

    1990年4月 - 1994年3月

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論文

  • Measurement of branching fractions and CP asymmetries for Ds+→K+(η,π0) and Ds+→π+(η,π0) decays at Belle

    Y. Guan, A. J. Schwartz, K. Kinoshita, I. Adachi, H. Aihara, S. Al Said, D. M. Asner, H. Atmacan, V. Aulchenko, T. Aushev, R. Ayad, V. Babu, P. Behera, J. Bennett, M. Bessner, V. Bhardwaj, B. Bhuyan, T. Bilka, J. Biswal, G. Bonvicini, A. Bozek, M. Bračko, T. E. Browder, M. Campajola, D. Červenkov, M.-C. Chang, V. Chekelian, A. Chen, B. G. Cheon, K. Chilikin, K. Cho, S.-K. Choi, Y. Choi, S. Choudhury, D. Cinabro, S. Cunliffe, S. Das, G. De Nardo, R. Dhamija, F. Di Capua, J. Dingfelder, Z. Doležal, T. V. Dong, S. Eidelman, D. Epifanov, T. Ferber, D. Ferlewicz, A. Frey, B. G. Fulsom, R. Garg, V. Gaur, N. Gabyshev, A. Garmash, A. Giri, P. Goldenzweig, K. Gudkova, C. Hadjivasiliou, S. Halder, T. Hara, O. Hartbrich, K. Hayasaka, H. Hayashii, W.-S. Hou, C.-L. Hsu, T. Iijima, K. Inami, A. Ishikawa, R. Itoh, M. Iwasaki, Y. Iwasaki, W. W. Jacobs, S. Jia, Y. Jin, C. W. Joo, K. K. Joo, J. Kahn, A. B. Kaliyar, K. H. Kang, T. Kawasaki, H. Kichimi, C. Kiesling, C. H. Kim, D. Y. Kim, S. H. Kim, Y.-K. Kim, P. Kodyš, T. Konno, A. Korobov, S. Korpar, E. Kovalenko, P. Križan, R. Kroeger, P. Krokovny, M. Kumar, K. Kumara, A. Kuzmin, Y.-J. Kwon, K. Lalwani, J. S. Lange, I. S. Lee, S. C. Lee, P. Lewis, L. K. Li, Y. B. Li, L. Li Gioi, J. Libby, K. Lieret, D. Liventsev, C. MacQueen, M. Masuda, D. Matvienko, M. Merola, F. Metzner, K. Miyabayashi, R. Mizuk, G. B. Mohanty, M. Mrvar, R. Mussa, M. Nakao, Z. Natkaniec, A. Natochii, L. Nayak, M. Nayak, N. K. Nisar, S. Nishida, K. Nishimura, S. Ogawa, H. Ono, Y. Onuki, P. Oskin, P. Pakhlov, G. Pakhlova, T. Pang, S. Pardi, H. Park, S.-H. Park, S. Patra, S. Paul, T. K. Pedlar, R. Pestotnik, L. E. Piilonen, T. Podobnik, V. Popov, E. Prencipe, M. T. Prim, M. V. Purohit, M. Röhrken, A. Rostomyan, N. Rout, G. Russo, D. Sahoo, S. Sandilya, A. Sangal, L. Santelj, T. Sanuki, V. Savinov, G. Schnell, C. Schwanda, Y. Seino, K. Senyo, M. E. Sevior, M. Shapkin, C. Sharma, C. P. Shen, J.-G. Shiu, B. Shwartz, F. Simon, J. B. Singh, A. Sokolov, E. Solovieva, S. Stanič, M. Starič, Z. S. Stottler, M. Sumihama, M. Takizawa, U. Tamponi, K. Tanida, F. Tenchini, K. Trabelsi, T. Uglov, Y. Unno, S. Uno, P. Urquijo, R. Van Tonder, G. Varner, A. Vossen, E. Waheed, C. H. Wang, M.-Z. Wang, P. Wang, X. L. Wang, S. Watanuki, O. Werbycka, E. Won, X. Xu, B. D. Yabsley, W. Yan, S. B. Yang, H. Ye, J. H. Yin, C. Z. Yuan, Z. P. Zhang, V. Zhilich, V. Zhukova

    Physical Review D   103 ( 11 )   2021年6月

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    掲載種別:研究論文(学術雑誌)   出版者・発行元:American Physical Society (APS)  

    DOI: 10.1103/physrevd.103.112005

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    その他リンク: http://harvest.aps.org/v2/journals/articles/10.1103/PhysRevD.103.112005/fulltext

  • Sparse-Coded Dynamic Mode Decomposition on Graph for Prediction of River Water Level Distribution

    Yusuke ARAI, Shogo MURAMATSU, Hiroyasu YASUDA, Kiyoshi HAYASAKA, Yu OTAKE

    ICASSP 2021 - 2021 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)   2021年6月

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    掲載種別:研究論文(国際会議プロシーディングス)   出版者・発行元:IEEE  

    DOI: 10.1109/icassp39728.2021.9414533

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  • Measurements of the branching fractions of Λc+→pη and Λc+→pπ0 decays at Belle

    S. X. Li, C. P. Shen, I. Adachi, J. K. Ahn, H. Aihara, D. M. Asner, T. Aushev, R. Ayad, V. Babu, S. Bahinipati, P. Behera, J. Bennett, F. Bernlochner, M. Bessner, V. Bhardwaj, B. Bhuyan, T. Bilka, J. Biswal, A. Bobrov, A. Bozek, T. E. Browder, M. Campajola, L. Cao, D. Červenkov, M.-C. Chang, A. Chen, B. G. Cheon, K. Chilikin, H. E. Cho, K. Cho, Y. Choi, S. Choudhury, D. Cinabro, S. Cunliffe, S. Das, N. Dash, G. De Nardo, R. Dhamija, F. Di Capua, Z. Doležal, T. V. Dong, S. Eidelman, D. Epifanov, T. Ferber, D. Ferlewicz, B. G. Fulsom, R. Garg, V. Gaur, A. Garmash, A. Giri, P. Goldenzweig, B. Golob, O. Grzymkowska, K. Gudkova, C. Hadjivasiliou, O. Hartbrich, K. Hayasaka, H. Hayashii, M. T. Hedges, W.-S. Hou, C.-L. Hsu, T. Iijima, K. Inami, G. Inguglia, A. Ishikawa, R. Itoh, M. Iwasaki, Y. Iwasaki, W. W. Jacobs, E.-J. Jang, S. Jia, Y. Jin, C. W. Joo, K. K. Joo, A. B. Kaliyar, K. H. Kang, G. Karyan, Y. Kato, T. Kawasaki, H. Kichimi, B. H. Kim, C. H. Kim, D. Y. Kim, K.-H. Kim, S. H. Kim, Y.-K. Kim, K. Kinoshita, P. Kodyš, T. Konno, A. Korobov, S. Korpar, E. Kovalenko, P. Križan, R. Kroeger, P. Krokovny, T. Kuhr, M. Kumar, K. Kumara, A. Kuzmin, Y.-J. Kwon, K. Lalwani, J. S. Lange, I. S. Lee, S. C. Lee, C. H. Li, L. K. Li, Y. B. Li, L. Li Gioi, J. Libby, K. Lieret, D. Liventsev, M. Masuda, T. Matsuda, D. Matvienko, M. Merola, F. Metzner, R. Mizuk, S. Mohanty, T. Mori, M. Nakao, Z. Natkaniec, A. Natochii, L. Nayak, M. Niiyama, N. K. Nisar, S. Nishida, H. Ono, Y. Onuki, P. Pakhlov, G. Pakhlova, T. Pang, S. Pardi, H. Park, S.-H. Park, S. Patra, S. Paul, T. K. Pedlar, R. Pestotnik, L. E. Piilonen, T. Podobnik, V. Popov, E. Prencipe, M. T. Prim, M. Röhrken, A. Rostomyan, N. Rout, G. Russo, D. Sahoo, Y. Sakai, S. Sandilya, A. Sangal, L. Santelj, T. Sanuki, V. Savinov, G. Schnell, J. Schueler, C. Schwanda, Y. Seino, K. Senyo, M. E. Sevior, M. Shapkin, C. Sharma, V. Shebalin, J.-G. Shiu, B. Shwartz, E. Solovieva, S. Stanič, M. Starič, Z. S. Stottler, M. Sumihama, T. Sumiyoshi, W. Sutcliffe, M. Takizawa, K. Tanida, Y. Tao, F. Tenchini, K. Trabelsi, M. Uchida, S. Uehara, T. Uglov, K. Uno, S. Uno, P. Urquijo, R. Van Tonder, G. Varner, A. Vossen, C. H. Wang, E. Wang, M.-Z. Wang, P. Wang, S. Watanuki, E. Won, X. Xu, B. D. Yabsley, W. Yan, S. B. Yang, H. Ye, J. Yelton, J. H. Yin, C. Z. Yuan, Y. Yusa, Z. P. Zhang, V. Zhilich, V. Zhukova, V. Zhulanov

    Physical Review D   103 ( 7 )   2021年4月

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    掲載種別:研究論文(学術雑誌)   出版者・発行元:American Physical Society (APS)  

    DOI: 10.1103/physrevd.103.072004

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    その他リンク: http://harvest.aps.org/v2/journals/articles/10.1103/PhysRevD.103.072004/fulltext

  • Test of Lepton-Flavor Universality in B -> K*l(+)l(-) Decays at Belle

    S. Wehle, Adachi, I, K. Adamczyk, H. Aihara, D. M. Asner, H. Atmacan, Aulchenko, V, T. Aushev, R. Ayad, Babu, V, P. Behera, M. Berger, Bhardwaj, V, J. Biswal, A. Bozek, T. E. Browder, M. Campajola, L. Cao, M-C Chang, A. Chen, B. G. Cheon, K. Chilikin, K. Cho, Y. Choi, S. Choudhury, D. Cinabro, S. Cunliffe, N. Dash, G. De Nardo, F. Di Capua, S. Dubey, S. Eidelman, D. Epifanov, T. Ferber, B. G. Fulsom, R. Garg, Gaur, V, N. Gabyshev, A. Garmash, A. Giri, P. Goldenzweig, D. Greenwald, Y. Guan, J. Haba, O. Hartbrich, K. Hayasaka, H. Hayashii, M. T. Hedges, T. Higuchi, W-S Hou, C-L Hsu, T. Iijima, K. Inami, G. Inguglia, A. Ishikawa, R. Itoh, M. Iwasaki, Y. Iwasaki, W. W. Jacobs, S. Jia, Y. Jin, D. Joffe, J. Kahn, A. B. Kaliyar, G. Karyan, H. Kichimi, D. Y. Kim, K. T. Kim, S. H. Kim, Y-K Kim, K. Kinoshita, Komarov, I, S. Korpar, D. Kotchetkov, R. Kroeger, P. Krokovny, T. Kuhr, R. Kulasiri, R. Kumar, K. Kumara, A. Kuzmin, Y-J Kwon, J. S. Lange, J. Y. Lee, S. C. Lee, Y. B. Li, J. Libby, Z. Liptak, D. Liventsev, T. Luo, J. MacNaughton, M. Masuda, T. Matsuda, J. T. McNeil, M. Merola, F. Metzner, H. Miyata, R. Mizuk, G. B. Mohanty, T. J. Moon, R. Mussa, M. Nakao, A. Natochii, M. Nayak, C. Niebuhr, M. Niiyama, N. K. Nisar, S. Nishida, K. Ogawa, S. Ogawa, H. Ono, Y. Onuki, P. Pakhlov, G. Pakhlova, H. Park, S-H Park, T. K. Pedlar, R. Pestotnik, L. E. Piilonen, T. Podobnik, Popov, V, E. Prencipe, M. T. Prim, P. K. Resmi, M. Ritter, A. Rostomyan, N. Rout, G. Russo, D. Sahoo, Y. Sakai, S. Sandilya, A. Sangal, L. Santelj, Savinov, V, O. Schneider, G. Schnell, J. Schueler, C. Schwanda, A. J. Schwartz, Y. Seino, K. Senyo, M. E. Sevior, M. Shapkin, J-G Shiu, B. Shwartz, E. Solovieva, J. F. Strube, T. Sumiyoshi, W. Sutcliffe, M. Takizawa, U. Tamponi, K. Tanida, Y. Tao, F. Tenchini, K. Trabelsi, M. Uchida, T. Uglov, Y. Unno, S. Uno, Y. Ushiroda, S. E. Vahsen, R. Van Tonder, G. Varner, K. E. Varvell, V. Vorobyev, C. H. Wang, M-Z Wang, P. Wang, X. L. Wang, E. Won, X. Xu, S. B. Yang, H. Ye, J. H. Yin, C. Z. Yuan, Z. P. Zhang, Zhilich, V, Zhukova, V, Zhulanov, V

    PHYSICAL REVIEW LETTERS   126 ( 16 )   2021年4月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We present a measurement of R-K(*), the branching fraction ratio B(B -> K* mu(+)mu(-))/B(B -> K* e(+) e(-)), for both charged and neutral B mesons. The ratio for the charged case RK*+ is the first measurement ever performed. In addition, we report absolute branching fractions for the individual modes in bins of the squared dilepton invariant mass q(2). The analysis is based on a data sample of 711 fb(-1), containing 772 x 10(6) B (B) over bar events, recorded at the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. The obtained results are consistent with standard model expectations.

    DOI: 10.1103/PhysRevLett.126.161801

    Web of Science

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  • Measurement of branching fraction and search for CP violation in B→ϕϕK

    S. Mohanty, A. B. Kaliyar, V. Gaur, G. B. Mohanty, I. Adachi, K. Adamczyk, H. Aihara, S. Al Said, D. M. Asner, H. Atmacan, V. Aulchenko, T. Aushev, T. Aziz, V. Babu, S. Bahinipati, P. Behera, M. Bessner, V. Bhardwaj, T. Bilka, J. Biswal, A. Bobrov, A. Bozek, M. Bračko, T. E. Browder, M. Campajola, D. Červenkov, V. Chekelian, A. Chen, B. G. Cheon, K. Chilikin, K. Cho, S.-J. Cho, S.-K. Choi, Y. Choi, S. Choudhury, D. Cinabro, S. Cunliffe, S. Das, N. Dash, G. De Nardo, R. Dhamija, F. Di Capua, Z. Doležal, T. V. Dong, S. Eidelman, T. Ferber, B. G. Fulsom, N. Gabyshev, A. Garmash, A. Giri, P. Goldenzweig, B. Golob, O. Grzymkowska, Y. Guan, K. Gudkova, C. Hadjivasiliou, S. Halder, K. Hayasaka, H. Hayashii, W.-S. Hou, C.-L. Hsu, K. Inami, A. Ishikawa, R. Itoh, M. Iwasaki, W. W. Jacobs, H. B. Jeon, S. Jia, Y. Jin, K. K. Joo, K. H. Kang, G. Karyan, B. H. Kim, C. H. Kim, D. Y. Kim, S. H. Kim, Y.-K. Kim, K. Kinoshita, P. Kodyš, T. Konno, S. Korpar, D. Kotchetkov, P. Križan, P. Krokovny, R. Kulasiri, M. Kumar, R. Kumar, K. Kumara, Y.-J. Kwon, K. Lalwani, S. C. Lee, J. Li, L. K. Li, Y. B. Li, L. Li Gioi, J. Libby, Z. Liptak, D. Liventsev, C. MacQueen, M. Masuda, T. Matsuda, M. Merola, K. Miyabayashi, R. Mizuk, T. J. Moon, R. Mussa, M. Nakao, A. Natochii, L. Nayak, M. Nayak, N. K. Nisar, S. Nishida, K. Ogawa, S. Ogawa, Y. Onuki, P. Oskin, G. Pakhlova, S. Pardi, C. W. Park, H. Park, S.-H. Park, S. Patra, T. K. Pedlar, R. Pestotnik, L. E. Piilonen, T. Podobnik, V. Popov, E. Prencipe, M. T. Prim, M. Röhrken, A. Rostomyan, N. Rout, G. Russo, D. Sahoo, Y. Sakai, S. Sandilya, A. Sangal, T. Sanuki, V. Savinov, G. Schnell, J. Schueler, C. Schwanda, A. J. Schwartz, Y. Seino, K. Senyo, M. E. Sevior, M. Shapkin, C. Sharma, J.-G. Shiu, B. Shwartz, F. Simon, E. Solovieva, M. Starič, Z. S. Stottler, J. F. Strube, T. Sumiyoshi, M. Takizawa, K. Tanida, Y. Tao, F. Tenchini, M. Uchida, Y. Unno, S. Uno, Y. Usov, S. E. Vahsen, R. Van Tonder, G. Varner, K. E. Varvell, A. Vinokurova, V. Vorobyev, C. H. Wang, E. Wang, M.-Z. Wang, P. Wang, X. L. Wang, S. Watanuki, J. Wiechczynski, E. Won, X. Xu, B. D. Yabsley, W. Yan, H. Ye, J. H. Yin, Z. P. Zhang, V. Zhilich, V. Zhukova

    Physical Review D   103 ( 5 )   2021年3月

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    掲載種別:研究論文(学術雑誌)   出版者・発行元:American Physical Society (APS)  

    DOI: 10.1103/physrevd.103.052013

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    その他リンク: http://harvest.aps.org/v2/journals/articles/10.1103/PhysRevD.103.052013/fulltext

  • Search for lepton-number- and baryon-number-violating tau decays at Belle

    D. Sahoo, G. B. Mohanty, K. Trabelsi, I. Adachi, K. Adamczyk, H. Aihara, S. Al Said, D. M. Asner, T. Aushev, R. Ayad, T. Aziz, V. Babu, S. Bahinipati, P. Behera, J. Bennett, M. Bessner, V. Bhardwaj, T. Bilka, J. Biswal, G. Bonvicini, A. Bozek, M. Bračko, T. E. Browder, M. Campajola, L. Cao, D. Červenkov, M.-C. Chang, P. Chang, V. Chekelian, A. Chen, B. G. Cheon, K. Chilikin, H. E. Cho, K. Cho, S.-K. Choi, Y. Choi, S. Choudhury, D. Cinabro, S. Cunliffe, S. Das, N. Dash, G. De Nardo, F. Di Capua, J. Dingfelder, Z. Doležal, T. V. Dong, S. Dubey, S. Eidelman, D. Epifanov, T. Ferber, D. Ferlewicz, A. Frey, B. G. Fulsom, R. Garg, V. Gaur, A. Garmash, A. Giri, P. Goldenzweig, B. Golob, Y. Guan, K. Gudkova, C. Hadjivasiliou, S. Halder, T. Hara, O. Hartbrich, K. Hayasaka, H. Hayashii, M. T. Hedges, M. Hernandez Villanueva, W.-S. Hou, C.-L. Hsu, K. Huang, T. Iijima, K. Inami, G. Inguglia, A. Ishikawa, R. Itoh, M. Iwasaki, Y. Iwasaki, W. W. Jacobs, H. B. Jeon, S. Jia, Y. Jin, C. W. Joo, K. K. Joo, A. B. Kaliyar, K. H. Kang, G. Karyan, T. Kawasaki, H. Kichimi, C. Kiesling, D. Y. Kim, S. H. Kim, Y.-K. Kim, K. Kinoshita, P. Kodyš, T. Konno, S. Korpar, D. Kotchetkov, P. Križan, R. Kroeger, P. Krokovny, T. Kuhr, M. Kumar, R. Kumar, K. Kumara, A. Kuzmin, Y.-J. Kwon, K. Lalwani, I. S. Lee, S. C. Lee, C. H. Li, J. Li, L. K. Li, Y. B. Li, J. Libby, K. Lieret, D. Liventsev, T. Luo, J. MacNaughton, M. Masuda, T. Matsuda, D. Matvienko, M. Merola, F. Metzner, K. Miyabayashi, R. Mizuk, S. Mohanty, T. J. Moon, R. Mussa, E. Nakano, M. Nakao, Z. Natkaniec, A. Natochii, L. Nayak, M. Nayak, M. Niiyama, N. K. Nisar, S. Nishida, S. Ogawa, H. Ono, Y. Onuki, P. Oskin, P. Pakhlov, G. Pakhlova, T. Pang, S. Pardi, C. W. Park, H. Park, S. Patra, S. Paul, T. K. Pedlar, R. Pestotnik, L. E. Piilonen, T. Podobnik, V. Popov, E. Prencipe, M. T. Prim, M. Ritter, M. Röhrken, A. Rostomyan, N. Rout, M. Rozanska, G. Russo, Y. Sakai, S. Sandilya, L. Santelj, T. Sanuki, V. Savinov, G. Schnell, J. Schueler, C. Schwanda, A. J. Schwartz, Y. Seino, K. Senyo, M. E. Sevior, M. Shapkin, C. Sharma, C. P. Shen, J.-G. Shiu, B. Shwartz, F. Simon, A. Sokolov, E. Solovieva, S. Stanič, M. Starič, Z. S. Stottler, J. F. Strube, T. Sumiyoshi, M. Takizawa, U. Tamponi, K. Tanida, F. Tenchini, M. Uchida, S. Uehara, T. Uglov, Y. Unno, S. Uno, P. Urquijo, Y. Ushiroda, S. E. Vahsen, R. Van Tonder, G. Varner, A. Vinokurova, V. Vorobyev, E. Waheed, C. H. Wang, E. Wang, M.-Z. Wang, P. Wang, M. Watanabe, S. Watanuki, S. Wehle, E. Won, X. Xu, B. D. Yabsley, W. Yan, S. B. Yang, H. Ye, J. Yelton, J. H. Yin, Y. Yusa, V. Zhilich, V. Zhukova, V. Zhulanov

    Physical Review D   102 ( 11 )   2020年12月

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    掲載種別:研究論文(学術雑誌)   出版者・発行元:American Physical Society (APS)  

    DOI: 10.1103/physrevd.102.111101

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  • Measurement of the charm-mixing parameter yCP in D0→KS0ω decays at Belle

    M. Nayak, D. Cinabro, I. Adachi, H. Aihara, S. Al Said, D. M. Asner, H. Atmacan, T. Aushev, R. Ayad, V. Babu, S. Bahinipati, P. Behera, C. Beleño, J. Bennett, V. Bhardwaj, B. Bhuyan, J. Biswal, G. Bonvicini, A. Bozek, M. Bračko, T. E. Browder, M. Campajola, L. Cao, D. Červenkov, A. Chen, B. G. Cheon, K. Chilikin, H. E. Cho, K. Cho, S.-K. Choi, Y. Choi, S. Choudhury, S. Cunliffe, N. Dash, G. De Nardo, F. Di Capua, S. Di Carlo, Z. Doležal, T. V. Dong, S. Eidelman, D. Epifanov, J. E. Fast, T. Ferber, D. Ferlewicz, B. G. Fulsom, R. Garg, V. Gaur, N. Gabyshev, A. Garmash, A. Giri, P. Goldenzweig, B. Golob, O. Grzymkowska, T. Hara, K. Hayasaka, H. Hayashii, W.-S. Hou, C.-L. Hsu, K. Inami, G. Inguglia, A. Ishikawa, R. Itoh, M. Iwasaki, Y. Iwasaki, W. W. Jacobs, H. B. Jeon, S. Jia, Y. Jin, K. K. Joo, A. B. Kaliyar, K. H. Kang, G. Karyan, T. Kawasaki, C. Kiesling, B. H. Kim, C. H. Kim, D. Y. Kim, S. H. Kim, S. Korpar, D. Kotchetkov, P. Križan, R. Kroeger, P. Krokovny, T. Kuhr, R. Kumar, Y.-J. Kwon, S. C. Lee, L. K. Li, Y. B. Li, L. Li Gioi, J. Libby, K. Lieret, D. Liventsev, M. Masuda, T. Matsuda, D. Matvienko, M. Merola, K. Miyabayashi, R. Mizuk, G. B. Mohanty, T. J. Moon, R. Mussa, M. Nakao, Z. Natkaniec, M. Niiyama, N. K. Nisar, S. Nishida, K. Nishimura, K. Ogawa, S. Ogawa, H. Ono, P. Pakhlov, G. Pakhlova, S. Pardi, H. Park, S.-H. Park, S. Patra, S. Paul, T. K. Pedlar, R. Pestotnik, L. E. Piilonen, T. Podobnik, V. Popov, E. Prencipe, M. T. Prim, P. K. Resmi, M. Ritter, A. Rostomyan, N. Rout, G. Russo, D. Sahoo, Y. Sakai, S. Sandilya, T. Sanuki, V. Savinov, O. Schneider, G. Schnell, J. Schueler, C. Schwanda, A. J. Schwartz, Y. Seino, K. Senyo, M. E. Sevior, V. Shebalin, J.-G. Shiu, A. Sokolov, E. Solovieva, S. Stanič, M. Starič, Z. S. Stottler, J. F. Strube, T. Sumiyoshi, M. Takizawa, U. Tamponi, K. Tanida, F. Tenchini, K. Trabelsi, M. Uchida, T. Uglov, Y. Unno, S. Uno, P. Urquijo, Y. Ushiroda, Y. Usov, R. Van Tonder, G. Varner, K. E. Varvell, A. Vinokurova, A. Vossen, C. H. Wang, M.-Z. Wang, P. Wang, X. L. Wang, M. Watanabe, E. Won, X. Xu, S. B. Yang, H. Ye, Z. P. Zhang, V. Zhilich, V. Zhukova, V. Zhulanov

    Physical Review D   102 ( 7 )   2020年10月

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    掲載種別:研究論文(学術雑誌)   出版者・発行元:American Physical Society (APS)  

    DOI: 10.1103/physrevd.102.071102

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  • Search for B0 decays to invisible final states ( +γ ) at Belle

    Y. Ku, P. Chang, I. Adachi, K. Adamczyk, H. Aihara, D. M. Asner, T. Aushev, R. Ayad, P. Behera, C. Beleño, J. Bennett, V. Bhardwaj, T. Bilka, J. Biswal, G. Bonvicini, A. Bozek, M. Bračko, M.-C. Chang, V. Chekelian, K. Chilikin, K. Cho, S.-K. Choi, Y. Choi, D. Cinabro, S. Cunliffe, N. Dash, G. De Nardo, T. V. Dong, S. Eidelman, D. Epifanov, J. E. Fast, B. G. Fulsom, R. Garg, V. Gaur, N. Gabyshev, A. Garmash, P. Goldenzweig, O. Grzymkowska, Y. Guan, O. Hartbrich, K. Hayasaka, H. Hayashii, M. Hernandez Villanueva, T. Higuchi, W.-S. Hou, C.-L. Hsu, K. Huang, K. Inami, G. Inguglia, A. Ishikawa, R. Itoh, M. Iwasaki, Y. Iwasaki, S. Jia, Y. Jin, K. H. Kang, T. Kawasaki, H. Kichimi, C. Kiesling, C. H. Kim, D. Y. Kim, T. D. Kimmel, K. Kinoshita, P. Kodyš, S. Korpar, P. Križan, R. Kroeger, P. Krokovny, T. Kuhr, R. Kulasiri, R. Kumar, Y.-J. Kwon, Y.-T. Lai, Y. B. Li, L. Li Gioi, J. Libby, K. Lieret, C. MacQueen, D. Matvienko, M. Merola, R. Mizuk, G. B. Mohanty, T. J. Moon, T. Mori, R. Mussa, Z. Natkaniec, M. Nayak, N. K. Nisar, S. Nishida, K. Nishimura, K. Ogawa, S. Ogawa, H. Ono, P. Oskin, P. Pakhlov, G. Pakhlova, H. Park, S.-H. Park, S. Patra, T. K. Pedlar, R. Pestotnik, L. E. Piilonen, T. Podobnik, V. Popov, M. T. Prim, M. Ritter, M. Röhrken, A. Rostomyan, N. Rout, G. Russo, Y. Sakai, L. Santelj, T. Sanuki, V. Savinov, G. Schnell, J. Schueler, C. Schwanda, A. J. Schwartz, K. Senyo, M. Shapkin, J.-G. Shiu, B. Shwartz, A. Sokolov, E. Solovieva, M. Starič, Z. S. Stottler, M. Sumihama, T. Sumiyoshi, M. Takizawa, U. Tamponi, K. Tanida, F. Tenchini, K. Trabelsi, M. Uchida, T. Uglov, Y. Unno, S. Uno, P. Urquijo, Y. Usov, G. Varner, K. E. Varvell, A. Vinokurova, C. H. Wang, E. Wang, M.-Z. Wang, P. Wang, X. L. Wang, M. Watanabe, E. Won, X. Xu, S. B. Yang, H. Ye, C. Z. Yuan, Z. P. Zhang, V. Zhukova

    Physical Review D   102 ( 1 )   2020年7月

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    掲載種別:研究論文(学術雑誌)   出版者・発行元:American Physical Society (APS)  

    DOI: 10.1103/physrevd.102.012003

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  • Dalitz analysis of D0→K−π+η decays at Belle

    Y. Q. Chen, L. K. Li, W. B. Yan, I. Adachi, H. Aihara, S. Al Said, D. M. Asner, H. Atmacan, V. Aulchenko, T. Aushev, R. Ayad, V. Babu, I. Badhrees, S. Bahinipati, P. Behera, J. Bennett, V. Bhardwaj, T. Bilka, J. Biswal, A. Bozek, M. Bračko, T. E. Browder, M. Campajola, L. Cao, D. Červenkov, M.-C. Chang, V. Chekelian, A. Chen, B. G. Cheon, K. Chilikin, H. E. Cho, K. Cho, S.-K. Choi, Y. Choi, S. Choudhury, D. Cinabro, S. Cunliffe, N. Dash, G. De Nardo, F. Di Capua, Z. Doležal, T. V. Dong, S. Eidelman, D. Epifanov, J. E. Fast, T. Ferber, D. Ferlewicz, B. G. Fulsom, R. Garg, V. Gaur, N. Gabyshev, A. Garmash, A. Giri, P. Goldenzweig, B. Golob, Y. Guan, O. Hartbrich, K. Hayasaka, H. Hayashii, W.-S. Hou, C.-L. Hsu, K. Inami, G. Inguglia, A. Ishikawa, R. Itoh, M. Iwasaki, Y. Iwasaki, W. W. Jacobs, E.-J. Jang, H. B. Jeon, S. Jia, Y. Jin, K. K. Joo, K. H. Kang, G. Karyan, T. Kawasaki, D. Y. Kim, S. H. Kim, T. D. Kimmel, K. Kinoshita, P. Kodyš, S. Korpar, P. Križan, R. Kroeger, P. Krokovny, T. Kuhr, R. Kulasiri, R. Kumar, A. Kuzmin, Y.-J. Kwon, K. Lalwani, J. S. Lange, I. S. Lee, S. C. Lee, Y. B. Li, L. Li Gioi, J. Libby, K. Lieret, D. Liventsev, J. MacNaughton, C. MacQueen, M. Masuda, D. Matvienko, M. Merola, K. Miyabayashi, R. Mizuk, S. Mohanty, M. Mrvar, R. Mussa, M. Nakao, Z. Natkaniec, M. Nayak, S. Nishida, S. Ogawa, H. Ono, P. Oskin, P. Pakhlov, G. Pakhlova, S. Pardi, H. Park, S. Patra, S. Paul, T. K. Pedlar, R. Pestotnik, L. E. Piilonen, T. Podobnik, V. Popov, E. Prencipe, M. T. Prim, A. Rabusov, M. Ritter, M. Röhrken, N. Rout, G. Russo, D. Sahoo, Y. Sakai, T. Sanuki, V. Savinov, O. Schneider, G. Schnell, J. Schueler, C. Schwanda, A. J. Schwartz, Y. Seino, K. Senyo, M. E. Sevior, M. Shapkin, V. Shebalin, J.-G. Shiu, A. Sokolov, E. Solovieva, M. Starič, Z. S. Stottler, M. Sumihama, T. Sumiyoshi, W. Sutcliffe, M. Takizawa, K. Tanida, F. Tenchini, K. Trabelsi, M. Uchida, T. Uglov, S. Uno, P. Urquijo, G. Varner, V. Vorobyev, E. Waheed, C. H. Wang, E. Wang, M.-Z. Wang, P. Wang, M. Watanabe, E. Won, X. Xu, S. B. Yang, H. Ye, J. H. Yin, C. Z. Yuan, Y. Yusa, Z. P. Zhang, V. Zhilich, V. Zhukova, V. Zhulanov

    Physical Review D   102 ( 1 )   2020年7月

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    掲載種別:研究論文(学術雑誌)   出版者・発行元:American Physical Society (APS)  

    DOI: 10.1103/physrevd.102.012002

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  • Evidence for a vector charmoniumlike state in e+e−→Ds+Ds2*(2573)−+c.c.

    S. Jia, C. P. Shen, I. Adachi, H. Aihara, S. Al Said, D. M. Asner, H. Atmacan, V. Aulchenko, T. Aushev, R. Ayad, I. Badhrees, P. Behera, K. Belous, J. Bennett, D. Besson, V. Bhardwaj, T. Bilka, J. Biswal, G. Bonvicini, A. Bozek, M. Bračko, T. E. Browder, M. Campajola, D. Červenkov, P. Chang, A. Chen, B. G. Cheon, K. Chilikin, K. Cho, S.-K. Choi, Y. Choi, S. Choudhury, D. Cinabro, S. Cunliffe, N. Dash, G. De Nardo, F. Di Capua, Z. Doležal, T. V. Dong, S. Eidelman, D. Epifanov, J. E. Fast, T. Ferber, D. Ferlewicz, B. G. Fulsom, R. Garg, V. Gaur, N. Gabyshev, A. Garmash, A. Giri, P. Goldenzweig, B. Golob, O. Grzymkowska, O. Hartbrich, K. Hayasaka, H. Hayashii, W.-S. Hou, C.-L. Hsu, K. Inami, G. Inguglia, A. Ishikawa, R. Itoh, M. Iwasaki, Y. Iwasaki, H. B. Jeon, Y. Jin, K. K. Joo, G. Karyan, T. Kawasaki, C. Kiesling, B. H. Kim, D. Y. Kim, K.-H. Kim, S. H. Kim, Y.-K. Kim, K. Kinoshita, P. Kodyš, S. Korpar, D. Kotchetkov, P. Križan, R. Kroeger, P. Krokovny, R. Kulasiri, A. Kuzmin, Y.-J. Kwon, K. Lalwani, J. S. Lange, S. C. Lee, L. K. Li, Y. B. Li, L. Li Gioi, J. Libby, K. Lieret, D. Liventsev, J. MacNaughton, C. MacQueen, M. Masuda, T. Matsuda, D. Matvienko, M. Merola, R. Mizuk, T. J. Moon, T. Mori, M. Mrvar, M. Nakao, M. Nayak, N. K. Nisar, S. Nishida, S. Ogawa, H. Ono, P. Oskin, P. Pakhlov, G. Pakhlova, S. Pardi, S. Patra, S. Paul, T. K. Pedlar, R. Pestotnik, L. E. Piilonen, T. Podobnik, V. Popov, E. Prencipe, M. T. Prim, A. Rostomyan, N. Rout, G. Russo, Y. Sakai, S. Sandilya, L. Santelj, T. Sanuki, V. Savinov, G. Schnell, J. Schueler, C. Schwanda, Y. Seino, K. Senyo, M. E. Sevior, M. Shapkin, V. Shebalin, J.-G. Shiu, B. Shwartz, E. Solovieva, S. Stanič, M. Starič, Z. S. Stottler, J. F. Strube, M. Sumihama, T. Sumiyoshi, W. Sutcliffe, M. Takizawa, K. Tanida, F. Tenchini, M. Uchida, T. Uglov, Y. Unno, S. Uno, Y. Usov, R. Van Tonder, G. Varner, A. Vinokurova, C. H. Wang, E. Wang, M.-Z. Wang, P. Wang, X. L. Wang, M. Watanabe, E. Won, X. Xu, W. Yan, S. B. Yang, H. Ye, C. Z. Yuan, Y. Yusa, Z. P. Zhang, V. Zhilich, V. Zhukova, V. Zhulanov

    Physical Review D   101 ( 9 )   2020年5月

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    掲載種別:研究論文(学術雑誌)   出版者・発行元:American Physical Society (APS)  

    DOI: 10.1103/physrevd.101.091101

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  • First search for the η<inf>c2</inf>(1D) in B decays at Belle 査読

    K. Chilikin, I. Adachi, H. Aihara, S. Al Said, D. M. Asner, V. Aulchenko, T. Aushev, R. Ayad, V. Babu, S. Bahinipati, P. Behera, C. Beleño, K. Belous, J. Bennett, V. Bhardwaj, T. Bilka, J. Biswal, G. Bonvicini, A. Bozek, M. Bračko, T. E. Browder, M. Campajola, L. Cao, D. Červenkov, M. C. Chang, V. Chekelian, A. Chen, B. G. Cheon, K. Cho, S. K. Choi, Y. Choi, S. Choudhury, D. Cinabro, S. Cunliffe, N. Dash, G. De Nardo, F. Di Capua, Z. Doležal, T. V. Dong, S. Eidelman, D. Epifanov, J. E. Fast, T. Ferber, D. Ferlewicz, B. G. Fulsom, R. Garg, V. Gaur, N. Gabyshev, A. Garmash, A. Giri, P. Goldenzweig, B. Golob, O. Grzymkowska, O. Hartbrich, K. Hayasaka, H. Hayashii, M. Hernandez Villanueva, W. S. Hou, C. L. Hsu, K. Inami, G. Inguglia, A. Ishikawa, R. Itoh, M. Iwasaki, Y. Iwasaki, W. W. Jacobs, E. J. Jang, S. Jia, Y. Jin, K. K. Joo, A. B. Kaliyar, G. Karyan, Y. Kato, T. Kawasaki, C. Kiesling, C. H. Kim, D. Y. Kim, K. H. Kim, S. H. Kim, Y. K. Kim, T. D. Kimmel, K. Kinoshita, P. Kodyš, S. Korpar, P. Križan, R. Kroeger, P. Krokovny, T. Kuhr, R. Kulasiri, R. Kumar, A. Kuzmin, Y. J. Kwon, K. Lalwani, J. S. Lange, I. S. Lee, S. C. Lee, L. K. Li, Y. B. Li, L. Li Gioi, J. Libby

    Journal of High Energy Physics   2020 ( 5 )   2020年5月

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    掲載種別:研究論文(学術雑誌)  

    © 2020, The Author(s). The first dedicated search for the ηc2(1D) is carried out using the decays B+→ ηc2(1D)K+, B0 → ηc2(1D)KS0, B0→ ηc2(1D)π−K+, and B+→ ηc2(1D)π+KS0 with ηc2(1D) → hcγ. No significant signal is found. For the ηc2(1D) mass range between 3795 and 3845 MeV/c2, the branching-fraction upper limits are determined to be ℬ(B+→ ηc2(1D)K+) × ℬ(ηc2(1D) → hcγ) < 3.7 × 10−5, ℬ(B0→ ηc2(1D)K0) × ℬ(ηc2(1D) → hcγ) < 3.5 × 10−5, ℬ(B0→ ηc2(1D)π−K+) × ℬ(ηc2(1D) → hcγ) < 1.0 × 10−4, and ℬ(B+→ ηc2(1D)π+KS0) × ℬ(ηc2(1D) → hcγ) < 1.1 × 10−4 at 90% C.L. The analysis is based on the 711 fb−1 data sample collected on the ϒ(4S) resonance by the Belle detector, which operated at the KEKB asymmetric-energy e+e− collider. [Figure not available: see fulltext.]

    DOI: 10.1007/JHEP05(2020)034

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  • Measurement of R (D) and R (D∗) with a Semileptonic Tagging Method 査読

    G. Caria, P. Urquijo, I. Adachi, H. Aihara, S. Al Said, D. M. Asner, H. Atmacan, T. Aushev, V. Babu, I. Badhrees, S. Bahinipati, A. M. Bakich, P. Behera, C. Beleño, J. Bennett, B. Bhuyan, T. Bilka, J. Biswal, A. Bozek, M. Bračko, T. E. Browder, M. Campajola, D. Červenkov, P. Chang, R. Cheaib, V. Chekelian, A. Chen, B. G. Cheon, K. Chilikin, H. E. Cho, K. Cho, Y. Choi, S. Choudhury, D. Cinabro, S. Cunliffe, N. Dash, G. De Nardo, F. Di Capua, S. Di Carlo, Z. DoleŽal, T. V. Dong, S. Eidelman, D. Epifanov, J. E. Fast, T. Ferber, D. Ferlewicz, B. G. Fulsom, R. Garg, V. Gaur, N. Gabyshev, A. Garmash, A. Giri, P. Goldenzweig, D. Greenwald, O. Grzymkowska, Y. Guan, O. Hartbrich, K. Hayasaka, H. Hayashii, T. Higuchi, W. S. Hou, C. L. Hsu, T. Iijima, K. Inami, G. Inguglia, A. Ishikawa, R. Itoh, M. Iwasaki, Y. Iwasaki, W. W. Jacobs, H. B. Jeon, S. Jia, Y. Jin, D. Joffe, K. K. Joo, A. B. Kaliyar, K. H. Kang, G. Karyan, T. Kawasaki, H. Kichimi, C. H. Kim, D. Y. Kim, H. J. Kim, K. T. Kim, S. H. Kim, K. Kinoshita, P. Kodyš, S. Korpar, D. Kotchetkov, P. KriŽan, R. Kroeger, J. F. Krohn, P. Krokovny, T. Kuhr, R. Kumar, Y. J. Kwon, J. S. Lange, I. S. Lee, J. K. Lee, S. C. Lee

    Physical Review Letters   124 ( 16 )   161803   2020年4月

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    掲載種別:研究論文(学術雑誌)  

    © 2020 authors. The experimental results on the ratios of branching fractions R(D)=B(B→Dτ-ντ)/B(B→Dℓ-νℓ) and R(D∗)=B(B→D∗τ-ντ)/B(B→D∗ℓ-νℓ), where ℓ denotes an electron or a muon, show a long-standing discrepancy with the standard model predictions, and might hint at a violation of lepton flavor universality. We report a new simultaneous measurement of R(D) and R(D∗), based on a data sample containing 772×106 BB events recorded at the ϒ(4S) resonance with the Belle detector at the KEKB e+e- collider. In this analysis the tag-side B meson is reconstructed in a semileptonic decay mode and the signal-side τ is reconstructed in a purely leptonic decay. The measured values are R(D)=0.307±0.037±0.016 and R(D∗)=0.283±0.018±0.014, where the first uncertainties are statistical and the second are systematic. These results are in agreement with the standard model predictions within 0.2, 1.1, and 0.8 standard deviations for R(D), R(D∗), and their combination, respectively. This work constitutes the most precise measurements of R(D) and R(D∗) performed to date as well as the first result for R(D) based on a semileptonic tagging method.

    DOI: 10.1103/PhysRevLett.124.161803

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  • Study of B →p p ππ STUDY of B →p p ππ CHU K. et al. 査読

    K. Chu, M. Z. Wang, I. Adachi, H. Aihara, S. Al Said, D. M. Asner, V. Aulchenko, T. Aushev, R. Ayad, V. Babu, I. Badhrees, S. Bahinipati, A. M. Bakich, P. Behera, C. Belenõ, J. Bennett, V. Bhardwaj, B. Bhuyan, J. Biswal, A. Bobrov, G. Bonvicini, A. Bozek, M. Bračko, M. Campajola, L. Cao, D. Červenkov, P. Chang, V. Chekelian, A. Chen, B. G. Cheon, K. Chilikin, H. E. Cho, K. Cho, S. K. Choi, Y. Choi, S. Choudhury, D. Cinabro, S. Cunliffe, N. Dash, F. Di Capua, S. Di Carlo, Z. DoleŽal, T. V. Dong, S. Eidelman, D. Epifanov, J. E. Fast, T. Ferber, A. Frey, B. G. Fulsom, R. Garg, V. Gaur, N. Gabyshev, A. Garmash, A. Giri, P. Goldenzweig, B. Golob, O. Hartbrich, K. Hayasaka, H. Hayashii, W. S. Hou, C. L. Hsu, T. Iijima, K. Inami, A. Ishikawa, R. Itoh, M. Iwasaki, Y. Iwasaki, W. W. Jacobs, H. B. Jeon, Y. Jin, D. Joffe, K. K. Joo, G. Karyan, T. Kawasaki, D. Y. Kim, S. H. Kim, K. Kinoshita, P. Kodyš, S. Korpar, P. KriŽan, R. Kroeger, P. Krokovny, R. Kulasiri, Y. J. Kwon, Y. T. Lai, I. S. Lee, S. C. Lee, L. K. Li, L. Li Gioi, J. Libby, K. Lieret, D. Liventsev, T. Luo, M. Masuda, D. Matvienko, M. Merola, K. Miyabayashi, R. Mizuk, G. B. Mohanty, T. Mori

    Physical Review D   101 ( 5 )   2020年3月

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    掲載種別:研究論文(学術雑誌)  

    © 2020 authors. Using a data sample of 772×106 BB pairs collected on the Ï'(4S) resonance with the Belle detector at the KEKB asymmetric energy e+e-collider, we report the observation of B0→ppπ+π- A nd the first observation of B+→ppπ+π0. We measure a decay branching fraction of (0.83±0.17±0.17)×10-6 in B0→ppπ+π-for Mπ+π-<1.22 GeV/c2 with a significance of 5.5 standard deviations. The contribution from B0→ppK0 is excluded. We measure a decay branching fraction of (4.58±1.17±0.67)×10-6 for B+→ppπ+π0 with Mπ+π0<1.3 GeV/c2 with a significance of 5.4 standard deviations. We study the difference of the Mpp distributions in B0→ppπ+π- A nd B+→ppπ+π0.

    DOI: 10.1103/PhysRevD.101.052012

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  • Measurement of the integrated luminosity of the Phase 2 data of the Belle II experiment 査読

    F. Abudinén, I. Adachi, P. Ahlburg, H. Aihara, N. Akopov, A. Aloisio, F. Ameli, L. Andricek, N. Anh Ky, D. M. Asner, H. Atmacan, T. Aushev, V. Aushev, T. Aziz, K. Azmi, V. Babu, S. Baehr, S. Bahinipati, A. M. Bakich, P. Bambade, Sw Banerjee, S. Bansal, V. Bansal, M. Barrett, J. Baudot, A. Beaulieu, J. Becker, P. K. Behera, J. V. Bennett, E. Bernieri, F. U. Bernlochner, M. Bertemes, M. Bessner, S. Bettarini, V. Bhardwaj, F. Bianchi, T. Bilka, S. Bilokin, D. Biswas, G. Bonvicini, A. Bozek, M. Bračko, P. Branchini, N. Braun, T. E. Browder, A. Budano, S. Bussino, M. Campajola, L. Cao, G. Casarosa, C. Cecchi, D. Červenkov, M. C. Chang, P. Chang, R. Cheaib, V. Chekelian, Y. Q. Chen, Y. T. Chen, B. G. Cheon, K. Chilikin, H. E. Cho, K. Cho, S. Cho, S. K. Choi, S. Choudhury, D. Cinabro, L. Corona, L. M. Cremaldi, S. Cunliffe, T. Czank, F. Dattola, E. De La Cruz-Burelo, G. De Nardo, M. De Nuccio, G. De Pietro, R. De Sangro, M. Destefanis, S. Dey, A. De Yta-Hernandez, F. Di Capua, S. Di Carlo, J. Dingfelder, Z. Doležal, I. Domínguez Jiménez, T. V. Dong, K. Dort, S. Dubey, S. Duell, S. Eidelman, M. Eliachevitch, T. Ferber, D. Ferlewicz, G. Finocchiaro, S. Fiore, A. Fodor, F. Forti, A. Frey, B. G. Fulsom, M. Gabriel, E. Ganiev

    Chinese Physics C   44 ( 2 )   021001-1 - 021001-12   2020年2月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    © 2019 Chinese Physical Society and the Institute of High Energy Physics of the Chinese Academy of Sciences and the Institute of Modern Physics of the Chinese Academy of Sciences and IOP Publishing Ltd. From April to July 2018, a data sample at the peak energy of the γ(4S) resonance was collected with the Belle II detector at the SuperKEKB electron-positron collider. This is the first data sample of the Belle II experiment. Using Bhabha and digamma events, we measure the integrated luminosity of the data sample to be (496.3 ± 0.3 ± 3.0) pb-1, where the first uncertainty is statistical and the second is systematic. This work provides a basis for future luminosity measurements at Belle II.

    DOI: 10.1088/1674-1137/44/2/021001

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  • Update of inclusive cross sections of single and pairs of identified light charged hadrons 査読

    R. Seidl, I. Adachi, H. Aihara, D. M. Asner, V. Aulchenko, T. Aushev, I. Badhrees, P. Behera, K. Belous, J. Bennett, B. Bhuyan, J. Biswal, M. Bračko, T. E. Browder, M. Campajola, L. Cao, D. Červenkov, M. -C. Chang, V. Chekelian, A. Chen, K. Chilikin, K. Cho, Y. Choi, S. Choudhury, D. Cinabro, S. Cunliffe, G. De Nardo, F. Di Capua, S. Eidelman, D. Epifanov, J. E. Fast, T. Ferber, B. G. Fulsom, V. Gaur, A. Garmash, A. Giri, P. Goldenzweig, K. Hayasaka, H. Hayashii, W. -S. Hou, K. Huang, K. Inami, A. Ishikawa, M. Iwasaki, Y. Iwasaki, W. W. Jacobs, S. Jia, Y. Jin, K. K. Joo, G. Karyan, D. Y. Kim, S. H. Kim, P. Kodyš, S. Korpar, P. Križan, R. Kroeger, P. Krokovny, A. Kuzmin, Y. -J. Kwon, S. C. Lee, Y. B. Li, L. Li Gioi, J. Libby, C. MacQueen, M. Masuda, T. Matsuda, D. Matvienko, M. Merola, K. Miyabayashi, R. Mizuk, R. Mussa, M. Nakao, M. Nayak, N. K. Nisar, S. Nishida, K. Nishimura, S. Ogawa, H. Ono, P. Oskin, P. Pakhlov, G. Pakhlova, S. Pardi, S. -H. Park, S. Patra, S. Paul, T. K. Pedlar, L. E. Piilonen, T. Podobnik, V. Popov, E. Prencipe, M. T. Prim, M. Ritter, N. Rout, G. Russo, D. Sahoo, Y. Sakai, S. Sandilya, L. Santelj, T. Sanuki, V. Savinov, O. Schneider, G. Schnell, C. Schwanda, Y. Seino, M. E. Sevior, M. Shapkin, V. Shebalin, J. -G. Shiu, B. Shwartz, E. Solovieva, M. Starič, Z. S. Stottler, M. Sumihama, T. Sumiyoshi, W. Sutcliffe, K. Tanida, F. Tenchini, M. Uchida, T. Uglov, Y. Unno, Y. Usov, R. Van Tonder, G. Varner, V. Vorobyev, A. Vossen, C. H. Wang, M. -Z. Wang, P. Wang, S. Watanuki, E. Won, X. Xu, S. B. Yang, J. Yelton, Z. P. Zhang, V. Zhilich, V. Zhukova

    2020年1月

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    We report new measurements of the production cross sections of pairs of
    charged pions and kaons as a function of their fractional energies using
    various fractional-energy definitions. Two different fractional-energy
    definitions were used and compared to the conventional fractional-energy
    definition reported previously. The new variables aim at either identifying
    dihadron cross sections in terms of single-hadron fragmentation functions, or
    to provide a means of characterizing the transverse momentum created in the
    fragmentation process. The results were obtained applying the updated
    initial-state radiation correction used in other recent Belle publications on
    light-hadron production cross sections. In addition, production cross sections
    of single charged pions, kaons, and protons were also updated using this
    initial-state radiation correction. The cross sections are obtained from a
    $558\,{\rm fb}^{-1}$ data sample collected at the $\Upsilon(4S)$ resonance with
    the Belle detector at the KEKB asymmetric-energy $e^+ e^-$ collider.

    arXiv

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  • Observation of a vector charmoniumlike state in e+e-→ Ds+ Ds1 (2536)-+ c. c. 査読

    S. Jia, C. P. Shen, C. Z. Yuan, X. L. Wang, I. Adachi, H. Aihara, D. M. Asner, H. Atmacan, V. Aulchenko, R. Ayad, V. Babu, I. Badhrees, A. M. Bakich, P. Behera, B. Bhuyan, T. Bilka, J. Biswal, A. Bobrov, G. Bonvicini, A. Bozek, M. Bračko, T. E. Browder, M. Campajola, L. Cao, D. Červenkov, P. Chang, A. Chen, B. G. Cheon, K. Chilikin, H. E. Cho, K. Cho, S. K. Choi, Y. Choi, D. Cinabro, S. Cunliffe, G. De Nardo, F. Di Capua, S. Di Carlo, Z. DoleŽal, T. V. Dong, S. Eidelman, D. Epifanov, J. E. Fast, T. Ferber, B. G. Fulsom, R. Garg, V. Gaur, N. Gabyshev, A. Garmash, A. Giri, P. Goldenzweig, B. Golob, K. Hayasaka, H. Hayashii, W. S. Hou, C. L. Hsu, T. Iijima, K. Inami, G. Inguglia, A. Ishikawa, R. Itoh, M. Iwasaki, Y. Iwasaki, W. W. Jacobs, Y. Jin, K. K. Joo, K. H. Kang, G. Karyan, H. Kichimi, B. H. Kim, C. H. Kim, D. Y. Kim, S. H. Kim, K. Kinoshita, P. Kodyš, S. Korpar, R. Kroeger, P. Krokovny, R. Kulasiri, A. Kuzmin, Y. J. Kwon, K. Lalwani, J. S. Lange, I. S. Lee, S. C. Lee, P. Lewis, C. H. Li, L. K. Li, Y. B. Li, L. Li Gioi, J. Libby, K. Lieret, D. Liventsev, C. MacQueen, M. Masuda, T. Matsuda, D. Matvienko, M. Merola, K. Miyabayashi, H. Miyata

    Physical Review D   100 ( 11 )   2019年12月

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    掲載種別:研究論文(学術雑誌)  

    © 2019 authors. Published by the American Physical Society. Using a data sample of 921.9 fb-1 collected with the Belle detector, we study the process of e+e-→Ds+Ds1(2536)-+c.c. via initial-state radiation. We report the first observation of a vector charmoniumlike state decaying to Ds+Ds1(2536)-+c.c. with a significance of 5.9σ, including systematic uncertainties. The measured mass and width are (4625.9-6.0+6.2(stat)±0.4(syst)) MeV/c2 and (49.8-11.5+13.9(stat)±4.0(syst)) MeV, respectively. The product of the e+e-→Ds+Ds1(2536)-+c.c. cross section and the branching fraction of Ds1(2536)-→D∗0K-is measured from the DsDs1(2536) threshold to 5.59 GeV.

    DOI: 10.1103/PhysRevD.100.111103

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  • Search for an invisibly decaying $Z^{\prime}$ boson at Belle II in $e^+ e^- \to μ^+ μ^- (e^{\pm} μ^{\mp})$ plus missing energy final states 査読

    Belle II Collaboration, I. Adachi, P. Ahlburg, H. Aihara, N. Akopov, A. Aloisio, N. Anh Ky, D. M. Asner, H. Atmacan, T. Aushev, V. Aushev, T. Aziz, V. Babu, S. Baehr, P. Bambade, Sw. Banerjee, V. Bansal, M. Barrett, J. Baudot, J. Becker, P. K. Behera, J. V. Bennett, E. Bernieri, F. U. Bernlochner, M. Bertemes, M. Bessner, S. Bettarini, F. Bianchi, D. Biswas, A. Bozek, M. Bračko, P. Branchini, R. A. Briere, T. E. Browder, A. Budano, L. Burmistrov, S. Bussino, M. Campajola, L. Cao, G. Casarosa, C. Cecchi, D. Červenkov, M. -C. Chang, R. Cheaib, V. Chekelian, Y. Q. Chen, Y. -T. Chen, B. G. Cheon, K. Chilikin, K. Cho, S. Cho, S. -K. Choi, S. Choudhury, D. Cinabro, L. Corona, L. M. Cremaldi, S. Cunliffe, T. Czank, F. Dattola, E. De La Cruz-Burelo, G. De Nardo, M. De Nuccio, G. De Pietro, R. de Sangro, M. Destefanis, S. Dey, A. De Yta-Hernandez, F. Di Capua, Z. Doležal, I. Domínguez Jiménez, T. V. Dong, K. Dort, D. Dossett, S. Dubey, S. Duell, G. Dujany, S. Eidelman, M. Eliachevitch, J. E. Fast, T. Ferber, D. Ferlewicz, G. Finocchiaro, S. Fiore, A. Fodor, F. Forti, B. G. Fulsom, E. Ganiev, M. Garcia-Hernandez, R. Garg, V. Gaur, A. Gaz, A. Gellrich, J. Gemmler, T. Geßler, R. Giordano, A. Giri, B. Gobbo, R. Godang, P. Goldenzweig, B. Golob, P. Gomis, W. Gradl, E. Graziani, D. Greenwald, Y. Guan, C. Hadjivasiliou, S. Halder, T. Hara, O. Hartbrich, K. Hayasaka, H. Hayashii, C. Hearty, M. T. Hedges, I. Heredia de la Cruz, M. Hernández Villanueva, A. Hershenhorn, T. Higuchi, E. C. Hill, M. Hoek, C. -L. Hsu, Y. Hu, T. Iijima, K. Inami, G. Inguglia, J. Irakkathil Jabbar, A. Ishikawa, R. Itoh, Y. Iwasaki, W. W. Jacobs, D. E. Jaffe, E. -J. Jang, H. B. Jeon, S. Jia, Y. Jin, C. Joo, K. K. Joo, J. Kahn, H. Kakuno, A. B. Kaliyar, J. Kandra, G. Karyan, Y. Kato, T. Kawasaki, B. H. Kim, C. -H. Kim, D. Y. Kim, K. -H. Kim, S. -H. Kim, Y. K. Kim, Y. Kim, T. D. Kimmel, H. Kindo, C. Kleinwort, P. Kodyš, T. Koga, S. Kohani, I. Komarov, S. Korpar, N. Kovalchuk, T. M. G. Kraetzschmar, P. Križan, R. Kroeger, P. Krokovny, T. Kuhr, J. Kumar, M. Kumar, R. Kumar, K. Kumara, S. Kurz, A. Kuzmin, Y. -J. Kwon, S. Lacaprara, C. La Licata, L. Lanceri, J. S. Lange, K. Lautenbach, I. -S. Lee, S. C. Lee, P. Leitl, D. Levit, L. K. Li, Y. B. Li, J. Libby, K. Lieret, L. Li Gioi, Z. Liptak, Q. Y. Liu, D. Liventsev, S. Longo, T. Luo, Y. Maeda, M. Maggiora, E. Manoni, S. Marcello, C. Marinas, A. Martini, M. Masuda, T. Matsuda, K. Matsuoka, D. Matvienko, F. Meggendorfer, J. C. Mei, F. Meier, M. Merola, F. Metzner, M. Milesi, C. Miller, K. Miyabayashi, H. Miyake, R. Mizuk, K. Azmi, G. B. Mohanty, T. Moon, T. Morii, H. -G. Moser, F. Mueller, F. J. Müller, Th. Muller, G. Muroyama, R. Mussa, E. Nakano, M. Nakao, M. Nayak, G. Nazaryan, D. Neverov, C. Niebuhr, N. K. Nisar, S. Nishida, K. Nishimura, M. Nishimura, B. Oberhof, K. Ogawa, Y. Onishchuk, H. Ono, Y. Onuki, P. Oskin, H. Ozaki, P. Pakhlov, G. Pakhlova, A. Paladino, A. Panta, E. Paoloni, H. Park, B. Paschen, A. Passeri, A. Pathak, S. Paul, T. K. Pedlar, I. Peruzzi, R. Peschke, R. Pestotnik, M. Piccolo, L. E. Piilonen, V. Popov, C. Praz, E. Prencipe, M. T. Prim, M. V. Purohit, P. Rados, R. Rasheed, S. Reiter, M. Remnev, P. K. Resmi, I. Ripp-Baudot, M. Ritter, G. Rizzo, L. B. Rizzuto, S. H. Robertson, D. Rodríguez Pérez, J. M. Roney, C. Rosenfeld, A. Rostomyan, N. Rout, G. Russo, D. Sahoo, Y. Sakai, S. Sandilya, A. Sangal, L. Santelj, P. Sartori, Y. Sato, V. Savinov, B. Scavino, J. Schueler, C. Schwanda, R. M. Seddon, Y. Seino, A. Selce, K. Senyo, C. Sfienti, C. P. Shen, J. -G. Shiu, B. Shwartz, A. Sibidanov, F. Simon, R. J. Sobie, A. Soffer, A. Sokolov, E. Solovieva, S. Spataro, B. Spruck, M. Starič, S. Stefkova, Z. S. Stottler, R. Stroili, J. Strube, M. Sumihama, T. Sumiyoshi, D. J. Summers, S. Y. Suzuki, M. Tabata, M. Takizawa, U. Tamponi, S. Tanaka, K. Tanida, N. Taniguchi, P. Taras, F. Tenchini, E. Torassa, K. Trabelsi, T. Tsuboyama, M. Uchida, K. Unger, Y. Unno, S. Uno, Y. Ushiroda, S. E. Vahsen, R. van Tonder, G. S. Varner, K. E. Varvell, A. Vinokurova, L. Vitale, A. Vossen, M. Wakai, H. M. Wakeling, W. Wan Abdullah, C. H. Wang, M. -Z. Wang, A. Warburton, M. Watanabe, J. Webb, S. Wehle, C. Wessel, J. Wiechczynski, H. Windel, E. Won, B. Yabsley, S. Yamada, W. Yan, S. B. Yang, H. Ye, J. H. Yin, M. Yonenaga, C. Z. Yuan, Y. Yusa, L. Zani, Z. Zhang, V. Zhilich, Q. D. Zhou, X. Y. Zhou, V. I. Zhukova

    2019年12月

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    Theories beyond the standard model often predict the existence of an
    additional neutral boson, the $Z^{\prime}$. Using data collected by the Belle
    II experiment during 2018 at the SuperKEKB collider, we perform the first
    searches for the invisible decay of a $Z^{\prime}$ in the process $e^+ e^- \to
    \mu^+ \mu^- Z^{\prime}$ and of a lepton-flavor-violating $Z^{\prime}$ in $e^+
    e^- \to e^{\pm} \mu^{\mp} Z^{\prime}$. We do not find any excess of events and
    set 90\% credibility level upper limits on the cross sections of these
    processes. We translate the former, in the framework of an $L_{\mu}-L_{\tau}$
    theory, into upper limits on the $Z^{\prime}$ coupling constant at the level of
    $5 \times 10^{-2}$ -- $1$ $M_{Z^\prime}\leq 6$ GeV/$c^2$.

    arXiv

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  • Measurements of the branching fractions $\mathcal{B}\mathbf{(}{B}^{ { - } }{\rightarrow}{\overline{ { {\Lambda } } } }_{c}^{ { - } }{ { {\Xi } } }_{c}^{ { '}0}\mathbf{)}$, $\mathcal{B}\mathbf{(}{B}^{ { - } }{\rightarrow}{\overline{ { {\Lambda } } } }_{c}^{ { - } }{ { {\Xi } } }_{c}\mathbf{(}2645{)}^{0}\mathbf{)}$ and $\mathcal{B}\mathbf{(}{B}^{ { - } }{\rightarrow}{\overline{ { {\Lambda } } } }_{c}^{ { - } }{ { {\Xi } } }_{c}\mathbf{(}2790{\mathbf{) } }^{0}\mathbf{)}$ 査読 国際共著 国際誌

    The Belle collaboration (K.Hayasaka は 177人中53番目)

    Phys. Rev. D   100 ( 11 )   112010-1 - 112010-8   2019年12月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.1103/PhysRevD.100.112010

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  • Measurements of the Branching Fractions ${\cal B}(B^{-} \to \barΛ_{c}^{-} Ξ_{c}^{'0})$, ${\cal B}(B^{-} \to \barΛ_{c}^{-} Ξ_{c}(2645)^{0})$ and ${\cal B}(B^{-} \to \barΛ_{c}^{-} Ξ_{c}(2790)^{0}) $ 査読

    Belle Collaboration, Y. Li, Y. B. Li, C. P. Shen, I. Adachi, H. Aihara, D. M. Asner, H. Atmacan, V. Aulchenko, R. Ayad, V. Babu, I. Badhrees, A. M. Bakich, P. Behera, T. Bilka, J. Biswal, A. Bobrov, G. Bonvicini, A. Bozek, M. Bračko, T. E. Browder, M. Campajola, L. Cao, D. Červenkov, P. Chang, A. Chen, B. G. Cheon, K. Chilikin, H. E. Cho, K. Cho, S. -K. Choi, Y. Choi, D. Cinabro, S. Cunliffe, G. De Nardo, F. Di Capua, S. Di Carlo, Z. Doležal, T. V. Dong, S. Eidelman, J. E. Fast, T. Ferber, D. Ferlewicz, B. G. Fulsom, R. Garg, V. Gaur, N. Gabyshev, A. Garmash, A. Giri, P. Goldenzweig, B. Golob, B. Grube, T. Hara, K. Hayasaka, H. Hayashii, W. -S. Hou, C. -L. Hsu, T. Iijima, K. Inami, G. Inguglia, A. Ishikawa, R. Itoh, M. Iwasaki, Y. Iwasaki, W. W. Jacobs, S. Jia, Y. Jin, K. K. Joo, K. H. Kang, G. Karyan, H. Kichimi, C. H. Kim, D. Y. Kim, S. H. Kim, K. Kinoshita, P. Kodyš, R. Kroeger, P. Krokovny, T. Kuhr, R. Kulasiri, A. Kuzmin, Y. -J. Kwon, K. Lalwani, J. S. Lange, I. S. Lee, S. C. Lee, P. Lewis, C. H. Li, L. K. Li, L. Li Gioi, J. Libby, K. Lieret, D. Liventsev, C. MacQueen, M. Masuda, T. Matsuda, D. Matvienko, M. Merola, H. Miyata, R. Mizuk, R. Mussa, K. J. Nath, M. Nayak, M. Niiyama, N. K. Nisar, S. Nishida, K. Nishimura, S. Ogawa, H. Ono, Y. Onuki, P. Oskin, P. Pakhlov, G. Pakhlova, T. Pang, S. Pardi, H. Park, S. -H. Park, S. Patra, S. Paul, T. K. Pedlar, R. Pestotnik, L. E. Piilonen, T. Podobnik, V. Popov, E. Prencipe, M. T. Prim, M. Röhrken, A. Rostomyan, N. Rout, G. Russo, D. Sahoo, Y. Sakai, S. Sandilya, L. Santelj, V. Savinov, O. Schneider, G. Schnell, C. Schwanda, Y. Seino, K. Senyo, M. E. Sevior, J. -G. Shiu, B. Shwartz, A. Sokolov, E. Solovieva, S. Stanič, M. Starič, Z. S. Stottler, M. Sumihama, T. Sumiyoshi, W. Sutcliffe, M. Takizawa, K. Tanida, F. Tenchini, K. Trabelsi, M. Uchida, T. Uglov, Y. Unno, S. Uno, R. Van Tonder, G. Varner, A. Vinokurova, C. H. Wang, M. -Z. Wang, X. L. Wang, M. Watanabe, E. Won, S. B. Yang, H. Ye, J. Yelton, J. H. Yin, C. Z. Yuan, Z. P. Zhang, V. Zhilich, V. Zhukova, V. Zhulanov

    2019年11月

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    Using the data sample of 711 fb$^{-1}$ of $\Upsilon(4S)$ on-resonance data
    taken by the Belle detector at the KEKB asymmetric-energy electron-positron
    collider, we present the first measurements of branching fractions of the
    decays $B^{-} \to \bar{\Lambda}_{c}^{-} \Xi_{c}^{'0}$, $B^{-} \to
    \bar{\Lambda}_{c}^{-} \Xi_{c}(2645)^{0}$, and $B^{-} \to \bar{\Lambda}_{c}^{-}
    \Xi_{c}(2790)^{0} $. The signal yields for these decays are extracted from the
    recoil mass spectrum of the system recoiling against $\bar{\Lambda}_{c}^{-}$
    baryons in selected $B^-$ candidates. The branching fraction of $B^{-} \to
    \bar{\Lambda}_{c}^{-} \Xi_{c}(2790)^{0}$ is measured to be $ (1.1 \pm 0.4 \pm
    0.2)\times 10^{-3}$, where the first uncertainty is statistical and the second
    systematic. The 90\% credibility level upper limits on ${\cal B}(B^{-} \to
    \bar{\Lambda}_{c}^{-} \Xi_{c}^{'0})$ and ${\cal B}(B^{-} \to
    \bar{\Lambda}_{c}^{-} \Xi_{c}(2645)^{0})$ are determined to be $6.5\times
    10^{-4}$ and $7.9\times 10^{-4}$, respectively.

    DOI: 10.1103/PhysRevD.100.112010

    arXiv

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  • Azimuthal asymmetries of back-to-back ${\pi}^{\pm}{-}({\pi}^{0},{\eta},{\pi}^{\pm})$ pairs in ${e}^{+}{e}^{ { - } }$ annihilation 査読 国際共著 国際誌

    The Belle collaboration (K.Hayasaka は 133人中39番目)

    Phys. Rev. D   100 ( 9 )   092008-1 - 092008-26   2019年11月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.1103/PhysRevD.100.092008

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  • Observation of τ- →π-ντe+e- and search for τ- →π-ντμ+μ- 査読 国際共著 国際誌

    Y. Jin, H. Aihara, D. Epifanov, I. Adachi, S. Al Said, D. M. Asner, V. Aulchenko, T. Aushev, R. Ayad, V. Babu, I. Badhrees, S. Bahinipati, V. Bansal, P. Behera, M. Berger, V. Bhardwaj, T. Bilka, J. Biswal, A. Bobrov, G. Bonvicini, A. Bozek, M. Bračko, M. Campajola, L. Cao, D. Červenkov, V. Chekelian, A. Chen, B. G. Cheon, K. Chilikin, H. E. Cho, K. Cho, Y. Choi, S. Choudhury, D. Cinabro, S. Cunliffe, S. Di Carlo, Z. DoleŽal, T. V. Dong, D. Dossett, S. Eidelman, J. E. Fast, T. Ferber, B. G. Fulsom, R. Garg, V. Gaur, N. Gabyshev, A. Garmash, A. Giri, P. Goldenzweig, B. Golob, D. Greenwald, O. Grzymkowska, J. Haba, K. Hayasaka, H. Hayashii, M. T. Hedges, W. S. Hou, K. Huang, T. Iijima, K. Inami, G. Inguglia, A. Ishikawa, M. Iwasaki, Y. Iwasaki, W. W. Jacobs, H. B. Jeon, S. Jia, D. Joffe, K. K. Joo, J. Kahn, A. B. Kaliyar, G. Karyan, T. Kawasaki, H. Kichimi, C. Kiesling, D. Y. Kim, H. J. Kim, K. T. Kim, S. H. Kim, K. Kinoshita, P. Kodyš, S. Korpar, D. Kotchetkov, P. KriŽan, R. Kroeger, P. Krokovny, R. Kulasiri, R. Kumar, A. Kuzmin, Y. J. Kwon, K. Lalwani, J. S. Lange, J. Y. Lee, S. C. Lee, C. H. Li, L. K. Li, Y. B. Li, L. Li Gioi, J. Libby, K. Lieret

    Physical Review D   100 ( 7 )   071101-1 - 071101-9   2019年10月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    © 2019 authors. Published by the American Physical Society. We present the first measurements of branching fractions of rare tau-lepton decays, τ-→π-ντ+- (=e or μ), using a data sample corresponding to 562 fb-1 collected at a center-of-mass energy of 10.58 GeV with the Belle detector at the KEKB asymmetric-energy e+e- collider. The τ-→π-ντe+e- decay is observed for the first time with 7.0σ significance. The partial branching fraction determined by the structure-dependent mechanisms mediated by either a vector or an axial-vector current for the mass region Mπee>1.05 GeV/c2 is measured to be B(τ-→π-ντe+e-)[Mπ-e+e->1.05 GeV/c2]=(5.90±0.53±0.85±0.11)×10-6, where the first uncertainty is statistical, the second is systematic, and the third is due to model dependence. In the full phase space, due to the different detection efficiencies for the structure-dependent mechanisms mediated by axial-vector and vector currents, the branching fraction varies from BA(τ-→π-ντe+e-)=(1.46±0.13±0.21)×10-5 to BV(τ-→π-ντe+e-)=(3.01±0.27±0.43)×10-5, respectively. An upper limit is set on the branching fraction of the τ-→π-ντμ+μ- decay, B(τ-→π-ντμ+μ-)<1.14×10-5, at the 90% confidence level.

    DOI: 10.1103/PhysRevD.100.071101

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  • Observation of a new structure near 10.75 GeV in the energy dependence of the e <sup>+</sup> e <sup>−</sup> → ϒ (nS)π <sup>+</sup> π <sup>−</sup> (n = 1, 2, 3) cross sections 査読

    Mizuk R, Bondar A, Adachi I, Aihara H, Asner D.M, Aulchenko V, Aushev T, Ayad R, Badhrees I, Bahinipati S, Bakich A.M, Behera P, Bele{\~n}o C, Berger M, Bhardwaj V, Bilka T, Biswal J, Bozek A, Bra?ko M, Browder T.E, Campajola M, Cao L, ?ervenkov D, Chen A, Cheon B.G, Chilikin K, Cho H.E, Cho K, Choi S.-K, Choi Y, Cinabro D, Cunliffe S, Dash N, De Nardo G, Di Capua F, Di Carlo S, Dole?al Z, Dong T.V, Eidelman S, Epifanov D, Fast J.E, Ferber T, Fulsom B.G, Gaur V, Garmash A, Giri A, Goldenzweig P, Golob B, Grzymkowska O, Hara T, Hartbrich O, Hayasaka K, Hayashii H, Hou W.-S, Iijima T, Inami K, Inguglia G, Ishikawa A, Itoh R, Iwasaki M, Iwasaki Y, Jacobs W.W, Jin Y, Joffe D, Joo K.K, Kang K.H, Karyan G, Kawasaki T, Kichimi H, Kim D.Y, Kim H.J, Kim K.T, Kim S.H, Kinoshita K, Kody? P, Korpar S, Kotchetkov D, Kri?an P, Kroeger R, Krokovny P, Kuhr T, Kumar R, Kuzmin A, Lange J.S, Lee J.Y, Lee S.C, Li L.K, Gioi L.L, Libby J, Lieret K, Liventsev D, Luo T, MacNaughton J, MacQueen C, Masuda M, Matsuda T, Matvienko D, Merola M, Miyata H, Mohanty G.B, Mori T, Mussa R, Nakano T, Nakao M, Nath K.J, Natkaniec Z, Nayak M, Niiyama M, Nisar N.K, Nishida S, Nishimura K, Ogawa S, Olsen S.L, Ono H, Onuki Y, Oskin P, Ostrowicz W, Pakhlov P, Pakhlova G, Pal B, Pang T, Pardi S, Park S.-H, Paul S, Pedlar T.K, Pestotnik R, Piilonen L.E, Popov V, Prencipe E, Ritter M, Rostomyan A, Russo G, Sakai Y, Salehi M, Sandilya S, Sanuki T, Savinov V, Schneider O, Schnell G, Schueler J, Schwanda C, Seino Y, Senyo K, Seon O, Sevior M.E, Shebalin V, Shen C.P, Shiu J.-G, Shwartz B, Sokolov A, Solovieva E, Stari? M, Strube J.F, Sumihama M, Sumiyoshi T, Sutcliffe W, Takizawa M, Tamponi U, Tanida K, Tenchini F, Trabelsi K, Uglov T, Unno Y, Uno S, Urquijo P, Usov Y, Vahsen S.E, Van Tonder R, Varner G, Vinokurova A, Wang B, Wang C.H, Wang M.-Z, Wang P, Won E, Yang S.B, Ye H, Yuan C.Z, Yusa Y, Zhang Z.P, Zhilich V, Zhukova V

    Journal of High Energy Physics   2019 ( 10 )   2019年10月

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    掲載種別:研究論文(学術雑誌)  

    DOI: 10.1007/JHEP10(2019)220

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  • First measurement of the CKM angle ϕ <inf>3</inf> withS B <sup>±</sup> → D(KS0 π <sup>+</sup> π <sup> −</sup> π <sup>0</sup>) K <sup>±</sup> decays 査読

    P. K. Resmi, J. Libby, K. Trabelsi, et. al, Belle Collaboation

    Journal of High Energy Physics   2019 ( 10 )   2019年10月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    © 2019, The Author(s). We present the first model-independent measurement of the CKM unitarity triangle angle ϕ3 using B±→ D(KS0π+π−π0) K± decays, where D indicates either a D0 or D¯ 0 meson. Measurements of the strong-phase difference of the D →KS0π+π−π0 amplitude obtained from CLEO-c data are used as input. This analysis is based on the full Belle data set of 772 × 106BB¯ events collected at the Υ(4S) resonance. We obtain ϕ3 = (5.7−8.8+10.2±3.5±5.7)° and the suppressed amplitude ratio rB = 0.323±0.147±0.023±0.051. Here the first uncertainty is statistical, the second is the experimental systematic, and the third is due to the precision of the strong-phase parameters measured from CLEO-c data. The 95% confidence interval on ϕ3 is (−29.7, 109.5)°, which is consistent with the current world average. [Figure not available: see fulltext.]

    DOI: 10.1007/JHEP10(2019)178

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  • Measurement of the CKM matrix element |Vcb | from B0 →d∗-ℓ+νℓ at Belle 査読

    E. Waheed, P. Urquijo, D. Ferlewicz, et. al, Belle Collaboation

    Physical Review D   100 ( 5 )   2019年9月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    © 2019 authors. Published by the American Physical Society. We present a new measurement of the Cabibbo-Kobayashi-Maskawa matrix element |Vcb| from B0→D∗-ℓ+νℓ decays, reconstructed with the full Belle data set of 711 fb-1 integrated luminosity. Two form factor parametrizations, originally conceived by the Caprini-Lellouch-Neubert (CLN) and the Boyd, Grinstein and Lebed (BGL) groups, are used to extract the product F(1)ηEW|Vcb| and the decay form factors, where F(1) is the normalization factor and ηEW is a small electroweak correction. In the CLN parametrization we find F(1)ηEW|Vcb|=(35.06±0.15±0.56)×10-3, ρ2=1.106±0.031±0.007, R1(1)=1.229±0.028±0.009, R2(1)=0.852±0.021±0.006. For the BGL parametrization we obtain F(1)ηEW|Vcb|=(34.93±0.23±0.59)×10-3, which is consistent with the world average when correcting for F(1)ηEW. The branching fraction of B0→D∗-ℓ+νℓ is measured to be B(B0→D∗-ℓ+νℓ)=(4.90±0.02±0.16)%. We also present a new test of lepton flavor universality violation in semileptonic B decays, B(B0→D∗-e+ν)B(B0→D∗-μ+ν)=1.01±0.01±0.03. The errors quoted correspond to the statistical and systematic uncertainties, respectively. This is the most precise measurement of F(1)ηEW|Vcb| and form factors to date and the first experimental study of the BGL form factor parametrization in an experimental measurement.

    DOI: 10.1103/PhysRevD.100.052007

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  • Search for ω (2012) →k Ξ (1530) →kπ Ξ at Belle 査読 国際共著 国際誌

    S. Jia, C. P. Shen, I. Adachi, J. K. Ahn, H. Aihara, S. Al Said, D. M. Asner, T. Aushev, R. Ayad, V. Babu, S. Bahinipati, A. M. Bakich, P. Behera, C. Beleño, J. Bennett, M. Berger, V. Bhardwaj, T. Bilka, J. Biswal, A. Bobrov, A. Bozek, M. Bračko, T. E. Browder, M. Campajola, L. Cao, D. Červenkov, V. Chekelian, A. Chen, B. G. Cheon, K. Chilikin, H. E. Cho, K. Cho, S. K. Choi, Y. Choi, S. Choudhury, D. Cinabro, S. Cunliffe, N. Dash, G. De Nardo, F. Di Capua, S. Di Carlo, Z. DoleŽal, T. V. Dong, S. Eidelman, D. Epifanov, J. E. Fast, B. G. Fulsom, V. Gaur, N. Gabyshev, A. Garmash, A. Giri, P. Goldenzweig, B. Golob, O. Grzymkowska, O. Hartbrich, K. Hayasaka, H. Hayashii, W. S. Hou, K. Huang, T. Iijima, K. Inami, G. Inguglia, A. Ishikawa, R. Itoh, M. Iwasaki, Y. Iwasaki, W. W. Jacobs, Y. Jin, D. Joffe, K. K. Joo, A. B. Kaliyar, K. H. Kang, G. Karyan, Y. Kato, T. Kawasaki, H. Kichimi, D. Y. Kim, H. J. Kim, K. T. Kim, S. H. Kim, K. Kinoshita, P. Kodyš, S. Korpar, D. Kotchetkov, P. KriŽan, R. Kroeger, P. Krokovny, R. Kumar, A. Kuzmin, Y. J. Kwon, J. S. Lange, I. S. Lee, J. K. Lee, J. Y. Lee, S. C. Lee, L. K. Li, Y. B. Li, L. Li Gioi, J. Libby, K. Lieret

    Physical Review D   100 ( 3 )   032006-1 - 032006-11   2019年8月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    © 2019 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the https://creativecommons.org/licenses/by/4.0/ Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Funded by SCOAP 3 . Using data samples of e+e- collisions collected at the I(1S), I(2S), and I(3S) resonances with the Belle detector, we search for the three-body decay of the ω(2012) baryon to KπΞ. This decay is predicted to dominate for models describing the ω(2012) as a KΞ(1530) molecule. No significant ω(2012) signals are observed in the studied channels, and 90% credibility level upper limits on the ratios of the branching fractions relative to KΞ decay modes are obtained.

    DOI: 10.1103/PhysRevD.100.032006

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  • First measurements of absolute branching fractions of the Ξc+ baryon at Belle 査読 国際共著 国際誌

    Y. B. Li, C. P. Shen, I. Adachi, J. K. Ahn, H. Aihara, S. Al Said, D. M. Asner, H. Atmacan, T. Aushev, R. Ayad, V. Babu, A. M. Bakich, Y. Ban, V. Bansal, P. Behera, C. Beleño, M. Berger, V. Bhardwaj, B. Bhuyan, T. Bilka, J. Biswal, A. Bobrov, A. Bozek, M. Bračko, T. E. Browder, M. Campajola, L. Cao, D. Červenkov, V. Chekelian, A. Chen, B. G. Cheon, K. Chilikin, H. E. Cho, K. Cho, Y. Choi, S. Choudhury, D. Cinabro, S. Cunliffe, S. Di Carlo, Z. DoleŽal, D. Dossett, S. Eidelman, D. Epifanov, J. E. Fast, T. Ferber, B. G. Fulsom, R. Garg, V. Gaur, N. Gabyshev, A. Garmash, A. Giri, P. Goldenzweig, B. Grube, O. Grzymkowska, J. Haba, T. Hara, K. Hayasaka, H. Hayashii, W. S. Hou, T. Iijima, K. Inami, G. Inguglia, A. Ishikawa, M. Iwasaki, Y. Iwasaki, W. W. Jacobs, S. Jia, Y. Jin, D. Joffe, K. K. Joo, A. B. Kaliyar, G. Karyan, Y. Kato, T. Kawasaki, H. Kichimi, C. H. Kim, D. Y. Kim, H. J. Kim, K. T. Kim, S. H. Kim, K. Kinoshita, P. Kodyš, S. Korpar, D. Kotchetkov, P. KriŽan, R. Kroeger, P. Krokovny, T. Kuhr, R. Kulasiri, A. Kuzmin, Y. J. Kwon, K. Lalwani, J. S. Lange, I. S. Lee, J. K. Lee, J. Y. Lee, S. C. Lee, C. H. Li, L. K. Li, L. Li Gioi

    Physical Review D   100 ( 3 )   031101-1 - 031101-8   2019年8月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    © 2019 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the https://creativecommons.org/licenses/by/4.0/ Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Funded by SCOAP 3 . We present the first measurements of the absolute branching fractions of Ξc+ decays into Ξ-π+π+ and pK-π+ final states. Our analysis is based on a data set of (772±11)×106 BB̄ pairs collected at the (4S) resonance with the Belle detector at the KEKB e+e- collider. We measure the absolute branching fraction of B̄0→Λ̄c-Ξc+ with the Ξc+ recoiling against Λ̄c- in B̄0 decays resulting in B(B̄0→Λ̄c-Ξc+)=[1.16±0.42(stat.)±0.15(syst.)]×10-3. We then measure the product branching fractions B(B̄0→Λ̄c-Ξc+)B(Ξc+→Ξ-π+π+) and B(B̄0→Λ̄c-Ξc+)B(Ξc+→pK-π+). Dividing these product branching fractions by B̄0→Λ̄c-Ξc+ yields B(Ξc+→Ξ-π+π+)=[2.86±1.21(stat.)±0.38(syst.)]% and B(Ξc+→pK-π+)=[0.45±0.21(stat.)±0.07(syst.)]%. Our result for B(Ξc+→Ξ-π+π+) can be combined with Ξc+ branching fractions measured relative to Ξc+→Ξ-π+π+ to set the absolute scale for many Ξc+ branching fractions.

    DOI: 10.1103/PhysRevD.100.031101

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  • Search for B0 →x (3872)γ 査読 国際共著 国際誌

    P. C. Chou, P. Chang, I. Adachi, H. Aihara, S. Al Said, D. M. Asner, H. Atmacan, V. Aulchenko, T. Aushev, R. Ayad, V. Babu, I. Badhrees, A. M. Bakich, P. Behera, J. Bennett, M. Berger, B. Bhuyan, T. Bilka, J. Biswal, A. Bobrov, A. Bozek, M. Bračko, T. E. Browder, M. Campajola, L. Cao, D. Červenkov, V. Chekelian, A. Chen, B. G. Cheon, K. Chilikin, H. E. Cho, K. Cho, S. K. Choi, Y. Choi, S. Choudhury, D. Cinabro, S. Cunliffe, N. Dash, S. Di Carlo, Z. DoleŽal, T. V. Dong, S. Eidelman, D. Epifanov, J. E. Fast, T. Ferber, B. G. Fulsom, R. Garg, V. Gaur, N. Gabyshev, A. Garmash, A. Giri, P. Goldenzweig, O. Grzymkowska, J. Haba, O. Hartbrich, K. Hayasaka, H. Hayashii, W. S. Hou, C. L. Hsu, T. Iijima, K. Inami, G. Inguglia, A. Ishikawa, R. Itoh, M. Iwasaki, Y. Iwasaki, W. W. Jacobs, S. Jia, Y. Jin, D. Joffe, K. K. Joo, A. B. Kaliyar, Y. Kato, T. Kawasaki, H. Kichimi, C. Kiesling, D. Y. Kim, S. H. Kim, K. Kinoshita, P. Kodyš, S. Korpar, D. Kotchetkov, P. KriŽan, R. Kroeger, P. Krokovny, R. Kulasiri, R. Kumar, T. Kumita, A. Kuzmin, Y. J. Kwon, Y. T. Lai, J. S. Lange, J. K. Lee, J. Y. Lee, S. C. Lee, C. H. Li, Y. B. Li, L. Li Gioi, J. Libby, K. Lieret

    Physical Review D   100 ( 1 )   012002-1 - 012002-8   2019年7月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    © 2019 authors. Published by the American Physical Society. We report the results of a search for the decay B0→X(3872)(→J/ψπ+π-)γ. The analysis is performed on a data sample corresponding to an integrated luminosity of 711 fb-1 and containing 772×106BB pairs, collected with the Belle detector at the KEKB asymmetric-energy e+e- collider running at the (4S) resonance energy. We find no evidence for a signal and place an upper limit of B(B0→X(3872)γ)×B(X(3872)→J/ψπ+π-)<5.1×10-7 at 90% confidence level.

    DOI: 10.1103/PhysRevD.100.012002

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  • Measurement of branching fraction and final-state asymmetry for the ${\overline{B } }^{0}{\rightarrow}{K}_{S}^{0}{K}^{ { \mp } }{ { \pi } }^{\pm}$ decay 査読

    The Belle collaboration, K, Hayasaka は

    Phys. Rev. D   100 ( 1 )   011101-1 - 011101-9   2019年7月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.1103/PhysRevD.100.011101

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  • Evidence for ${B}^{+}{\rightarrow}{h}_{c}{K}^{+}$ and observation of ${ { \eta } }_{c}(2S){\rightarrow}p\overline{p}{ { \pi } }^{+}{ { \pi } }^{ { - } }$ 査読

    The Belle collaboration, K, Hayasaka は

    Phys. Rev. D   100 ( 1 )   012001-1 - 012001-16   2019年7月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.1103/PhysRevD.100.012001

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  • Transverse momentum dependent production cross sections of charged pions, kaons and protons produced in inclusive e+e- annihilation at s =10.58 GeV 査読

    R. Seidl, I. Adachi, J. K. Ahn, H. Aihara, D. M. Asner, V. Aulchenko, T. Aushev, R. Ayad, A. M. Bakich, V. Bansal, P. Behera, C. Beleño, M. Berger, V. Bhardwaj, T. Bilka, J. Biswal, A. Bobrov, A. Bozek, M. Bračko, L. Cao, D. Červenkov, A. Chen, B. G. Cheon, K. Chilikin, H. E. Cho, K. Cho, Y. Choi, S. Choudhury, D. Cinabro, S. Cunliffe, S. Di Carlo, Z. DoleŽal, T. V. Dong, Z. Drásal, S. Eidelman, D. Epifanov, J. E. Fast, T. Ferber, B. G. Fulsom, R. Garg, V. Gaur, N. Gabyshev, A. Garmash, M. Gelb, A. Giri, P. Goldenzweig, B. Golob, O. Grzymkowska, K. Hayasaka, H. Hayashii, W. S. Hou, T. Iijima, K. Inami, A. Ishikawa, R. Itoh, M. Iwasaki, Y. Iwasaki, W. W. Jacobs, S. Jia, Y. Jin, D. Joffe, K. K. Joo, T. Julius, A. B. Kaliyar, T. Kawasaki, H. Kichimi, C. Kiesling, C. H. Kim, D. Y. Kim, H. J. Kim, J. B. Kim, S. H. Kim, P. Kodyš, S. Korpar, D. Kotchetkov, P. KriŽan, R. Kroeger, P. Krokovny, T. Kuhr, R. Kulasiri, A. Kuzmin, Y. J. Kwon, K. Lalwani, J. S. Lange, I. S. Lee, J. K. Lee, J. Y. Lee, S. C. Lee, D. Levit, C. H. Li, L. K. Li, Y. B. Li, L. Li Gioi, J. Libby, D. Liventsev, M. Lubej, T. Luo, J. Macnaughton, M. Masuda, T. Matsuda

    Physical Review D   99 ( 11 )   112006-1 - 112006-15   2019年6月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    © 2019 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the »https://creativecommons.org/licenses/by/4.0/» Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. We report measurements of the production cross sections of charged pions, kaons, and protons as a function of fractional energy, the event-shape variable called thrust, and the transverse momentum with respect to the thrust axis. These measurements access the transverse momenta created in the fragmentation process, which are of critical importance to the understanding of any transverse-momentum-dependent distribution and fragmentation functions. The low transverse-momentum part of the cross sections can be well described by Gaussians in transverse momentum as is generally assumed but the fractional-energy dependence is nontrivial and different hadron types have varying Gaussian widths. The width of these Gaussians decreases with thrust and shows an initially rising, then decreasing fractional-energy dependence. The widths for pions and kaons are comparable within uncertainties, while those for protons are significantly narrower. These single-hadron cross sections and Gaussian widths are obtained from a 558 fb-1 data sample collected at the (4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider.

    DOI: 10.1103/PhysRevD.99.112006

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  • Search for $X(3872)$ and $X(3915)$ decay into ${ { \chi } }_{c1}{ { \pi } }^{0}$ in $B$ decays at Belle 査読

    The Belle collaboration, K, Hayasaka は

    Phys. Rev. D   99 ( 11 )   111101-1 - 111101-8   2019年6月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.1103/PhysRevD.99.111101

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  • A new approach for measuring the muon anomalous magnetic moment and electric dipole moment 査読

    M. Abe, S. Bae, G. Beer, G. Bunce, H. Choi, S. Choi, M. Chung, W. Da Silva, S. Eidelman, M. Finger, Y. Fukao, T. Fukuyama, S. Haciomeroglu, K. Hasegawa, K. Hayasaka, N. Hayashizaki, H. Hisamatsu, T. Iijima, H. Iinuma, H. Ikeda, M. Ikeno, K. Inami, K. Ishida, T. Itahashi, M. Iwasaki, Y. Iwashita, Y. Iwata, R. Kadono, S. Kamal, T. Kamitani, S. Kanda, F. Kapusta, K. Kawagoe, N. Kawamura, B. Kim, Y. Kim, T. Kishishita, R. Kitamura, H. Ko, T. Kohriki, Y. Kondo, T. Kume, M. J. Lee, S. Lee, W. Lee, G. M. Marshall, Y. Matsuda, T. Mibe, Y. Miyake, T. Murakami, K. Nagamine, H. Nakayama, S. Nishimura, D. Nomura, T. Ogitsu, S. Ohsawa, K. Oide, Y. Oishi, S. Okada, A. Olin, Z. Omarov, M. Otani, G. Razuvaev, A. Rehman, N. Saito, N. F. Saito, K. Sasaki, O. Sasaki, N. Sato, Y. Sato, Y. K. Semertzidis, H. Sendai, Y. Shatunov, K. Shimomura, M. Shoji, B. Shwartz, P. Strasser, Y. Sue, T. Suehara, C. Sung, K. Suzuki, T. Takatomi, M. Tanaka, J. Tojo, Y. Tsutsumi, T. Uchida, K. Ueno, S. Wada, E. Won, H. Yamaguchi, T. Yamanaka, A. Yamamoto, T. Yamazaki, H. Yasuda, M. Yoshida, T. Yoshioka

    Progress of Theoretical and Experimental Physics   2019 ( 5 )   2019年5月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    © 2019 The Author(s). This paper introduces a new approach to measure the muon magnetic moment anomaly aμ = (g - 2)/2 and the muon electric dipole moment (EDM) dμ at the J-PARC muon facility. The goal of our experiment is to measure aμ and dμ using an independent method with a factor of 10 lower muon momentum, and a factor of 20 smaller diameter storage-ring solenoid compared with previous and ongoing muon g - 2 experiments with unprecedented quality of the storage magnetic field. Additional significant differences from the present experimental method include a factor of 1000 smaller transverse emittance of the muon beam (reaccelerated thermal muon beam), its efficient vertical injection into the solenoid, and tracking each decay positron from muon decay to obtain its momentum vector. The precision goal for aμ is a statistical uncertainty of 450 parts per billion (ppb), similar to the present experimental uncertainty, and a systematic uncertainty less than 70 ppb. The goal for EDM is a sensitivity of 1.5 × 10-21 ecm.

    DOI: 10.1093/ptep/ptz030

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  • Evidence for the decay ${B}^{0}{\rightarrow}p\overline{p}{ { \pi } }^{0}$ 査読

    The Belle collaboration, K, Hayasaka は

    Phys. Rev. D   99 ( 9 )   091104-1 - 091104-8   2019年5月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.1103/PhysRevD.99.091104

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  • Search for the B →y (4260)K, y (4260) →j /ψπ+π- decays 査読

    R. Garg, V. Bhardwaj, J. B. Singh, I. Adachi, J. K. Ahn, H. Aihara, S. Al Said, D. M. Asner, V. Aulchenko, T. Aushev, R. Ayad, V. Babu, S. Bahinipati, V. Bansal, C. Beleño, T. Bilka, J. Biswal, A. Bobrov, A. Bozek, M. Bračko, L. Cao, D. Červenkov, A. Chen, B. G. Cheon, K. Chilikin, H. E. Cho, K. Cho, S. K. Choi, Y. Choi, D. Cinabro, S. Cunliffe, N. Dash, S. Di Carlo, Z. DoleŽal, T. V. Dong, Z. Drásal, S. Eidelman, J. E. Fast, B. G. Fulsom, V. Gaur, N. Gabyshev, A. Garmash, A. Giri, B. Golob, O. Grzymkowska, J. Haba, K. Hayasaka, H. Hayashii, W. S. Hou, C. L. Hsu, K. Inami, G. Inguglia, A. Ishikawa, R. Itoh, M. Iwasaki, Y. Iwasaki, W. W. Jacobs, H. B. Jeon, S. Jia, Y. Jin, D. Joffe, K. K. Joo, T. Julius, A. B. Kaliyar, T. Kawasaki, H. Kichimi, D. Y. Kim, J. B. Kim, S. H. Kim, K. Kinoshita, P. Kodyš, S. Korpar, D. Kotchetkov, P. KriŽan, R. Kroeger, P. Krokovny, T. Kuhr, R. Kumar, Y. J. Kwon, J. S. Lange, J. K. Lee, S. C. Lee, C. H. Li, L. K. Li, Y. B. Li, L. Li Gioi, J. Libby, D. Liventsev, P. C. Lu, T. Luo, J. Macnaughton, M. Masuda, T. Matsuda, D. Matvienko, M. Merola, K. Miyabayashi, H. Miyata, R. Mizuk, G. B. Mohanty, T. Mori

    Physical Review D   99 ( 7 )   071102-1 - 071102-8   2019年4月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    © 2019 authors. We report the results of a search for the B→Y(4260)K, Y(4260)→J/ψπ+π- decays. This study is based on a data sample corresponding to an integrated luminosity of 711 fb-1, collected at the (4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. We investigate the J/ψπ+π- invariant mass distribution in the range 4.0 to 4.6 GeV/c2 using both B+→J/ψπ+π-K+ and B0→J/ψπ+π-KS0 decays. We find excesses of events above the background levels, with significances of 2.1 and 0.9 standard deviations for charged and neutral B→Y(4260)K decays, respectively, taking into account the systematic uncertainties. These correspond to upper limits on the product of branching fractions, B(B+→Y(4260)K+)×B(Y(4260)→J/ψπ+π-)<1.4×10-5 and B(B0→Y(4260)K0)×B(Y(4260)→J/ψπ+π-)<1.7×10-5 at the 90% confidence level.

    DOI: 10.1103/PhysRevD.99.071102

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  • First measurements of absolute branching fractions of the Ξc <inf>0</inf> Baryon at Belle 査読

    Y. B. Li, C. P. Shen, C. Z. Yuan, I. Adachi, H. Aihara, S. Al Said, D. M. Asner, T. Aushev, R. Ayad, I. Badhrees, Y. Ban, V. Bansal, C. Belenõ, M. Berger, V. Bhardwaj, B. Bhuyan, T. Bilka, J. Biswal, A. Bondar, A. Bozek, M. Bračko, L. Cao, D. Červenkov, A. Chen, B. G. Cheon, K. Chilikin, K. Cho, S. K. Choi, Y. Choi, D. Cinabro, S. Cunliffe, S. Di Carlo, Z. DoleŽal, T. V. Dong, Z. Drásal, S. Eidelman, J. E. Fast, B. G. Fulsom, R. Garg, V. Gaur, N. Gabyshev, A. Garmash, A. Giri, P. Goldenzweig, D. Greenwald, B. Grube, K. Hayasaka, H. Hayashii, C. L. Hsu, T. Iijima, K. Inami, G. Inguglia, A. Ishikawa, R. Itoh, M. Iwasaki, Y. Iwasaki, W. W. Jacobs, S. Jia, Y. Jin, D. Joffe, K. K. Joo, G. Karyan, T. Kawasaki, H. Kichimi, D. Y. Kim, H. J. Kim, J. B. Kim, K. T. Kim, S. H. Kim, K. Kinoshita, P. Kodyš, S. Korpar, D. Kotchetkov, P. KriŽan, R. Kroeger, P. Krokovny, T. Kumita, A. Kuzmin, Y. J. Kwon, J. Y. Lee, S. C. Lee, L. K. Li, L. Li Gioi, J. Libby, D. Liventsev, M. Lubej, J. Macnaughton, M. Masuda, T. Matsuda, M. Merola, K. Miyabayashi, H. Miyata, R. Mizuk, G. B. Mohanty, R. Mussa, E. Nakano, M. Nakao, K. J. Nath, M. Nayak, M. Niiyama

    Physical Review Letters   122 ( 8 )   082001-1 - 082001-7   2019年2月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    © 2019 Authors. Published by the American Physical Society. We present the first measurements of absolute branching fractions of Ξc 0 decays into Ξ-π+, ΛK-π+, and pK-K-π+ final states. The measurements are made using a dataset comprising (772±11)×106 BB̄ pairs collected at the (4S) resonance with the Belle detector at the KEKB e+e-collider. We first measure the absolute branching fraction for B-→Λ̄c-Ξc 0 using a missing-mass technique; the result is B(B-→Λ̄c-Ξc 0 )=(9.51±2.10±0.88)×10-4. We subsequently measure the product branching fractions B(B-→Λ̄c-Ξc 0 )B(Ξc 0 →Ξ-π+), B(B-→Λ̄c-Ξc 0 )B(Ξc 0 →ΛK-π+), and B(B-→Λ̄c-Ξc 0 )B(Ξc 0 →pK-K-π+) with improved precision. Dividing these product branching fractions by the result for B-→Λ̄c-Ξc 0 yields the following branching fractions: B(Ξc 0 →Ξ-π+)=(1.80±0.50±0.14)%, B(Ξc 0 →ΛK-π+)=(1.17±0.37±0.09)%, and B(Ξc 0 →pK-K-π+)=(0.58±0.23±0.05)%. For the above branching fractions, the first uncertainties are statistical and the second are systematic. Our result for B(Ξc 0 →Ξ-π+) can be combined with Ξc 0 branching fractions measured relative to Ξc 0 →Ξ-π+ to yield other absolute Ξc 0 branching fractions.

    DOI: 10.1103/PhysRevLett.122.082001

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  • Observation of Ξ (1620)0 and Evidence for Ξ (1690)0 in Ξc+ → Ξ-π+π+ Decays 査読

    M. Sumihama, I. Adachi, J. K. Ahn, H. Aihara, S. Al Said, D. M. Asner, H. Atmacan, T. Aushev, R. Ayad, V. Babu, I. Badhrees, S. Bahinipati, A. M. Bakich, V. Bansal, C. Beleño, M. Berger, V. Bhardwaj, B. Bhuyan, T. Bilka, J. Biswal, G. Bonvicini, A. Bozek, M. Bračko, T. E. Browder, D. Červenkov, V. Chekelian, A. Chen, B. G. Cheon, K. Chilikin, K. Cho, S. K. Choi, Y. Choi, S. Choudhury, D. Cinabro, S. Cunliffe, T. Czank, N. Dash, S. Di Carlo, Z. DoleŽal, T. V. Dong, Z. Drásal, S. Eidelman, D. Epifanov, J. E. Fast, B. G. Fulsom, R. Garg, V. Gaur, N. Gabyshev, A. Garmash, M. Gelb, A. Giri, P. Goldenzweig, E. Guido, J. Haba, K. Hayasaka, H. Hayashii, S. Hirose, W. S. Hou, K. Inami, G. Inguglia, A. Ishikawa, R. Itoh, M. Iwasaki, Y. Iwasaki, W. W. Jacobs, H. B. Jeon, S. Jia, Y. Jin, K. K. Joo, T. Julius, A. B. Kaliyar, K. H. Kang, G. Karyan, Y. Kato, C. Kiesling, D. Y. Kim, J. B. Kim, K. T. Kim, S. H. Kim, K. Kinoshita, P. Kodyš, S. Korpar, D. Kotchetkov, P. KriŽan, R. Kroeger, P. Krokovny, R. Kumar, A. Kuzmin, Y. J. Kwon, J. S. Lange, I. S. Lee, S. C. Lee, L. K. Li, Y. B. Li, L. Li Gioi, J. Libby, D. Liventsev, M. Lubej, T. Luo, M. Masuda

    Physical Review Letters   122 ( 7 )   072501-1 - 072501-7   2019年2月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    © 2019 authors. Published by the American Physical Society. We report the first observation of the double strange baryon Ξ(1620)0 in its decay to Ξ-π+ via Ξc+→Ξ-π+π+ decays based on a 980 fb-1 data sample collected with the Belle detector at the KEKB asymmetric-energy e+e- collider. The mass and width are measured to be 1610.4±6.0(stat)-4.2+6.1 (syst) MeV/c2 and 59.9±4.8(stat)-7.1+2.8(syst) MeV, respectively. We obtain 4.0σ evidence of the Ξ(1690)0 with the same data sample. These results shed light on the structure of hyperon resonances with strangeness S=-2.

    DOI: 10.1103/PhysRevLett.122.072501

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  • Observation of B+ →p Λ ̄ K+K- and B+ → p ̄ Λk+K+ OBSERVATION of ... P.-C. LU et al. 査読

    P. C. Lu, M. Z. Wang, R. Chistov, P. Chang, I. Adachi, J. K. Ahn, H. Aihara, S. Al Said, D. M. Asner, H. Atmacan, V. Aulchenko, T. Aushev, R. Ayad, V. Babu, I. Badhrees, A. M. Bakich, V. Bansal, P. Behera, C. Beleño, M. Berger, V. Bhardwaj, B. Bhuyan, T. Bilka, J. Biswal, G. Bonvicini, A. Bozek, M. Bračko, T. E. Browder, L. Cao, D. Červenkov, M. C. Chang, V. Chekelian, A. Chen, B. G. Cheon, K. Chilikin, K. Cho, S. K. Choi, Y. Choi, S. Choudhury, D. Cinabro, S. Cunliffe, N. Dash, S. Di Carlo, Z. DoleŽal, T. V. Dong, Z. Drásal, S. Eidelman, D. Epifanov, J. E. Fast, T. Ferber, B. G. Fulsom, R. Garg, V. Gaur, N. Gabyshev, A. Garmash, M. Gelb, A. Giri, P. Goldenzweig, E. Guido, J. Haba, K. Hayasaka, H. Hayashii, S. Hirose, W. S. Hou, C. L. Hsu, T. Iijima, K. Inami, G. Inguglia, A. Ishikawa, R. Itoh, M. Iwasaki, Y. Iwasaki, W. W. Jacobs, H. B. Jeon, S. Jia, Y. Jin, D. Joffe, K. K. Joo, T. Julius, A. B. Kaliyar, T. Kawasaki, H. Kichimi, C. Kiesling, D. Y. Kim, H. J. Kim, J. B. Kim, K. T. Kim, S. H. Kim, K. Kinoshita, P. Kodyš, S. Korpar, D. Kotchetkov, P. KriŽan, R. Kroeger, P. Krokovny, T. Kuhr, R. Kulasiri, A. Kuzmin, Y. J. Kwon, Y. T. Lai

    Physical Review D   99 ( 3 )   032003-1 - 032003-9   2019年2月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    © 2019 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the https://creativecommons.org/licenses/by/4.0/ Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Funded by SCOAP 3 . We report the study of B+→pΛ̄K+K- and B+→p̄ΛK+K+ decays using a 772×106 BB̄ pair data sample recorded on the Ï (4S) resonance with the Belle detector at KEKB. The following branching fractions are measured: B(B+→pΛ̄K+K-)=(4.10-0.43+0.45±0.50)×10-6, B(B+→p̄ΛK+K+)=(3.70-0.37+0.39±0.44)×10-6, B(ηc→pΛ̄K-+c.c.)=(2.83-0.34+0.36±0.35)×10-3 and B(B+→pΛ̄φ)=(7.95±2.09±0.77)×10-7, where c.c. denotes the corresponding charge-conjugation process. The intermediate resonance decays are excluded in the four-body decay measurements. We also find evidence for B(ηc→Λ(1520)Λ̄+c.c.)=(3.48±1.48±0.46)×10-3 and B(B+→Λ(1520)Λ̄K+)=(2.23±0.63±0.25)×10-6. No significant signals are found for J/ψ→Λ(1520)Λ̄+c.c. and B+→Λ̄(1520)ΛK+; we set the 90% confidence level upper limits on their decay branching fractions as <1.80×10-3 and <2.08×10-6, respectively.

    DOI: 10.1103/PhysRevD.99.032003

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  • Measurements of isospin asymmetry and difference of direct CP asymmetries in inclusive B →xsγ decays 査読

    S. Watanuki, A. Ishikawa, I. Adachi, H. Aihara, S. Al Said, D. M. Asner, T. Aushev, R. Ayad, V. Babu, I. Badhrees, A. M. Bakich, V. Bansal, P. Behera, C. Beleño, M. Berger, V. Bhardwaj, B. Bhuyan, T. Bilka, J. Biswal, A. Bobrov, G. Bonvicini, A. Bozek, M. Bračko, T. E. Browder, L. Cao, D. Červenkov, P. Chang, B. G. Cheon, K. Chilikin, K. Cho, Y. Choi, S. Choudhury, D. Cinabro, S. Cunliffe, S. Di Carlo, J. Dingfelder, T. V. Dong, S. Eidelman, D. Epifanov, J. E. Fast, T. Ferber, A. Frey, B. G. Fulsom, V. Gaur, N. Gabyshev, A. Garmash, M. Gelb, A. Giri, P. Goldenzweig, Y. Guan, E. Guido, J. Haba, K. Hayasaka, H. Hayashii, W. S. Hou, T. Iijima, K. Inami, G. Inguglia, R. Itoh, M. Iwasaki, Y. Iwasaki, W. W. Jacobs, I. Jaegle, H. B. Jeon, S. Jia, Y. Jin, K. K. Joo, T. Julius, G. Karyan, T. Kawasaki, C. Kiesling, D. Y. Kim, J. B. Kim, S. H. Kim, K. Kinoshita, P. Kodyš, S. Korpar, D. Kotchetkov, P. KriŽan, R. Kroeger, P. Krokovny, T. Kuhr, R. Kumar, A. Kuzmin, Y. J. Kwon, I. S. Lee, S. C. Lee, L. K. Li, Y. B. Li, L. Li Gioi, J. Libby, D. Liventsev, M. Lubej, T. Luo, M. Masuda, T. Matsuda, M. Merola, K. Miyabayashi, H. Miyata, R. Mizuk

    Physical Review D   99 ( 3 )   032012-1 - 032012-13   2019年2月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    © 2019 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the https://creativecommons.org/licenses/by/4.0/ Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Funded by SCOAP 3 . We report measurements of isospin asymmetry Δ0- and difference of direct CP asymmetries ΔACP between charged and neutral B→Xsγ decays. This analysis is based on the data sample containing 772×106BB̄ pairs that was collected with the Belle detector at the KEKB energy-asymmetric e+e- collider. Using a sum-of-exclusive technique with invariant Xs mass up to 2.8 GeV/c2, we obtain Δ0-=[-0.48±1.49(stat)±0.97(syst)±1.15(f+-/f00)]% and ΔACP=[+3.69±2.65(stat)±0.76(syst)]%, where the last uncertainty for Δ0- is due to the uncertainty on the production ratio of B+B- to B0B̄0 in Ï (4S) decays. The measured value of Δ0- is consistent with zero, allowing us to constrain the resolved photon contribution in the B→Xsγ, and improve the branching fraction prediction. The result for ΔACP is consistent with the prediction of the SM. We also measure the direct CP asymmetries for charged and neutral B→Xsγ decays. All the measurements are the most precise to date.

    DOI: 10.1103/PhysRevD.99.032012

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  • Measurements of branching fraction and direct $CP$ asymmetry in ${B}^{\pm}{\rightarrow}{K}_{S}^{0}{K}_{S}^{0}{K}^{\pm}$ and a search for ${B}^{\pm}\rightarrow K_S^0K_S^0\pi^\pm$ 査読

    The Belle collaboration, K, Hayasaka は

    Phys. Rev. D   99 ( 3 )   031102-1 - 031102-9   2019年2月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.1103/PhysRevD.99.031102

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  • Search for a Light CP -odd Higgs Boson and Low-Mass Dark Matter at the Belle Experiment 査読

    I. S. Seong, S. E. Vahsen, I. Adachi, H. Aihara, S. Al Said, D. M. Asner, V. Aulchenko, T. Aushev, R. Ayad, V. Babu, A. M. Bakich, V. Bansal, P. Behera, V. Bhardwaj, B. Bhuyan, T. Bilka, J. Biswal, A. Bobrov, G. Bonvicini, A. Bozek, M. Bračko, T. E. Browder, L. Cao, D. Červenkov, P. Chang, V. Chekelian, A. Chen, B. G. Cheon, K. Chilikin, K. Cho, Y. Choi, S. Choudhury, D. Cinabro, S. Cunliffe, N. Dash, S. Di Carlo, J. Dingfelder, T. V. Dong, S. Eidelman, D. Epifanov, J. E. Fast, A. Frey, B. G. Fulsom, R. Garg, V. Gaur, N. Gabyshev, A. Garmash, M. Gelb, A. Giri, P. Goldenzweig, B. Golob, E. Guido, J. Haba, K. Hayasaka, H. Hayashii, M. T. Hedges, T. Higuchi, W. S. Hou, C. L. Hsu, K. Huang, T. Iijima, K. Inami, G. Inguglia, A. Ishikawa, R. Itoh, M. Iwasaki, Y. Iwasaki, W. W. Jacobs, H. B. Jeon, S. Jia, Y. Jin, D. Joffe, K. K. Joo, T. Julius, A. B. Kaliyar, G. Karyan, T. Kawasaki, H. Kichimi, C. Kiesling, D. Y. Kim, J. B. Kim, K. T. Kim, S. H. Kim, K. Kinoshita, P. Kodyš, S. Korpar, D. Kotchetkov, P. KriŽan, R. Kroeger, P. Krokovny, T. Kuhr, T. Kumita, A. Kuzmin, Y. J. Kwon, J. S. Lange, I. S. Lee, S. C. Lee, L. K. Li, Y. B. Li, L. Li Gioi

    Physical Review Letters   122 ( 1 )   011801-1 - 011801-8   2019年1月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    © 2019 authors. Published by the American Physical Society. We report on the first Belle search for a light CP-odd Higgs boson, A0, that decays into low mass dark matter, χ, in final states with a single photon and missing energy. We search for events produced via the dipion transition (2S)→ (1S)π+π-, followed by the on-shell process (1S)→γA0 with A0→χχ, or by the off-shell process (1S)→γχχ. Utilizing a data sample of 157.3×106 (2S) decays, we find no evidence for a signal. We set limits on the branching fractions of such processes in the mass ranges MA0<8.97 GeV/c2 and Mχ<4.44 GeV/c2. We then use the limits on the off-shell process to set competitive limits on WIMP-nucleon scattering in the WIMP mass range below 5 GeV/c2.

    DOI: 10.1103/PhysRevLett.122.011801

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  • Measurement of time-dependent CP violation in B0 → KS0 π0π0 decays 査読

    Y. Yusa, H. Aihara, S. Al Said, D. M. Asner, H. Atmacan, V. Aulchenko, T. Aushev, R. Ayad, V. Babu, I. Badhrees, S. Bahinipati, A. M. Bakich, V. Bansal, P. Behera, V. Bhardwaj, B. Bhuyan, J. Biswal, A. Bozek, M. Bračko, T. E. Browder, L. Cao, D. Červenkov, V. Chekelian, A. Chen, B. G. Cheon, K. Chilikin, S. K. Choi, Y. Choi, D. Cinabro, S. Cunliffe, N. Dash, S. Di Carlo, T. V. Dong, Z. Drásal, S. Eidelman, D. Epifanov, J. E. Fast, B. G. Fulsom, R. Garg, V. Gaur, A. Garmash, A. Giri, P. Goldenzweig, B. Golob, Y. Guan, J. Haba, K. Hayasaka, H. Hayashii, S. Hirose, K. Inami, G. Inguglia, A. Ishikawa, R. Itoh, M. Iwasaki, Y. Iwasaki, W. W. Jacobs, S. Jia, Y. Jin, K. K. Joo, K. H. Kang, T. Kawasaki, C. Kiesling, D. Y. Kim, J. B. Kim, K. T. Kim, S. H. Kim, K. Kinoshita, P. Kodyš, S. Korpar, D. Kotchetkov, P. KriŽan, R. Kroeger, T. Kuhr, R. Kumar, Y. J. Kwon, J. S. Lange, I. S. Lee, S. C. Lee, L. K. Li, Y. B. Li, L. Li Gioi, J. Libby, D. Liventsev, M. Lubej, T. Luo, M. Masuda, T. Matsuda, M. Merola, K. Miyabayashi, H. Miyata, R. Mizuk, G. B. Mohanty, H. K. Moon, E. Nakano, M. Nakao, T. Nanut, K. J. Nath, Z. Natkaniec, N. K. Nisar, S. Nishida

    Physical Review D   99 ( 1 )   011102-1 - 011102-7   2019年1月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    © 2019 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the »https://creativecommons.org/licenses/by/4.0/» Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Funded by SCOAP 3 . We report a measurement of time-dependent CP violation in B0→KS0π0π0 decays using a data sample of 772×106 BB pairs collected by the Belle experiment running at the ?(4S) resonance at the KEKB e+e- collider. This decay proceeds mainly via a b→sdd "penguin" amplitude. The results are sin2φ1eff=0.92-0.31+0.27 (stat.) ±0.11 (syst.) and A=0.28±0.21 (stat.) ±0.04 (syst.), which are the most precise measurements of CP violation in this decay mode to date. The value for the CP-violating parameter sin2φ1eff is consistent with that obtained using decay modes proceeding via a b→ccs "tree" amplitude.

    DOI: 10.1103/PhysRevD.99.011102

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  • Search for CP violation with kinematic asymmetries in the D0 →k+K-π+π- decay 査読

    J. B. Kim, E. Won, I. Adachi, H. Aihara, S. Al Said, D. M. Asner, H. Atmacan, V. Aulchenko, T. Aushev, V. Babu, I. Badhrees, S. Bahinipati, A. M. Bakich, V. Bansal, P. Behera, C. Beleño, B. Bhuyan, T. Bilka, J. Biswal, A. Bobrov, A. Bozek, M. Bračko, L. Cao, D. Červenkov, P. Chang, V. Chekelian, A. Chen, B. G. Cheon, K. Chilikin, K. Cho, S. K. Choi, Y. Choi, D. Cinabro, S. Cunliffe, N. Dash, S. Di Carlo, Z. DoleŽal, T. V. Dong, S. Eidelman, D. Epifanov, J. E. Fast, T. Ferber, A. Frey, B. G. Fulsom, R. Garg, V. Gaur, N. Gabyshev, A. Garmash, M. Gelb, A. Giri, P. Goldenzweig, D. Greenwald, Y. Guan, J. Haba, T. Hara, K. Hayasaka, H. Hayashii, W. S. Hou, T. Iijima, K. Inami, G. Inguglia, A. Ishikawa, R. Itoh, M. Iwasaki, Y. Iwasaki, S. Jia, Y. Jin, D. Joffe, G. Karyan, T. Kawasaki, H. Kichimi, C. Kiesling, D. Y. Kim, H. J. Kim, S. H. Kim, K. Kinoshita, P. Kodyš, S. Korpar, D. Kotchetkov, P. KriŽan, R. Kroeger, P. Krokovny, R. Kulasiri, A. Kuzmin, Y. J. Kwon, Y. T. Lai, K. Lalwani, J. S. Lange, I. S. Lee, J. K. Lee, J. Y. Lee, S. C. Lee, C. H. Li, L. K. Li, Y. B. Li, L. Li Gioi, J. Libby, Z. Liptak, D. Liventsev, P. C. Lu

    Physical Review D   99 ( 1 )   011104-1 - 011104-7   2019年1月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    © 2019 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the »https://creativecommons.org/licenses/by/4.0/» Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Funded by SCOAP 3 . We search for CP violation in the singly-Cabibbo-suppressed decay D0→K+K-π+π- using data corresponding to an integrated luminosity of 988 fb-1 collected by the Belle detector at the KEKB e+e- collider. We measure a set of five kinematically dependent CP asymmetries, of which four asymmetries are measured for the first time. The set of asymmetry measurements can be sensitive to CP violation via interference between the different partial-wave contributions to the decay and performed on other pseudoscalar decays. We find no evidence of CP violation.

    DOI: 10.1103/PhysRevD.99.011104

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  • Observation of Transverse Λ / Λ Hyperon Polarization in e+e- Annihilation at Belle 査読

    Y. Guan, A. Vossen, I. Adachi, K. Adamczyk, J. K. Ahn, H. Aihara, S. Al Said, D. M. Asner, H. Atmacan, V. Aulchenko, T. Aushev, R. Ayad, V. Babu, I. Badhrees, A. M. Bakich, V. Bansal, P. Behera, C. Beleño, M. Berger, V. Bhardwaj, B. Bhuyan, T. Bilka, J. Biswal, A. Bobrov, G. Bonvicini, A. Bozek, M. Bračko, T. E. Browder, L. Cao, D. Červenkov, P. Chang, V. Chekelian, A. Chen, B. G. Cheon, K. Chilikin, K. Cho, S. K. Choi, Y. Choi, D. Cinabro, S. Cunliffe, N. Dash, S. Di Carlo, J. Dingfelder, Z. DoleŽal, T. V. Dong, Z. Drásal, S. Eidelman, D. Epifanov, J. E. Fast, T. Ferber, B. G. Fulsom, R. Garg, V. Gaur, N. Gabyshev, A. Garmash, M. Gelb, A. Giri, P. Goldenzweig, B. Golob, E. Guido, J. Haba, K. Hayasaka, H. Hayashii, S. Hirose, W. S. Hou, T. Iijima, K. Inami, G. Inguglia, A. Ishikawa, R. Itoh, M. Iwasaki, Y. Iwasaki, W. W. Jacobs, I. Jaegle, H. B. Jeon, S. Jia, Y. Jin, D. Joffe, K. K. Joo, T. Julius, K. H. Kang, T. Kawasaki, C. Kiesling, D. Y. Kim, H. J. Kim, J. B. Kim, K. T. Kim, S. H. Kim, K. Kinoshita, P. Kodyš, S. Korpar, D. Kotchetkov, P. KriŽan, R. Kroeger, P. Krokovny, T. Kuhr, R. Kulasiri, A. Kuzmin, Y. J. Kwon, J. S. Lange

    Physical Review Letters   122 ( 4 )   042001-1 - 042001-8   2019年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    © 2019 authors. We report the first observation of the spontaneous polarization of Λ and Λ hyperons transverse to the production plane in e+e- annihilation, which is attributed to the effect arising from a polarizing fragmentation function. For inclusive Λ/Λ production, we also report results with subtracted feed-down contributions from Σ0 and charm. This measurement uses a dataset of 800.4 fb-1 collected by the Belle experiment at or near a center-of-mass energy of 10.58 GeV. We observe a significant polarization that rises with the fractional energy carried by the Λ/Λ hyperon.

    DOI: 10.1103/PhysRevLett.122.042001

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  • First Evidence for cos2β&gt;0 and Resolution of the Cabibbo-Kobayashi-Maskawa Quark-Mixing Unitarity Triangle Ambiguity 査読

    I. Adachi, T. Adye, H. Ahmed, J. K. Ahn, H. Aihara, S. Akar, M. S. Alam, J. Albert, F. Anulli, N. Arnaud, D. M. Asner, D. Aston, H. Atmacan, T. Aushev, R. Ayad, V. Babu, I. Badhrees, A. M. Bakich, Sw Banerjee, V. Bansal, R. J. Barlow, G. Batignani, A. Beaulieu, P. Behera, M. Bellis, E. Ben-Haim, D. Bernard, F. U. Bernlochner, S. Bettarini, D. Bettoni, A. J. Bevan, V. Bhardwaj, B. Bhuyan, F. Bianchi, M. Biasini, J. Biswal, V. E. Blinov, M. Bomben, A. Bondar, G. R. Bonneaud, A. Bozek, C. Bozzi, M. Bračko, T. E. Browder, D. N. Brown, D. N. Brown, C. Bünger, P. R. Burchat, A. R. Buzykaev, R. Calabrese, A. Calcaterra, G. Calderini, S. Di Carlo, M. Carpinelli, C. Cartaro, G. Casarosa, R. Cenci, D. S. Chao, J. Chauveau, R. Cheaib, A. Chen, C. Chen, C. H. Cheng, B. G. Cheon, K. Chilikin, K. Cho, Y. Choi, S. Choudhury, M. Chrzaszcz, G. Cibinetto, D. Cinabro, J. Cochran, J. P. Coleman, M. R. Convery, G. Cowan, R. Cowan, L. Cremaldi, S. Cunliffe, N. Dash, M. Davier, C. L. Davis, F. De Mori, G. De Nardo, A. G. Denig, R. De Sangro, B. Dey, F. Di Lodovico, S. Dittrich, Z. DoleŽal, J. Dorfan, Z. Drásal, V. P. Druzhinin, W. Dunwoodie, M. Ebert, B. Echenard, S. Eidelman, G. Eigen, A. M. Eisner, S. Emery, D. Epifanov

    Physical Review Letters   121 ( 26 )   261801-1 - 261801-11   2018年12月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    © 2018 authors. Published by the American Physical Society. We present first evidence that the cosine of the CP-violating weak phase 2β is positive, and hence exclude trigonometric multifold solutions of the Cabibbo-Kobayashi-Maskawa (CKM) Unitarity Triangle using a time-dependent Dalitz plot analysis of B0→D(∗)h0 with D→KS0π+π- decays, where h0 {π0,η,ω} denotes a light unflavored and neutral hadron. The measurement is performed combining the final data sets of the BABAR and Belle experiments collected at the (4S) resonance at the asymmetric-energy B factories PEP-II at SLAC and KEKB at KEK, respectively. The data samples contain (471±3)×106BB pairs recorded by the BABAR detector and (772±11)×106BB pairs recorded by the Belle detector. The results of the measurement are sin2β=0.80±0.14(stat)±0.06(syst)±0.03(model) and cos2β=0.91±0.22(stat)±0.09(syst)±0.07(model). The result for the direct measurement of the angle β of the CKM Unitarity Triangle is β=[22.5±4.4(stat)±1.2(syst)±0.6(model)]°. The measurement assumes no direct CP violation in B0→D(∗)h0 decays. The quoted model uncertainties are due to the composition of the D0→KS0π+π- decay amplitude model, which is newly established by performing a Dalitz plot amplitude analysis using a high-statistics e+e-→cc data sample. CP violation is observed in B0→D(∗)h0 decays at the level of 5.1 standard deviations. The significance for cos2β>0 is 3.7 standard deviations. The trigonometric multifold solution π/2-β=(68.1±0.7)° is excluded at the level of 7.3 standard deviations. The measurement resolves an ambiguity in the determination of the apex of the CKM Unitarity Triangle.

    DOI: 10.1103/PhysRevLett.121.261801

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  • Observation of I (2S) →γηb (1S) Decay 査読

    B. G. Fulsom, T. K. Pedlar, I. Adachi, H. Aihara, S. Al Said, D. M. Asner, H. Atmacan, V. Aulchenko, T. Aushev, R. Ayad, V. Babu, I. Badhrees, A. M. Bakich, V. Bansal, P. Behera, C. Beleño, M. Berger, V. Bhardwaj, B. Bhuyan, T. Bilka, J. Biswal, A. Bondar, G. Bonvicini, A. Bozek, M. Bračko, T. E. Browder, L. Cao, D. Červenkov, V. Chekelian, A. Chen, B. G. Cheon, K. Chilikin, K. Cho, S. K. Choi, Y. Choi, S. Choudhury, D. Cinabro, S. Cunliffe, N. Dash, S. Di Carlo, J. Dingfelder, Z. DoleŽal, T. V. Dong, Z. Drásal, S. Eidelman, D. Epifanov, J. E. Fast, T. Ferber, R. Garg, V. Gaur, N. Gabyshev, A. Garmash, M. Gelb, A. Giri, P. Goldenzweig, E. Guido, J. Haba, K. Hayasaka, H. Hayashii, S. Hirose, W. S. Hou, T. Iijima, K. Inami, G. Inguglia, A. Ishikawa, R. Itoh, M. Iwasaki, Y. Iwasaki, W. W. Jacobs, H. B. Jeon, S. Jia, Y. Jin, D. Joffe, K. K. Joo, T. Julius, T. Kawasaki, H. Kichimi, C. Kiesling, D. Y. Kim, H. J. Kim, J. B. Kim, K. T. Kim, S. H. Kim, K. Kinoshita, P. Kodyš, S. Korpar, D. Kotchetkov, P. KriŽan, R. Kroeger, P. Krokovny, T. Kuhr, R. Kulasiri, A. Kuzmin, Y. J. Kwon, J. S. Lange, I. S. Lee, S. C. Lee, L. K. Li, Y. B. Li, L. Li Gioi

    Physical Review Letters   121 ( 23 )   232001-1 - 232001-8   2018年12月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    © 2018 authors. Published by the American Physical Society. We report the observation of I(2S)→γηb(1S) decay based on an analysis of the inclusive photon spectrum of 24.7 fb-1 of e+e- collisions at the I(2S) center-of-mass energy collected with the Belle detector at the KEKB asymmetric-energy e+e- collider. We measure a branching fraction of B[I(2S)→γηb(1S)]=(6.1-0.7-0.6+0.6+0.9)×10-4 and derive an ηb(1S) mass of 9394.8-3.1-2.7+2.7+4.5 MeV/c2, where the uncertainties are statistical and systematic, respectively. The significance of our measurement is greater than 7 standard deviations, constituting the first observation of this decay mode.

    DOI: 10.1103/PhysRevLett.121.232001

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  • Search for the rare decay of B+ →+νγ with improved hadronic tagging 査読

    M. Gelb, F. U. Bernlochner, P. Goldenzweig, F. Metzner, I. Adachi, H. Aihara, S. Al Said, D. M. Asner, H. Atmacan, T. Aushev, R. Ayad, V. Babu, I. Badhrees, V. Bansal, P. Behera, C. Beleño, B. Bhuyan, J. Biswal, A. Bobrov, M. Bračko, N. Braun, L. Cao, D. Červenkov, V. Chekelian, A. Chen, B. G. Cheon, K. Chilikin, K. Cho, S. K. Choi, Y. Choi, S. Choudhury, D. Cinabro, S. Cunliffe, N. Dash, S. Di Carlo, Z. DoleŽal, T. V. Dong, S. Eidelman, D. Epifanov, J. E. Fast, T. Ferber, A. Frey, B. G. Fulsom, R. Garg, V. Gaur, N. Gabyshev, A. Garmash, J. Gemmler, A. Giri, D. Greenwald, J. Haba, T. Hara, K. Hayasaka, H. Hayashii, W. S. Hou, K. Inami, G. Inguglia, A. Ishikawa, R. Itoh, M. Iwasaki, Y. Iwasaki, W. W. Jacobs, S. Jia, Y. Jin, D. Joffe, K. K. Joo, J. Kahn, A. B. Kaliyar, T. Kawasaki, H. Kichimi, C. Kiesling, D. Y. Kim, H. J. Kim, S. H. Kim, P. Kodyš, S. Korpar, D. Kotchetkov, P. KriŽan, R. Kroeger, P. Krokovny, T. Kuhr, R. Kulasiri, A. Kuzmin, Y. J. Kwon, J. S. Lange, I. S. Lee, J. K. Lee, J. Y. Lee, S. C. Lee, Y. B. Li, L. Li Gioi, J. Libby, D. Liventsev, P. C. Lu, M. Lubej, T. Luo, J. Macnaughton, M. Masuda, M. Merola, K. Miyabayashi

    Physical Review D   98 ( 11 )   112016-1 - 112016-13   2018年12月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    © 2018 authors. Published by the American Physical Society. We present the result of the search for the rare B meson decay of B+→+νγ with =e,μ. For the search the full data set recorded by the Belle experiment of 711 fb-1 integrated luminosity near the (4S) resonance is used. Signal candidates are reconstructed for photon energies Eγ larger than 1 GeV using a novel multivariate tagging algorithm. The novel algorithm fully reconstructs the second B meson produced in the collision using hadronic modes and was specifically trained to recognize the signal signature in combination with hadronic tag-side B meson decays. This approach greatly enhances the performance. Background processes that can mimic this signature, mainly charmless semileptonic decays and continuum processes, are suppressed using multivariate methods. The number of signal candidates is determined by analyzing the missing mass squared distribution as inferred from the signal side particles and the kinematic properties of the tag-side B meson. No significant excess over the background-only hypothesis is observed and upper limits on the partial branching fraction ΔB with Eγ>1 GeV individually for electron and muon final states as well as for the average branching fraction of both lepton final states are reported. We find a Bayesian upper limit of ΔB(B+→+νγ)<3.0×10-6 at 90% CL and also report an upper limit on the first inverse moment of the light-cone distribution amplitude of the B meson of λB>0.24 GeV at 90% CL.

    DOI: 10.1103/PhysRevD.98.112016

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  • Measurement of the branching fraction and time-dependent CP asymmetry for B0 →j /ψπ0 decays 査読

    B. Pal, A. J. Schwartz, H. Aihara, S. Al Said, D. M. Asner, H. Atmacan, V. Aulchenko, T. Aushev, R. Ayad, I. Badhrees, S. Bahinipati, V. Bansal, P. Behera, C. Beleño, B. Bhuyan, T. Bilka, J. Biswal, A. Bozek, M. Bračko, L. Cao, D. Červenkov, V. Chekelian, A. Chen, B. G. Cheon, K. Chilikin, K. Cho, Y. Choi, S. Choudhury, D. Cinabro, S. Cunliffe, N. Dash, S. Di Carlo, Z. DoleŽal, S. Eidelman, D. Epifanov, J. E. Fast, B. G. Fulsom, R. Garg, V. Gaur, A. Garmash, M. Gelb, A. Giri, P. Goldenzweig, B. Golob, Y. Guan, T. Hara, K. Hayasaka, H. Hayashii, T. Higuchi, W. S. Hou, C. L. Hsu, K. Inami, A. Ishikawa, R. Itoh, M. Iwasaki, Y. Iwasaki, W. W. Jacobs, S. Jia, D. Joffe, T. Julius, G. Karyan, D. Y. Kim, K. T. Kim, S. H. Kim, K. Kinoshita, P. Kodyš, S. Korpar, D. Kotchetkov, P. KriŽan, R. Kroeger, P. Krokovny, R. Kulasiri, R. Kumar, A. Kuzmin, Y. J. Kwon, K. Lalwani, S. C. Lee, L. K. Li, Y. B. Li, L. Li Gioi, J. Libby, P. C. Lu, M. Masuda, T. Matsuda, D. Matvienko, M. Merola, K. Miyabayashi, H. Miyata, R. Mizuk, G. B. Mohanty, T. Mori, E. Nakano, M. Nakao, K. J. Nath, Z. Natkaniec, M. Nayak, S. Nishida, S. Ogawa, H. Ono, G. Pakhlova

    Physical Review D   98 ( 11 )   112008-1 - 112008-8   2018年12月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    © 2018 authors. Published by the American Physical Society. We measure the branching fraction and time-dependent CP-violating asymmetry for B0→J/ψπ0 decays using a data sample of 711 fb-1 collected on the (4S) resonance by the Belle experiment running at the KEKB e+e- collider. The branching fraction is measured to be B(B0→J/ψπ0)=[1.62±0.11(stat)±0.06(syst)]×10-5, which is the most precise measurement to date. The measured CP asymmetry parameters are S=-0.59±0.19(stat)±0.03(syst) and A=-0.15±0.14(stat)+0.04-0.03(syst). The mixing-induced CP asymmetry (S) differs from the case of no CP violation by 3.0 standard deviations, and the direct CP asymmetry (A) is consistent with zero.

    DOI: 10.1103/PhysRevD.98.112008

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  • Measurement of the decays Λc → Σππ at Belle 査読

    M. Berger, C. Schwanda, K. Suzuki, I. Adachi, J. K. Ahn, H. Aihara, S. Al Said, D. M. Asner, H. Atmacan, V. Aulchenko, T. Aushev, R. Ayad, V. Babu, I. Badhrees, A. M. Bakich, V. Bansal, P. Behera, V. Bhardwaj, B. Bhuyan, J. Biswal, G. Bonvicini, A. Bozek, M. Bračko, T. E. Browder, D. Červenkov, A. Chen, B. G. Cheon, K. Chilikin, K. Cho, Y. Choi, D. Cinabro, T. Czank, N. Dash, S. Di Carlo, Z. DoleŽal, D. Dutta, S. Eidelman, D. Epifanov, J. E. Fast, T. Ferber, B. G. Fulsom, R. Garg, V. Gaur, N. Gabyshev, A. Garmash, M. Gelb, A. Giri, P. Goldenzweig, O. Grzymkowska, Y. Guan, E. Guido, J. Haba, T. Hara, K. Hayasaka, H. Hayashii, M. T. Hedges, W. S. Hou, T. Iijima, K. Inami, G. Inguglia, A. Ishikawa, R. Itoh, M. Iwasaki, Y. Iwasaki, W. W. Jacobs, I. Jaegle, S. Jia, Y. Jin, K. K. Joo, T. Julius, A. B. Kaliyar, K. H. Kang, G. Karyan, T. Kawasaki, H. Kichimi, C. Kiesling, D. Y. Kim, H. J. Kim, J. B. Kim, K. T. Kim, S. H. Kim, K. Kinoshita, P. Kodyš, S. Korpar, D. Kotchetkov, P. KriŽan, R. Kroeger, P. Krokovny, T. Kuhr, R. Kulasiri, A. Kuzmin, Y. J. Kwon, J. S. Lange, I. S. Lee, S. C. Lee, L. K. Li, Y. Li, L. Li Gioi, J. Libby, D. Liventsev

    Physical Review D   98 ( 11 )   112006-1 - 112006-10   2018年12月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    © 2018 authors. Published by the American Physical Society. We report measurements of the branching fractions of the decays Λc+→Σ+π-π+, Λc+→Σ0π+π0 and Λc+→Σ+π0π0 relative to the reference channel Λc+→pK-π+. The analysis is based on the full data sample collected at and near the (4S) resonance by the Belle detector at the KEKB asymmetric-energy e+e- collider, corresponding to an integrated luminosity of 711 fb-1. We measure B(Λc+→Σ+π-π+)/B(Λc+→pK-π+)=0.719±0.003±0.024, B(Λc+→Σ0π+π0)/B(Λc+→pK-π+)=0.575±0.005±0.036 and B(Λc+→Σ+π0π0)/B(Λc+→pK-π+)=0.247±0.006±0.019. The listed uncertainties are statistical and systematic, respectively.

    DOI: 10.1103/PhysRevD.98.112006

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  • Measurement of ${cos}2{\beta}$ in ${B}^{0}{\rightarrow}{D}^{\mathbf{(}*\mathbf{) } }{h}^{0}$ with $D{\rightarrow}{K}_{S}^{0}{ { \pi } }^{+}{ { \pi } }^{ { - } }$ decays by a combined time-dependent Dalitz plot analysis of BaBar and Belle data 査読

    The Belle collaboration, K, Hayasaka は

    Phys. Rev. D   98 ( 11 )   112012-1 - 112012-29   2018年12月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.1103/PhysRevD.98.112012

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  • Observation of e <sup>+</sup> e <sup>-</sup> → γχ <inf>c1</inf> and search for e <sup>+</sup> e <sup>-</sup> → γχ <inf>c0</inf> , γχ <inf>c2</inf> , and γη <inf>c</inf> at √s near 10.6 GeV at Belle 査読

    S. Jia, X. L. Wang, C. P. Shen, C. Z. Yuan, I. Adachi, H. Aihara, S. Al Said, D. M. Asner, H. Atmacan, V. Aulchenko, T. Aushev, R. Ayad, V. Babu, V. Bansal, P. Behera, C. Beleño, M. Berger, B. Bhuyan, T. Bilka, J. Biswal, A. Bobrov, A. Bozek, M. Bračko, T. E. Browder, L. Cao, D. Červenkov, P. Chang, V. Chekelian, A. Chen, B. G. Cheon, K. Chilikin, K. Cho, S. K. Choi, Y. Choi, S. Choudhury, D. Cinabro, S. Cunliffe, N. Dash, S. Di Carlo, Z. DoleŽal, T. V. Dong, S. Eidelman, D. Epifanov, J. E. Fast, T. Ferber, A. Frey, B. G. Fulsom, R. Garg, V. Gaur, N. Gabyshev, A. Garmash, M. Gelb, A. Giri, P. Goldenzweig, D. Greenwald, J. Haba, K. Hayasaka, H. Hayashii, W. S. Hou, C. L. Hsu, T. Iijima, K. Inami, G. Inguglia, A. Ishikawa, R. Itoh, M. Iwasaki, Y. Iwasaki, W. W. Jacobs, Y. Jin, D. Joffe, J. Kahn, A. B. Kaliyar, G. Karyan, T. Kawasaki, H. Kichimi, C. Kiesling, D. Y. Kim, H. J. Kim, J. B. Kim, S. H. Kim, K. Kinoshita, P. Kodyš, S. Korpar, D. Kotchetkov, P. KriŽan, R. Kroeger, P. Krokovny, T. Kuhr, R. Kulasiri, R. Kumar, A. Kuzmin, Y. J. Kwon, K. Lalwani, J. S. Lange, I. S. Lee, J. Y. Lee, S. C. Lee, C. H. Li, L. K. Li, Y. B. Li

    Physical Review D   98 ( 9 )   092015-1 - 092015-8   2018年11月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    © 2018 authors. Published by the American Physical Society. Using data samples of 89.5 fb-1, 711.0 fb-1, and 121.4 fb-1 collected with the Belle detector at the KEKB asymmetric-energy e+e- collider at center-of-mass energies 10.52, 10.58, and 10.867 GeV, respectively, we study the exclusive reactions e+e-→γχcJ (J=0, 1, 2) and e+e-→γηc. A significant γχc1 signal is observed for the first time at s=10.58 GeV with a significance of 5.1σ including systematic uncertainties. No significant excesses for γχc0, γχc2, and γηc final states are found, and we set 90% credibility level upper limits on the Born cross sections (σB) at 10.52 GeV, 10.58 GeV, and 10.867 GeV. Together with cross sections measured by BESIII at lower center-of-mass energies, the energy dependency of σB(e+e-→γχc1) is obtained.

    DOI: 10.1103/PhysRevD.98.092015

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  • Observation of e+e- →π+π-π0χb1,2 (1P) and search for e+e- →φχb1,2 (1P) at s =10.96 - 11.05 GeV 査読

    J. H. Yin, C. Z. Yuan, I. Adachi, H. Aihara, S. Al Said, D. M. Asner, V. Aulchenko, T. Aushev, R. Ayad, V. Babu, I. Badhrees, S. Bahinipati, A. M. Bakich, V. Bansal, P. Behera, C. Beleño, B. Bhuyan, T. Bilka, J. Biswal, A. Bobrov, A. Bozek, M. Bračko, T. E. Browder, L. Cao, D. Červenkov, P. Chang, V. Chekelian, A. Chen, B. G. Cheon, K. Chilikin, K. Cho, S. K. Choi, Y. Choi, S. Choudhury, D. Cinabro, S. Cunliffe, N. Dash, S. Di Carlo, J. Dingfelder, Z. DoleŽal, T. V. Dong, Z. Drásal, S. Eidelman, D. Epifanov, J. E. Fast, T. Ferber, B. G. Fulsom, R. Garg, V. Gaur, N. Gabyshev, A. Garmash, M. Gelb, A. Giri, P. Goldenzweig, B. Golob, J. Haba, K. Hayasaka, H. Hayashii, S. Hirose, W. S. Hou, T. Iijima, K. Inami, G. Inguglia, A. Ishikawa, R. Itoh, M. Iwasaki, Y. Iwasaki, W. W. Jacobs, I. Jaegle, H. B. Jeon, S. Jia, Y. Jin, D. Joffe, K. K. Joo, T. Julius, K. H. Kang, T. Kawasaki, C. Kiesling, D. Y. Kim, J. B. Kim, K. T. Kim, S. H. Kim, K. Kinoshita, P. Kodyš, S. Korpar, D. Kotchetkov, P. KriŽan, R. Kroeger, P. Krokovny, T. Kuhr, R. Kulasiri, Y. J. Kwon, J. S. Lange, I. S. Lee, S. C. Lee, L. K. Li, Y. B. Li, L. Li Gioi, J. Libby, D. Liventsev

    Physical Review D   98 ( 9 )   091102-1 - 091102-9   2018年11月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    © 2018 authors. Published by the American Physical Society. We report searches for the processes e+e-→π+π-π0χbJ and e+e-→φχbJ (J=1, 2) based on data samples collected by the Belle experiment at the KEKB collider. We report the first observation of the process e+e-→(π+π-π0)non-ωχb1 and first evidence for e+e-→ωχbJ in the vicinity of the ?(11020) resonance, with center-of-mass energies from 10.96 to 11.05 GeV. The significances for (π+π-π0)non-ωχb1 and ωχbJ are greater than 5.3σ and 4.0σ, respectively. We also investigate the energy dependence of the e+e-→π+π-π0χbJ cross section, but we cannot determine whether the contributions are from the ?(10860) and ?(11020) resonances or nonresonant continuum processes. The signals for e+e-→φχbJ are not significant, and the upper limits of the Born cross sections at the 90% confidence level are 0.7 and 1.0 pb for e+e-→φχb1 and φχb2, respectively, for center-of-mass energies from 10.96 to 11.05 GeV.

    DOI: 10.1103/PhysRevD.98.091102

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  • Graph Learning & Fast Transform Coding of 3D River Data 査読

    Weihang Liao, Gene Cheung, Shogo Muramatsu, Hiroyasu Yasuda, Kiyoshi Hayasaka

    Graph Learning & Fast Transform Coding of 3D River Data, Proc. of APSIPA Annual Summit and Conf.   1313 - 1317   2018年11月

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    記述言語:英語   掲載種別:研究論文(国際会議プロシーディングス)  

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  • Evidence of a structure in $\bar{K}^{0} \Lambda_{c}^{+}$ consistent with a charged $\Xi_c(2930)^{+}$, and updated measurement of $\bar{B}^0\rightarrow\bar{K}^0 \Lambda_c^+ \bar{\Lambda}_c^-$ at Belle 査読

    The Belle collaboration, K, Hayasaka は

    The European Physical Journal C   78 ( 11 )   928-1 - 928-10   2018年11月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.1140/epjc/s10052-018-6425-5

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  • Measurement of ηc (1S), ηc (2S), and nonresonant η′π+π- production via two-photon collisions 査読

    Q. N. Xu, I. Adachi, H. Aihara, S. Al Said, D. M. Asner, H. Atmacan, V. Aulchenko, T. Aushev, R. Ayad, V. Babu, I. Badhrees, A. M. Bakich, V. Bansal, E. Barberio, P. Behera, M. Berger, V. Bhardwaj, B. Bhuyan, J. Biswal, A. Bondar, A. Bozek, M. Bračko, D. Červenkov, A. Chen, B. G. Cheon, K. Chilikin, K. Cho, S. K. Choi, Y. Choi, D. Cinabro, S. Cunliffe, T. Czank, N. Dash, S. Di Carlo, Z. DoleŽal, Z. Drásal, S. Eidelman, D. Epifanov, J. E. Fast, T. Ferber, B. G. Fulsom, R. Garg, V. Gaur, N. Gabyshev, A. Garmash, M. Gelb, P. Goldenzweig, Y. Guan, E. Guido, J. Haba, K. Hayasaka, H. Hayashii, M. T. Hedges, W. S. Hou, K. Inami, G. Inguglia, A. Ishikawa, R. Itoh, M. Iwasaki, Y. Iwasaki, I. Jaegle, H. B. Jeon, Y. Jin, K. K. Joo, T. Julius, A. B. Kaliyar, K. H. Kang, G. Karyan, T. Kawasaki, H. Kichimi, C. Kiesling, D. Y. Kim, H. J. Kim, J. B. Kim, P. Kodyš, S. Korpar, D. Kotchetkov, P. KriŽan, R. Kroeger, P. Krokovny, R. Kulasiri, Y. J. Kwon, I. S. Lee, S. C. Lee, L. K. Li, Y. Li, L. Li Gioi, J. Libby, D. Liventsev, M. Lubej, T. Luo, M. Masuda, T. Matsuda, D. Matvienko, M. Merola, K. Miyabayashi, H. Miyata, R. Mizuk, H. K. Moon, T. Mori

    Physical Review D   98 ( 7 )   072001-1 - 072001-17   2018年10月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    © 2018 authors. Published by the American Physical Society. We report the measurement of γγ→ηc(1S),ηc(2S)→η′π+π- with η′ decays to γρ and ηπ+π- using 941 fb-1 of data collected with the Belle detector at the KEKB asymmetric-energy e+e- collider. The ηc(1S) mass and width are measured to be M=[2984.6±0.7 (stat)±2.2 (syst)±0.3 (model)] MeV/c2 and Γ=[30.8-2.2+2.3 (stat)±2.5 (syst)±1.4 (model)] MeV, respectively. First observation of ηc(2S)→η′π+π- with a significance of 5.5σ including systematic error is obtained, and the ηc(2S) mass is measured to be M=[3635.1±3.7 (stat)±2.9 (syst)±0.4 (model)] MeV/c2. The products of the two-photon decay width and branching fraction (B) of decays to η′π+π- are determined to be ΓγγΓγγB=[65.4±2.6 (stat)±7.8 (syst)] eV for ηc(1S) and [5.6-1.1+1.2 (stat)±1.1 (syst)] eV for ηc(2S). The cross sections for γγ→η′π+π- and η′f2(1270) are measured for the first time.

    DOI: 10.1103/PhysRevD.98.072001

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  • Search for the lepton-flavor-violating decay B <sup>0</sup> → K <sup>*0</sup> μ <sup>±</sup> e <sup>∓</sup> 査読

    S. Sandilya, K. Trabelsi, A. J. Schwartz, I. Adachi, H. Aihara, S. Al Said, D. M. Asner, H. Atmacan, V. Aulchenko, T. Aushev, R. Ayad, V. Babu, I. Badhrees, S. Bahinipati, A. M. Bakich, V. Bansal, P. Behera, C. Beleño, V. Bhardwaj, B. Bhuyan, T. Bilka, J. Biswal, A. Bobrov, A. Bozek, M. Bračko, T. E. Browder, L. Cao, D. Červenkov, P. Chang, V. Chekelian, A. Chen, B. G. Cheon, K. Chilikin, K. Cho, S. K. Choi, Y. Choi, S. Choudhury, D. Cinabro, S. Cunliffe, N. Dash, S. Di Carlo, J. Dingfelder, Z. DoleŽal, T. V. Dong, Z. Drásal, S. Eidelman, D. Epifanov, J. E. Fast, T. Ferber, B. G. Fulsom, R. Garg, V. Gaur, N. Gabyshev, A. Garmash, M. Gelb, A. Giri, P. Goldenzweig, B. Golob, D. Greenwald, Y. Guan, J. Haba, T. Hara, K. Hayasaka, H. Hayashii, S. Hirose, W. S. Hou, C. L. Hsu, T. Iijima, K. Inami, G. Inguglia, A. Ishikawa, R. Itoh, M. Iwasaki, Y. Iwasaki, W. W. Jacobs, I. Jaegle, H. B. Jeon, S. Jia, Y. Jin, D. Joffe, K. K. Joo, T. Julius, A. B. Kaliyar, K. H. Kang, T. Kawasaki, H. Kichimi, C. Kiesling, D. Y. Kim, J. B. Kim, K. T. Kim, S. H. Kim, K. Kinoshita, P. Kodyš, S. Korpar, D. Kotchetkov, P. KriŽan, R. Kroeger, P. Krokovny, T. Kuhr, R. Kulasiri

    Physical Review D   98 ( 7 )   071101-1 - 071101-8   2018年10月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    © 2018 authors. Published by the American Physical Society. We have searched for the lepton-flavor-violating decay B0→K∗0μ±e using a data sample of 711 fb-1 that contains 772×106 BB̄ pairs. The data were collected near the (4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. No signals were observed, and we set 90% confidence level upper limits on the branching fractions of B(B0→K∗0μ+e-)<1.2×10-7, B(B0→K∗0μ-e+)<1.6×10-7, and, for both decays combined, B(B0→K∗0μ±e)<1.8×10-7. These are the most stringent limits on these decays to date.

    DOI: 10.1103/PhysRevD.98.071101

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  • Observation of an Excited Ω- Baryon 査読

    J. Yelton, I. Adachi, J. K. Ahn, H. Aihara, S. Al Said, D. M. Asner, H. Atmacan, T. Aushev, R. Ayad, V. Babu, I. Badhrees, S. Bahinipati, A. M. Bakich, V. Bansal, C. Beleño, M. Berger, V. Bhardwaj, B. Bhuyan, T. Bilka, J. Biswal, A. Bondar, G. Bonvicini, A. Bozek, M. Bračko, T. E. Browder, D. Červenkov, V. Chekelian, A. Chen, B. G. Cheon, K. Chilikin, K. Cho, S. K. Choi, Y. Choi, S. Choudhury, D. Cinabro, S. Cunliffe, T. Czank, N. Dash, S. Di Carlo, Z. DoleŽal, T. V. Dong, Z. Drásal, S. Eidelman, D. Epifanov, J. E. Fast, B. G. Fulsom, R. Garg, V. Gaur, N. Gabyshev, A. Garmash, M. Gelb, A. Giri, P. Goldenzweig, D. Greenwald, E. Guido, J. Haba, K. Hayasaka, H. Hayashii, S. Hirose, W. S. Hou, K. Inami, G. Inguglia, A. Ishikawa, R. Itoh, M. Iwasaki, Y. Iwasaki, W. W. Jacobs, H. B. Jeon, S. Jia, Y. Jin, K. K. Joo, T. Julius, A. B. Kaliyar, K. H. Kang, G. Karyan, Y. Kato, C. Kiesling, D. Y. Kim, J. B. Kim, K. T. Kim, S. H. Kim, K. Kinoshita, P. Kodyš, S. Korpar, D. Kotchetkov, P. KriŽan, R. Kroeger, P. Krokovny, T. Kuhr, R. Kumar, A. Kuzmin, Y. J. Kwon, J. S. Lange, I. S. Lee, S. C. Lee, L. K. Li, Y. B. Li, L. Li Gioi, J. Libby, D. Liventsev

    Physical Review Letters   121 ( 5 )   052003-1 - 052003-7   2018年8月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    © 2018 authors. Published by the American Physical Society. Using data recorded with the Belle detector, we observe a new excited hyperon, an Ω∗- candidate decaying into Ξ0K- and Ξ-KS0 with a mass of 2012.4±0.7(stat)±0.6(syst) MeV/c2 and a width of Γ=6.4-2.0+2.5(stat)±1.6(syst) MeV. The Ω∗- is seen primarily in (1S), (2S), and (3S) decays.

    DOI: 10.1103/PhysRevLett.121.052003

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  • Inclusive study of bottomonium production in association with an η meson in e<sup>+</sup>e<sup>-</sup> annihilations near Υ(5 S) : Belle Collaboration 査読

    U. Tamponi, E. Guido, R. Mussa, I. Adachi, H. Aihara, S. Al Said, D. M. Asner, H. Atmacan, V. Aulchenko, T. Aushev, R. Ayad, V. Babu, I. Badhrees, A. M. Bakich, V. Bansal, E. Barberio, P. Behera, M. Berger, V. Bhardwaj, B. Bhuyan, J. Biswal, A. Bondar, A. Bozek, M. Bračko, T. E. Browder, D. Červenkov, A. Chen, B. G. Cheon, K. Chilikin, K. Cho, Y. Choi, D. Cinabro, S. Cunliffe, T. Czank, N. Dash, S. Di Carlo, Z. Doležal, Z. Drásal, S. Eidelman, D. Epifanov, J. E. Fast, T. Ferber, B. G. Fulsom, R. Garg, V. Gaur, N. Gabyshev, A. Garmash, M. Gelb, P. Goldenzweig, J. Haba, T. Hara, K. Hayasaka, H. Hayashii, M. T. Hedges, W. S. Hou, K. Inami, G. Inguglia, A. Ishikawa, R. Itoh, M. Iwasaki, Y. Iwasaki, I. Jaegle, H. B. Jeon, Y. Jin, K. K. Joo, T. Julius, K. H. Kang, T. Kawasaki, H. Kichimi, D. Y. Kim, H. J. Kim, J. B. Kim, K. T. Kim, S. H. Kim, K. Kinoshita, P. Kodyš, S. Korpar, D. Kotchetkov, P. Križan, R. Kroeger, P. Krokovny, R. Kulasiri, Y. J. Kwon, I. S. Lee, S. C. Lee, L. K. Li, Y. Li, L. Li Gioi, J. Libby, D. Liventsev, T. Luo, M. Masuda, T. Matsuda, D. Matvienko, M. Merola, H. Miyata, R. Mizuk, G. B. Mohanty, H. K. Moon, T. Mori

    European Physical Journal C   78 ( 8 )   633-1 - 633-10   2018年8月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    © 2018, The Author(s). We study bottomonium production in association with an η meson in e+e- annihilations near the Υ(5 S) , at a centre-of-mass energy of s=10.866 GeV. The results are based on the 121.4 fb- 1 data sample collected by the Belle experiment at the asymmetric-energy KEKB collider. Only the η meson is reconstructed and the missing-mass spectrum of η candidates is investigated. We observe the e+e-→ ηΥJ(1 D) process and find evidence for the e+e-→ ηΥ(2 S) process, while no significant signals of Υ(1 S) , hb(1 P) , nor hb(2 P) are found. Cross sections for the studied processes are reported.

    DOI: 10.1140/epjc/s10052-018-6086-4

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  • Search for B- →μ- ν μ Decays at the Belle Experiment 査読

    A. Sibidanov, K. E. Varvell, I. Adachi, H. Aihara, S. Al Said, D. M. Asner, T. Aushev, R. Ayad, V. Babu, I. Badhrees, S. Bahinipati, A. M. Bakich, V. Bansal, E. Barberio, P. Behera, B. Bhuyan, J. Biswal, A. Bozek, M. Bračko, T. E. Browder, D. Červenkov, P. Chang, V. Chekelian, A. Chen, B. G. Cheon, K. Chilikin, K. Cho, S. K. Choi, Y. Choi, D. Cinabro, T. Czank, N. Dash, S. Di Carlo, Z. DoleŽal, Z. Drásal, D. Dutta, S. Eidelman, D. Epifanov, J. E. Fast, T. Ferber, B. G. Fulsom, V. Gaur, N. Gabyshev, A. Garmash, P. Goldenzweig, D. Greenwald, Y. Guan, E. Guido, J. Haba, K. Hayasaka, H. Hayashii, M. T. Hedges, S. Hirose, W. S. Hou, C. L. Hsu, T. Iijima, K. Inami, G. Inguglia, A. Ishikawa, R. Itoh, M. Iwasaki, Y. Iwasaki, W. W. Jacobs, I. Jaegle, H. B. Jeon, Y. Jin, K. K. Joo, T. Julius, J. Kahn, A. B. Kaliyar, K. H. Kang, G. Karyan, T. Kawasaki, C. Kiesling, D. Y. Kim, J. B. Kim, S. H. Kim, Y. J. Kim, K. Kinoshita, P. Kodyš, S. Korpar, D. Kotchetkov, P. KriŽan, P. Krokovny, T. Kuhr, R. Kulasiri, R. Kumar, A. Kuzmin, Y. J. Kwon, J. S. Lange, I. S. Lee, C. H. Li, L. Li, L. Li Gioi, J. Libby, D. Liventsev, M. Lubej, T. Luo, M. Masuda, T. Matsuda

    Physical Review Letters   121 ( 3 )   031801-1 - 031801-8   2018年7月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    © 2018 authors. Published by the American Physical Society. We report the results of a search for the rare, purely leptonic decay B-→μ-ν μ performed with a 711 fb-1 data sample that contains 772×106 BB pairs, collected near the (4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. The signal events are selected based on the presence of a high momentum muon and the topology of the rest of the event showing properties of a generic B-meson decay, as well as the missing energy and momentum being consistent with the hypothesis of a neutrino from the signal decay. We find a 2.4 standard deviation excess above background including systematic uncertainties, which corresponds to a branching fraction of B(B-→μ-νμ)=(6.46±2.22±1.60)×10-7 or a frequentist 90% confidence level interval on the B-→μ-ν μ branching fraction of [2.9,10.7]×10-7.

    DOI: 10.1103/PhysRevLett.121.031801

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  • Measurement of the branching fraction of B →d (∗)πν at Belle using hadronic tagging in fully reconstructed events 査読

    A. Vossen, I. Adachi, K. Adamczyk, H. Aihara, S. Al Said, D. M. Asner, V. Aulchenko, T. Aushev, R. Ayad, I. Badhrees, V. Bansal, C. Beleño, B. Bhuyan, T. Bilka, J. Biswal, A. Bondar, A. Bozek, T. E. Browder, D. Červenkov, A. Chen, B. G. Cheon, K. Chilikin, K. Cho, S. K. Choi, Y. Choi, S. Choudhury, D. Cinabro, S. Cunliffe, N. Dash, S. Di Carlo, Z. DoleŽal, S. Eidelman, J. E. Fast, T. Ferber, B. G. Fulsom, R. Garg, V. Gaur, N. Gabyshev, A. Garmash, M. Gelb, P. Goldenzweig, E. Guido, T. Hara, O. Hartbrich, K. Hayasaka, H. Hayashii, M. T. Hedges, S. Hirose, W. S. Hou, K. Inami, A. Ishikawa, R. Itoh, M. Iwasaki, Y. Iwasaki, W. W. Jacobs, I. Jaegle, S. Jia, Y. Jin, T. Julius, D. Y. Kim, H. J. Kim, J. B. Kim, K. T. Kim, S. H. Kim, K. Kinoshita, S. Korpar, D. Kotchetkov, P. KriŽan, R. Kroeger, P. Krokovny, T. Kuhr, R. Kulasiri, T. Kumita, Y. J. Kwon, J. S. Lange, I. S. Lee, S. C. Lee, L. K. Li, Y. Li, L. Li Gioi, J. Libby, D. Liventsev, M. Lubej, M. Masuda, M. Merola, K. Miyabayashi, H. Miyata, R. Mizuk, H. K. Moon, R. Mussa, E. Nakano, M. Nakao, T. Nanut, K. J. Nath, M. Nayak, M. Niiyama, S. Nishida, H. Ono, P. Pakhlov, G. Pakhlova

    Physical Review D   98 ( 1 )   012005-1 - 012005-9   2018年7月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    © 2018 authors. Published by the American Physical Society. We report a measurement of the branching fractions of the decays B→D(∗)πν. The analysis uses 772×106 BB. pairs produced in e+e-→(4S) data recorded by the Belle experiment at the KEKB asymmetric-energy e+e- collider. The tagging B meson in the decay is fully reconstructed in a hadronic decay mode. On the signal side, we reconstruct the decay B→D(∗)πν(=e,μ). The measured branching fractions are B(B+→D-π++ν)=[4.55±0.27 (stat.)±0.39 (syst.)]×10-3, B(B0→D.0π-+ν)=[4.05±0.36 (stat.)±0.41 (syst.)]×10-3, B(B+→D∗-π++ν)=[6.03±0.43 (stat.)±0.38 (syst.)]×10-3, and B(B0→D.∗0π-+ν)=[6.46±0.53 (stat.)±0.52 (syst.)]×10-3. These are in good agreement with the current world-average values.

    DOI: 10.1103/PhysRevD.98.012005

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  • Search for ϒ(1S,2S)→Zc+Zc(′)− and e+e−→Zc+Zc(′)− at s=10.52 , 10.58, and 10.867 GeV 査読

    S. Jia, C. P. Shen, C. Z. Yuan, I. Adachi, H. Aihara, S. Al Said, D. M. Asner, V. Aulchenko, T. Aushev, R. Ayad, V. Babu, I. Badhrees, V. Bansal, P. Behera, C. Beleño, B. Bhuyan, T. Bilka, J. Biswal, A. Bozek, M. Bračko, D. Červenkov, V. Chekelian, A. Chen, B. G. Cheon, K. Chilikin, K. Cho, S. K. Choi, Y. Choi, S. Choudhury, D. Cinabro, S. Cunliffe, N. Dash, S. Di Carlo, Z. DoleŽal, S. Eidelman, J. E. Fast, T. Ferber, B. G. Fulsom, R. Garg, V. Gaur, N. Gabyshev, A. Garmash, M. Gelb, A. Giri, P. Goldenzweig, E. Guido, J. Haba, T. Hara, K. Hayasaka, H. Hayashii, M. T. Hedges, S. Hirose, W. S. Hou, T. Iijima, K. Inami, G. Inguglia, A. Ishikawa, R. Itoh, M. Iwasaki, W. W. Jacobs, I. Jaegle, H. B. Jeon, Y. Jin, T. Julius, G. Karyan, T. Kawasaki, C. Kiesling, D. Y. Kim, H. J. Kim, J. B. Kim, K. T. Kim, S. H. Kim, K. Kinoshita, P. Kodyš, S. Korpar, D. Kotchetkov, P. KriŽan, R. Kroeger, P. Krokovny, T. Kuhr, R. Kulasiri, T. Kumita, Y. J. Kwon, J. S. Lange, I. S. Lee, S. C. Lee, L. K. Li, Y. Li, Y. B. Li, L. Li Gioi, J. Libby, D. Liventsev, M. Lubej, T. Luo, J. MacNaughton, M. Masuda, T. Matsuda, M. Merola, K. Miyabayashi, H. Miyata

    Physical Review D   97 ( 11 )   112004-1 - 112004-16   2018年6月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    © 2018 American Physical Society. The first search for double charged charmoniumlike state production in Ï?(1S) and Ï?(2S) decays and in e+e- annihilation at s=10.52, 10.58, and 10.867 GeV is conducted using data collected with the Belle detector at the KEKB asymmetric energy electron-positron collider. No significant signals are observed in any of the studied modes, and the 90% credibility level upper limits on their product branching fractions in Ï?(1S) and Ï?(2S) decays [B(Ï?(1S,2S)→Zc+Zc(′)-)×B(Zc+→π++cc) (cc=J/ψ, χc1(1P), ψ(2S))] and the product of Born cross section and branching fraction for e+e-→Zc+Zc(′)- (σ(e+e-→Zc+Zc(′)-)×B(Zc+→π++cc)) at s=10.52, 10.58, and 10.867 GeV are determined. Here, Zc refers to the Zc(3900) and Zc(4200) observed in the πJ/ψ final state, the Zc1(4050) and Zc2(4250) in the πχc1(1P) final state, and the Zc(4050) and Zc(4430) in the πψ(2S) final state.

    DOI: 10.1103/PhysRevD.97.112004

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  • Measurement of time-dependent CP asymmetries in B0 → KS0 ηγ decays 査読

    H. Nakano, A. Ishikawa, K. Sumisawa, H. Yamamoto, I. Adachi, H. Aihara, S. Al Said, D. M. Asner, V. Aulchenko, T. Aushev, R. Ayad, V. Babu, I. Badhrees, V. Bansal, P. Behera, C. Beleño, B. Bhuyan, T. Bilka, J. Biswal, A. Bozek, M. Bračko, D. Červenkov, V. Chekelian, B. G. Cheon, K. Chilikin, K. Cho, S. K. Choi, Y. Choi, S. Choudhury, D. Cinabro, S. Cunliffe, N. Dash, S. Di Carlo, Z. DoleŽal, S. Eidelman, J. E. Fast, T. Ferber, B. G. Fulsom, R. Garg, V. Gaur, N. Gabyshev, A. Garmash, M. Gelb, A. Giri, P. Goldenzweig, Y. Guan, E. Guido, J. Haba, T. Hara, K. Hayasaka, H. Hayashii, M. T. Hedges, S. Hirose, W. S. Hou, T. Iijima, K. Inami, G. Inguglia, R. Itoh, M. Iwasaki, Y. Iwasaki, W. W. Jacobs, I. Jaegle, H. B. Jeon, S. Jia, Y. Jin, T. Julius, A. B. Kaliyar, G. Karyan, T. Kawasaki, C. Kiesling, D. Y. Kim, H. J. Kim, J. B. Kim, K. T. Kim, S. H. Kim, K. Kinoshita, P. Kodyš, S. Korpar, D. Kotchetkov, P. KriŽan, R. Kroeger, P. Krokovny, T. Kuhr, R. Kulasiri, T. Kumita, Y. J. Kwon, J. S. Lange, I. S. Lee, S. C. Lee, L. K. Li, Y. Li, Y. B. Li, L. Li Gioi, J. Libby, D. Liventsev, M. Lubej, T. Luo, J. Macnaughton, M. Masuda, T. Matsuda

    Physical Review D   97 ( 9 )   092003-1 - 092003-10   2018年5月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    © 2018 authors. Published by the American Physical Society. We report a measurement of time-dependent CP violation parameters in B0→KS0ηγ decays. The study is based on a data sample, containing 772×106BB pairs, that was collected at the (4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. We obtain the CP violation parameters of S=-1.32±0.77(stat)±0.36(syst) and A=-0.48±0.41(stat)±0.07(syst) for the invariant mass of the KS0η system up to 2.1 GeV/c2.

    DOI: 10.1103/PhysRevD.97.092003

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  • Erratum: Search for B →hν ν decays with semileptonic tagging at Belle (Physical Review D (2017) (R) 96 (091101) DOI: 10.1103/PhysRevD.96.091101) 査読

    Grygier J, Goldenzweig P, Heck M, Adachi I, Aihara H, Al Said S, Asner D.M, Aushev T, Ayad R, Aziz T, Babu V, Badhrees I, Bahinipati S, Bakich A.M, Bansal V, Barberio E, Behera P, Bhuyan B, Biswal J, Bobrov A, Bondar A, Bonvicini G, Bozek A, Bra?ko M, Browder T.E, ?ervenkov D, Chang P, Chekelian V, Chen A, Cheon B.G, Chilikin K, Chistov R, Cho K, Choi Y, Cinabro D, Dash N, Di Carlo S, Dole?al Z, Dr{\'a}sal Z, Dutta D, Eidelman S, Farhat H, Fast J.E, Ferber T, Fulsom B.G, Gaur V, Gabyshev N, Garmash A, Gelb M, Gillard R, Golob B, Grzymkowska O, Guido E, Haba J, Hara T, Hayasaka K, Hayashii H, Hedges M.T, Hsu C.-L, Iijima T, Inami K, Inguglia G, Ishikawa A, Itoh R, Iwasaki Y, Jacobs W.W, Jaegle I, Jeon H.B, Jin Y, Joffe D, Joo K.K, Julius T, Kahn J, Kaliyar A.B, Kang K.H, Karyan G, Katrenko P, Kawasaki T, Keck T, Kichimi H, Kiesling C, Kim D.Y, Kim H.J, Kim J.B, Kim K.T, Kim M.J, Kim S.H, Kinoshita K, Kody? P, Korpar S, Kotchetkov D, Kri?an P, Krokovny P, Kuhr T, Kulasiri R, Kumita T, Kuzmin A, Kwon Y.-J, Lange J.S, Li C.H, Li L, Li Y, Li Gioi L, Libby J, Liventsev D, Lubej M, Luo T, Masuda M, Matsuda T, Matvienko D, Metzner F, Miyabayashi K, Miyake H, Miyata H, Mizuk R, Mohanty G.B, Moon H.K, Mori T, Mussa R, Nakano E, Nakao M, Nanut T, Nath K.J, Natkaniec Z, Nayak M, Nisar N.K, Nishida S, Ogawa S, Okuno S, Ono H, Onuki Y, Pakhlova G, Pal B, Park C.-S, Park C.W, Park H, Paul S, Pedlar T.K, Pes{\'a}ntez L, Piilonen L.E, Prim M, Pulvermacher C, Ritter M, Rostomyan A, Sakai Y, Sandilya S, Santelj L, Sanuki T, Sato Y, Savinov V, Schl{\"u}ter T, Schneider O, Schnell G, Schwanda C, Schwartz A.J, Seino Y, Senyo K, Seong I.S, Sevior M.E, Shebalin V, Shen C.P, Shibata T.-A, Shiu J.-G, Shwartz B, Simon F, Solovieva E, Stari? M, Strube J.F, Sumiyoshi T, Takizawa M, Tamponi U, Tenchini F, Trabelsi K, Tsuboyama T, Uchida M, Uglov T, Unno Y, Uno S, Urquijo P, Ushiroda Y, Van Hulse C, Varner G, Vorobyev V, Vossen A, Waheed E, Wang B, Wang C.H, Wang M.-Z, Wang P, Watanabe M, Watanabe Y, Wehle S, Williams K.M, Won E, Yamamoto H, Yamashita Y, Ye H, Yook Y, Yuan C.Z, Yusa Y, Zhang Z.P, Zhilich V, Zhukova V, Zhulanov V, Ziegler M, Zupanc A

    Physical Review D   97 ( 9 )   2018年5月

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    掲載種別:研究論文(学術雑誌)  

    DOI: 10.1103/PhysRevD.97.099902

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  • Observation of Ξ <inf>c</inf>(2930) <sup>0</sup> and updated measurement of <sup>B-</sup>→<sup>K-</sup>Λc+Λ¯c- at Belle: Belle Collaboration 査読

    Y. B. Li, C. P. Shen, I. Adachi, J. K. Ahn, H. Aihara, S. Al Said, D. M. Asner, T. Aushev, R. Ayad, V. Babu, I. Badhrees, A. M. Bakich, Y. Ban, V. Bansal, P. Behera, M. Berger, V. Bhardwaj, B. Bhuyan, J. Biswal, G. Bonvicini, A. Bozek, M. Bračko, T. E. Browder, D. Červenkov, V. Chekelian, A. Chen, B. G. Cheon, K. Chilikin, K. Cho, S. K. Choi, Y. Choi, D. Cinabro, S. Cunliffe, N. Dash, S. Di Carlo, Z. Doležal, Z. Drásal, S. Eidelman, D. Epifanov, J. E. Fast, T. Ferber, B. G. Fulsom, R. Garg, V. Gaur, N. Gabyshev, A. Garmash, M. Gelb, A. Giri, P. Goldenzweig, E. Guido, J. Haba, T. Hara, K. Hayasaka, H. Hayashii, M. T. Hedges, W. S. Hou, T. Iijima, K. Inami, G. Inguglia, A. Ishikawa, R. Itoh, M. Iwasaki, Y. Iwasaki, W. W. Jacobs, S. Jia, Y. Jin, K. K. Joo, T. Julius, G. Karyan, Y. Kato, T. Kawasaki, H. Kichimi, C. Kiesling, D. Y. Kim, J. B. Kim, K. T. Kim, S. H. Kim, K. Kinoshita, P. Kodyš, S. Korpar, D. Kotchetkov, P. Križan, R. Kroeger, P. Krokovny, R. Kulasiri, T. Kumita, A. Kuzmin, Y. J. Kwon, I. S. Lee, S. C. Lee, L. K. Li, L. Li Gioi, J. Libby, D. Liventsev, M. Lubej, T. Luo, J. MacNaughton, M. Masuda, T. Matsuda, M. Merola

    European Physical Journal C   78 ( 3 )   252-1 - 252-8   2018年3月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    © 2018, The Author(s). We report the first observation of the Ξ c(2930) 0 charmed-strange baryon with a significance greater than 5σ. The Ξ c(2930) 0 is found in its decay to K-Λc+ in B-→K-Λc+Λ¯c- decays. The measured mass and width are [2928.9±3.0(stat.)-12.0+0.9(syst.)] MeV/c2 and [19.5±8.4(stat.)-7.9+5.9(syst.)] MeV, respectively, and the product branching fraction is B(B-→Ξc(2930)0Λ¯c-)B(Ξc(2930)0→K-Λc+)=[1.73±0.45(stat.)±0.21(syst.)]×10-4. We also measure B(B-→K-Λc+Λ¯c-)=[4.80±0.43(stat.)±0.60(syst.)]×10-4 with improved precision, and search for the charmonium-like state Y(4660) and its spin partner, Yη, in the Λc+Λ¯c- invariant mass spectrum. No clear signals of the Y(4660) nor its spin partner are observed and the 90% credibility level (C.L.) upper limits on their production rates are determined. These measurements are obtained from a sample of (772 ± 11) × 10 6BB¯ pairs collected at the Υ (4 S) resonance by the Belle detector at the KEKB asymmetric energy electron–positron collider.

    DOI: 10.1140/epjc/s10052-018-5720-5

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  • Study of KS0 pair production in single-tag two-photon collisions 査読

    M. Masuda, S. Uehara, Y. Watanabe, I. Adachi, J. K. Ahn, H. Aihara, S. Al Said, D. M. Asner, H. Atmacan, V. Aulchenko, T. Aushev, R. Ayad, V. Babu, I. Badhrees, V. Bansal, P. Behera, M. Berger, V. Bhardwaj, B. Bhuyan, J. Biswal, A. Bondar, G. Bonvicini, A. Bozek, M. Bračko, D. Červenkov, A. Chen, B. G. Cheon, K. Chilikin, K. Cho, Y. Choi, S. Choudhury, D. Cinabro, T. Czank, N. Dash, S. Di Carlo, Z. DoleŽal, Z. Drásal, D. Dutta, S. Eidelman, D. Epifanov, J. E. Fast, T. Ferber, B. G. Fulsom, R. Garg, V. Gaur, N. Gabyshev, A. Garmash, M. Gelb, A. Giri, P. Goldenzweig, E. Guido, J. Haba, K. Hayasaka, H. Hayashii, M. T. Hedges, W. S. Hou, T. Iijima, K. Inami, G. Inguglia, A. Ishikawa, R. Itoh, M. Iwasaki, Y. Iwasaki, W. W. Jacobs, I. Jaegle, Y. Jin, K. K. Joo, T. Julius, K. H. Kang, G. Karyan, T. Kawasaki, H. Kichimi, C. Kiesling, D. Y. Kim, H. J. Kim, J. B. Kim, K. T. Kim, S. H. Kim, P. Kodyš, D. Kotchetkov, P. KriŽan, R. Kroeger, P. Krokovny, R. Kulasiri, A. Kuzmin, Y. J. Kwon, I. S. Lee, S. C. Lee, L. K. Li, Y. Li, L. Li Gioi, J. Libby, D. Liventsev, M. Lubej, T. Luo, T. Matsuda, D. Matvienko, M. Merola, K. Miyabayashi, H. Miyata

    Physical Review D   97 ( 5 )   052003-1 - 052003-20   2018年3月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    © 2018 authors. We report a measurement of the cross section for KS0 pair production in single-tag two-photon collisions, γ∗γ→KS0KS0, for Q2 up to 30 GeV2, where Q2 is the negative of the invariant mass squared of the tagged photon. The measurement covers the kinematic range 1.0 GeV<W<2.6 GeV and |cosθ∗|<1.0 for the total energy and kaon scattering angle, respectively, in the γ∗γ center-of-mass system. These results are based on a data sample of 759 fb-1 collected with the Belle detector at the KEKB asymmetric-energy e+e- collider. For the first time, the transition form factor of the f2′(1525) meson is measured separately for the helicity-0, -1, and -2 components and also compared with theoretical calculations. We have derived the cross section for the process for W<2.6 GeV from 121 signal candidate events. Finally, the γ∗γ partial decay widths of the χc0 and χc2 mesons are measured as a function of Q2 based on 10 candidate events in total.

    DOI: 10.1103/PhysRevD.97.052003

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  • Observation of excited Ωc charmed baryons in e+e- collisions 査読

    J. Yelton, I. Adachi, H. Aihara, S. Al Said, D. M. Asner, V. Aulchenko, T. Aushev, R. Ayad, T. Aziz, V. Babu, A. M. Bakich, V. Bansal, E. Barberio, P. Behera, M. Berger, V. Bhardwaj, B. Bhuyan, J. Biswal, A. Bobrov, A. Bozek, M. Bračko, T. E. Browder, D. Červenkov, P. Chang, A. Chen, B. G. Cheon, K. Chilikin, K. Cho, S. K. Choi, Y. Choi, S. Choudhury, D. Cinabro, T. Czank, N. Dash, S. Di Carlo, Z. DoleŽal, D. Dutta, S. Eidelman, J. E. Fast, T. Ferber, B. G. Fulsom, R. Garg, V. Gaur, N. Gabyshev, A. Garmash, M. Gelb, A. Giri, P. Goldenzweig, B. Golob, D. Greenwald, E. Guido, J. Haba, K. Hayasaka, H. Hayashii, M. T. Hedges, W. S. Hou, K. Inami, G. Inguglia, A. Ishikawa, R. Itoh, M. Iwasaki, Y. Iwasaki, W. W. Jacobs, H. B. Jeon, Y. Jin, T. Julius, K. H. Kang, G. Karyan, Y. Kato, T. Kawasaki, H. Kichimi, D. Y. Kim, H. J. Kim, J. B. Kim, S. H. Kim, K. Kinoshita, P. Kodyš, S. Korpar, D. Kotchetkov, P. KriŽan, R. Kroeger, P. Krokovny, T. Kuhr, R. Kulasiri, T. Kumita, A. Kuzmin, Y. J. Kwon, J. S. Lange, I. S. Lee, S. C. Lee, C. H. Li, L. K. Li, Y. Li, L. Li Gioi, D. Liventsev, M. Lubej, T. Luo, M. Masuda, D. Matvienko, M. Merola

    Physical Review D   97 ( 5 )   051102-1 - 051102-6   2018年3月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    © 2018 authors. Using the entire Belle data sample of 980 fb-1 of e+e- collisions, we present the results of a study of excited Ωc charmed baryons in the decay mode Ξc+K-. We show confirmation of four of the five narrow states reported by the LHCb Collaboration: the Ωc(3000), Ωc(3050), Ωc(3066), and Ωc(3090).

    DOI: 10.1103/PhysRevD.97.051102

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  • Measurement of the τ Michel parameters η and ξκ in the radiative leptonic decay τ <sup>-</sup> → l <sup>-</sup> ν <inf>τ</inf> ν <inf>l</inf> γ 査読

    N. Shimizu, H. Aihara, D. Epifanov, I. Adachi, S. Al Said, D. M. Asner, V. Aulchenko, T. Aushev, R. Ayad, V. Babu, I. Badhrees, A. M. Bakich, V. Bansa, E. Barberio, V. Bhardwaj, B. Bhuyan, J. Biswal, A. Bobrov, A. Bozek, M. Bračko, T. E. Browder, D. Červenkov, M. C. Chang, P. Chang, V. Chekelian, A. Chen, B. G. Cheon, K. Chilikin, K. Cho, S. K. Choi, Y. Choi, D. Cinabro, T. Czank, N. Dash, S. Di Carlo, Z. Doležal, D. Dutta, S. Eidelman, J. E. Fast, T. Ferber, B. G. Fulsom, R. Garg, V. Gaur, N. Gabyshev, A. Garmash, M. Gelb, P. Goldenzweig, D. Greenwald, E. Guido, J. Haba, K. Hayasaka, H. Hayashii, M. T. Hedges, S. Hirose, W. S. Hou, T. Iijima, K. Inami, G. Inguglia, A. Ishikawa, R. Itoh, M. Iwasaki, I. Jaegle, H. B. Jeon, S. Jia, Y. Jin, K. K. Joo, T. Julius, K. H. Kang, G. Karyan, T. Kawasaki, C. Kiesling, D. Y. Kim, J. B. Kim, S. H. Kim, Y. J. Kim, K. Kinoshita, P. Kodyš, S. Korpar, D. Kotchetkov, P. Križan, R. Kroeger, P. Krokovny, R. Kulasiri, A. Kuzmin, Y. J. Kwon, J. S. Lange, I. S. Lee, L. K. Li, Y. Li, L. Li Gioi, J. Libby, D. Liventsev, M. Masuda, M. Merola, K. Miyabayashi, H. Miyata, G. B. Mohanty, H. K. Moon, T. Mori, R. Mussa

    Progress of Theoretical and Experimental Physics   2018 ( 2 )   2018年2月

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    掲載種別:研究論文(学術雑誌)  

    © The Author(s) 2018. We present a measurement of the Michel parameters of the τ lepton, η and ξκ, in the radiative leptonic decay τ - → l - ν τ ν l γ using 711 fb -1 of collision data collected with the Belle detector at the KEKB e + e - collider. The Michel parameters are measured in an unbinned maximum likelihood fit to the kinematic distribution of e + e - → τ + τ - → (π + π 0 ν τ )(l - ν τ ν l γ)(l = e or μ The measured values of the Michel parameters are η = -1.3 ± 1.5 ± 0.8 and ξκ = 0.5 ± 0.4 ± 0.2, where the first error is statistical and the second is systematic. This is the first measurement of these parameters. These results are consistent with the Standard Model predictions within their uncertainties, and constrain the coupling constants of the generalized weak interaction.

    DOI: 10.1093/ptep/pty003

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  • Measurement of branching fractions of hadronic decays of the Ω c 0 baryon 査読

    J. Yelton, I. Adachi, H. Aihara, S. Al Said, D. M. Asner, H. Atmacan, V. Aulchenko, T. Aushev, R. Ayad, T. Aziz, V. Babu, A. M. Bakich, V. Bansal, P. Behera, M. Berger, V. Bhardwaj, J. Biswal, A. Bobrov, A. Bondar, A. BozeK, M. Bračko, T. E. Browder, D. Servenkov, M. C. Chang, P. Chang, V. Chekelian, A. Chen, B. G. Cheon, K. Chilikin, K. Cho, S. K. Choi, Y. Choi, S. Choudhury, D. Cinabro, T. CzanK, N. Dash, S. Di Carlo, Z. Doleal, S. Eidelman, J. E. Fast, T. Ferber, B. G. Fulsom, R. Garg, V. Gaur, N. Gabyshev, A. Garmash, M. Gelb, A. Giri, P. Goldenzweig, D. Greenwald, Y. Guan, E. Guido, J. Haba, T. Hara, K. Hayasaka, H. Hayashii, W. S. Hou, T. Iijima, K. Inami, G. Inguglia, A. Ishikawa, R. Itoh, M. Iwasaki, Y. Iwasaki, W. W. Jacobs, H. B. Jeon, Y. Jin, D. Joffe, T. Julius, G. Karyan, T. Kawasaki, H. Kichimi, C. Kiesling, D. Y. Kim, H. J. Kim, J. B. Kim, S. H. Kim, Y. J. Kim, K. Kinoshita, P. Kodyš, S. Korpar, D. Kotchetkov, P. Krian, R. Kroeger, P. Krokovny, T. Kuhr, R. Kulasiri, T. Kumita, A. Kuzmin, Y. J. Kwon, K. Lalwani, J. S. Lange, I. S. Lee, S. C. Lee, L. K. Li, Y. Li, L. Li Gioi, J. Libby, D. Liventsev, M. Lubej

    Physical Review D   97 ( 3 )   032001-1 - 032001-8   2018年2月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    © 2018 authors. Using a data sample of 980 fb-1 of e+e- annihilation data taken with the Belle detector operating at the KEKB asymmetric-energy e+e- collider, we report the results of a study of the decays of the Ωc0 charmed baryon into hadronic final states. We report the most precise measurements to date of the relative branching fractions of the Ωc0 into Ω-π+π0, Ω-π+π-π+, Ξ-K-π+π+, and Ξ0K-π+, as well as the first measurements of the branching fractions of the Ωc0 into Ξ-K̄0π+, Ξ0K̄0, and ΛK̄0K̄0, all with respect to the Ω-π+ decay. In addition, we investigate the resonant substructure of these modes. Finally, we present a limit on the branching fraction for the decay Ωc0→Σ+K-K-π+.

    DOI: 10.1103/PhysRevD.97.032001

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  • Search for CP violation in the D+ →π+π0 decay at Belle 査読

    V. Babu, K. Trabelsi, G. B. Mohanty, T. Aziz, D. Greenwald, I. Adachi, H. Aihara, S. Al Said, D. M. Asner, H. Atmacan, R. Ayad, I. Badhrees, S. Bahinipati, A. M. Bakich, V. Bansal, P. Behera, M. Berger, V. Bhardwaj, J. Biswal, A. Bobrov, A. Bozek, M. Bračko, T. E. Browder, D. Červenkov, A. Chen, B. G. Cheon, K. Chilikin, K. Cho, Y. Choi, S. Choudhury, D. Cinabro, N. Dash, S. Di Carlo, Z. DoleŽal, Z. Drásal, D. Dutta, S. Eidelman, D. Epifanov, J. E. Fast, T. Ferber, B. G. Fulsom, V. Gaur, N. Gabyshev, A. Garmash, M. Gelb, P. Goldenzweig, B. Golob, Y. Guan, E. Guido, J. Haba, K. Hayasaka, H. Hayashii, M. T. Hedges, T. Horiguchi, W. S. Hou, K. Inami, A. Ishikawa, R. Itoh, M. Iwasaki, W. W. Jacobs, H. B. Jeon, S. Jia, Y. Jin, D. Joffe, K. K. Joo, T. Julius, A. B. Kaliyar, J. H. Kang, K. H. Kang, G. Karyan, P. Katrenko, T. Kawasaki, C. Kiesling, D. Y. Kim, H. J. Kim, J. B. Kim, K. T. Kim, S. H. Kim, Y. J. Kim, K. Kinoshita, P. Kodyš, S. Korpar, D. Kotchetkov, P. KriŽan, R. Kroeger, P. Krokovny, T. Kuhr, R. Kulasiri, R. Kumar, A. Kuzmin, Y. J. Kwon, J. S. Lange, L. K. Li, L. Li Gioi, J. Libby, D. Liventsev, M. Lubej, T. Luo, M. Masuda, T. Matsuda

    Physical Review D   97 ( 1 )   011101-1 - 011101-8   2018年1月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    © 2018 authors. Published by the American Physical Society. We search for CP violation in the charged charm meson decay D+→π+π0, based on a data sample corresponding to an integrated luminosity of 921 fb-1 collected by the Belle experiment at the KEKB e+e- asymmetric-energy collider. The measured CP-violating asymmetry is [+2.31±1.24(stat)±0.23(syst)]%, which is consistent with the standard model prediction and has a significantly improved precision compared to previous results.

    DOI: 10.1103/PhysRevD.97.011101

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  • Measurements of the absolute branching fractions of B <sup>+</sup> → X <inf>cc̄</inf> K <sup>+</sup> and B <sup>+</sup> → D̄ <sup>(*)0</sup> π <sup>+</sup> at Belle 査読

    Y. Kato, T. Iijima, I. Adachi, H. Aihara, S. Al Said, D. M. Asner, V. Aulchenko, T. Aushev, R. Ayad, V. Babu, I. Badhrees, A. M. Bakich, V. Bansal, E. Barberio, P. Behera, V. Bhardwaj, B. Bhuyan, J. Biswal, A. Bozek, M. Bračko, T. E. Browder, D. Červenkov, P. Chang, R. Cheaib, V. Chekelian, A. Chen, B. G. Cheon, K. Chilikin, K. Cho, S. K. Choi, Y. Choi, D. Cinabro, T. Czank, N. Dash, S. Di Carlo, Z. DoleŽal, Z. Drásal, D. Dutta, S. Eidelman, D. Epifanov, J. E. Fast, T. Ferber, B. G. Fulsom, V. Gaur, N. Gabyshev, A. Garmash, M. Gelb, P. Goldenzweig, D. Greenwald, E. Guido, J. Haba, K. Hayasaka, H. Hayashii, M. T. Hedges, S. Hirose, W. S. Hou, K. Inami, G. Inguglia, A. Ishikawa, R. Itoh, M. Iwasaki, Y. Iwasaki, W. W. Jacobs, I. Jaegle, H. B. Jeon, Y. Jin, K. K. Joo, T. Julius, A. B. Kaliyar, K. H. Kang, G. Karyan, T. Kawasaki, H. Kichimi, C. Kiesling, D. Y. Kim, J. B. Kim, S. H. Kim, Y. J. Kim, K. Kinoshita, P. Kodyš, S. Korpar, D. Kotchetkov, P. KriŽan, R. Kroeger, P. Krokovny, T. Kuhr, R. Kulasiri, A. Kuzmin, Y. J. Kwon, J. S. Lange, I. S. Lee, C. H. Li, L. Li, L. Li Gioi, J. Libby, D. Liventsev, M. Lubej, T. Luo, M. Masuda, T. Matsuda

    Physical Review D   97 ( 1 )   012005-1 - 012005-10   2018年1月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    © 2018 authors. Published by the American Physical Society. We present the measurement of the absolute branching fractions of B+→Xcc̄K+ and B+→D̄(∗)0π+ decays, using a data sample of 772×106 BB̄ pairs collected at the (4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. Here, Xcc̄ denotes ηc, J/ψ, χc0, χc1, ηc(2S), ψ(2S), ψ(3770), X(3872), and X(3915). We do not observe significant signals for X(3872) or X(3915) and set the 90% confidence level upper limits at B(B+→X(3872)K+)<2.6×10-4 and B(B+→X(3915)K+)<2.8×10-4. These represent the most stringent upper limit for B(B+→X(3872)K+) to date and the first limit for B(B+→X(3915)K+). The measured branching fractions for ηc and ηc(2S) are the most precise to date, B(B+→ηcK+)=(12.0±0.8±0.7)×10-4 and B(B+→ηc(2S)K+)=(4.8±1.1±0.3)×10-4, where the first and second uncertainties are statistical and systematic, respectively.

    DOI: 10.1103/PhysRevD.97.012005

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  • Measurement of the τ lepton polarization and R(D*) in the decay B¯→D*τ−ν¯τ with one-prong hadronic τ decays at Belle 査読

    S. Hirose, T. Iijima, I. Adachi, K. Adamczyk, H. Aihara, S. Al Said, D. M. Asner, H. Atmacan, T. Aushev, R. Ayad, T. Aziz, V. Babu, I. Badhrees, A. M. Bakich, V. Bansal, M. Berger, V. Bhardwaj, B. Bhuyan, J. Biswal, A. Bondar, A. Bozek, M. Bračko, T. E. Browder, D. Červenkov, M. C. Chang, P. Chang, V. Chekelian, A. Chen, B. G. Cheon, K. Chilikin, K. Cho, S. K. Choi, Y. Choi, S. Choudhury, D. Cinabro, T. Czank, N. Dash, S. Di Carlo, Z. DoleŽal, D. Dutta, S. Eidelman, J. E. Fast, T. Ferber, B. G. Fulsom, R. Garg, V. Gaur, N. Gabyshev, A. Garmash, M. Gelb, A. Giri, P. Goldenzweig, B. Golob, Y. Guan, E. Guido, J. Haba, K. Hara, K. Hayasaka, H. Hayashii, M. T. Hedges, T. Higuchi, W. S. Hou, C. L. Hsu, K. Inami, G. Inguglia, A. Ishikawa, R. Itoh, M. Iwasaki, I. Jaegle, H. B. Jeon, Y. Jin, T. Julius, K. H. Kang, G. Karyan, T. Kawasaki, D. Y. Kim, J. B. Kim, S. H. Kim, Y. J. Kim, K. Kinoshita, P. Kodyš, S. Korpar, D. Kotchetkov, P. KriŽan, R. Kroeger, P. Krokovny, T. Kuhr, R. Kulasiri, R. Kumar, A. Kuzmin, Y. J. Kwon, J. S. Lange, I. S. Lee, L. K. Li, Y. Li, L. Li Gioi, J. Libby, D. Liventsev, M. Lubej, T. Matsuda, K. Miyabayashi

    Physical Review D   97 ( 1 )   012004-1 - 012004-17   2018年1月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    © 2018 authors. Published by the American Physical Society. With the full data sample of 772×106 BB̄ pairs recorded by the Belle detector at the KEKB electron-positron collider, the decay B̄→D∗τ-ν̄τ is studied with the hadronic τ decays τ-→π-ντ and τ-→ρ-ντ. The τ polarization Pτ(D∗) in two-body hadronic τ decays is measured, as well as the ratio of the branching fractions R(D∗)=B(B̄→D∗τ-ν̄τ)/B(B̄→D∗-ν̄), where - denotes an electron or a muon. Our results, Pτ(D∗)=-0.38±0.51(stat)-0.16+0.21(syst) and R(D∗)=0.270±0.035(stat)-0.025+0.028(syst), are consistent with the theoretical predictions of the standard model. The polarization values of Pτ(D∗)>+0.5 are excluded at the 90% confidence level.

    DOI: 10.1103/PhysRevD.97.012004

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  • Angular analysis of the e <sup>+</sup> e <sup>-</sup> → D <sup>(*)±</sup> D <sup>*∓</sup> process near the open charm threshold using initial-state radiation 査読

    V. Zhukova, G. Pakhlova, P. Pakhlov, I. Adachi, H. Aihara, S. Al Said, D. M. Asner, V. Aulchenko, T. Aushev, R. Ayad, V. Babu, I. Badhrees, P. Behera, B. Bhuyan, J. Biswal, A. Bobrov, G. Bonvicini, A. Bozek, M. Bračko, T. E. Browder, D. Červenkov, V. Chekelian, A. Chen, B. G. Cheon, K. Chilikin, K. Cho, S. K. Choi, Y. Choi, D. Cinabro, T. Czank, N. Dash, S. Di Carlo, Z. DoleŽal, Z. Drásal, S. Eidelman, H. Farhat, J. E. Fast, T. Ferber, B. G. Fulsom, V. Gaur, A. Garmash, R. Gillard, P. Goldenzweig, O. Grzymkowska, E. Guido, J. Haba, K. Hayasaka, H. Hayashii, M. T. Hedges, W. S. Hou, K. Inami, G. Inguglia, A. Ishikawa, R. Itoh, M. Iwasaki, Y. Iwasaki, W. W. Jacobs, I. Jaegle, H. B. Jeon, S. Jia, Y. Jin, T. Julius, K. H. Kang, G. Karyan, C. Kiesling, D. Y. Kim, K. T. Kim, S. H. Kim, S. Korpar, D. Kotchetkov, P. KriŽan, P. Krokovny, R. Kulasiri, Y. J. Kwon, J. S. Lange, L. Li, L. Li Gioi, D. Liventsev, T. Luo, M. Masuda, T. Matsuda, M. Merola, K. Miyabayashi, H. Miyata, R. Mizuk, G. B. Mohanty, H. K. Moon, T. Mori, M. Nakao, T. Nanut, K. J. Nath, M. Nayak, M. Niiyama, N. K. Nisar, S. Nishida, S. Ogawa, S. L. Olsen, H. Ono, B. Pal, C. S. Park

    Physical Review D   97 ( 1 )   012002-1 - 012002-21   2018年1月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    © 2018 authors. Published by the American Physical Society. We report a new measurement of the exclusive e+e-→D(∗)±D∗ cross sections as a function of the center-of-mass energy from the D(∗)±D∗ threshold through s=6.0 GeV, using the initial-state radiation technique. The analysis is based on a data sample collected with the Belle detector with an integrated luminosity of 951 fb-1. The accuracy of the cross section measurement is increased by a factor of 2 over the first Belle study. We perform the first angular analysis of the e+e-→D∗±D∗ process and decompose this exclusive cross section into three components corresponding to the D∗ helicities.

    DOI: 10.1103/PhysRevD.97.012002

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  • Averages of b-hadron, c-hadron, and τ -lepton properties as of summer 2016 査読

    Y. Amhis, Sw Banerjee, E. Ben-Haim, F. Bernlochner, A. Bozek, C. Bozzi, M. Chrząszcz, J. Dingfelder, S. Duell, M. Gersabeck, T. Gershon, D. Gerstel, P. Goldenzweig, R. Harr, K. Hayasaka, H. Hayashii, M. Kenzie, T. Kuhr, O. Leroy, A. Lusiani, X. R. Lyu, K. Miyabayashi, P. Naik, T. Nanut, A. Oyanguren Campos, M. Patel, D. Pedrini, M. Petrič, M. Rama, M. Roney, M. Rotondo, O. Schneider, C. Schwanda, A. J. Schwartz, J. Serrano, B. Shwartz, R. Tesarek, D. Tonelli, K. Trabelsi, P. Urquijo, R. Van Kooten, J. Yelton, A. Zupanc

    European Physical Journal C   77 ( 12 )   2017年12月

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    掲載種別:研究論文(学術雑誌)  

    © 2017, The Author(s). This article reports world averages of measurements of b-hadron, c-hadron, and τ-lepton properties obtained by the Heavy Flavor Averaging Group using results available through summer 2016. For the averaging, common input parameters used in the various analyses are adjusted (rescaled) to common values, and known correlations are taken into account. The averages include branching fractions, lifetimes, neutral meson mixing parameters, CP violation parameters, parameters of semileptonic decays, and Cabbibo–Kobayashi–Maskawa matrix elements.

    DOI: 10.1140/epjc/s10052-017-5058-4

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  • Search for light tetraquark states in Upsilon(1S) and Upsilon(2S) decays 査読

    S. Jia, C. P. Shen, C. Z. Yuan, I. Adachi, J. K. Ahn, H. Aihara, S. Al Said, D. M. Asner, H. Atmacan, T. Aushev, R. Ayad, V. Babu, I. Badhrees, S. Bahinipati, A. M. Bakich, V. Bansal, P. Behera, M. Berger, V. Bhardwaj, B. Bhuyan, J. Biswal, G. Bonvicini, A. Bozek, M. Bracko, T. E. Browder, D. Cervenkov, M. -C. Chang, V. Chekelian, A. Chen, B. G. Cheon, K. Chilikin, K. Cho, S. -K. Choi, Y. Choi, D. Cinabro, T. Czank, N. Dash, S. Di Carlo, Z. Dolezal, D. Dutta, S. Eidelman, D. Epifanov, J. E. Fast, T. Ferber, B. G. Fulsom, R. Garg, V. Gaur, N. Gabyshev, A. Garmash, M. Gelb, A. Giri, P. Goldenzweig, O. Grzymkowska, E. Guido, J. Haba, T. Hara, K. Hayasaka, H. Hayashii, M. T. Hedges, W. -S. Hou, T. Iijima, K. Inami, G. Inguglia, A. Ishikawa, R. Itoh, M. Iwasaki, Y. Iwasaki, W. W. Jacobs, I. Jaegle, Y. Jin, D. Joffe, K. K. Joo, T. Julius, A. B. Kaliyar, G. Karyan, T. Kawasaki, H. Kichimi, C. Kiesling, D. Y. Kim, H. J. Kim, J. B. Kim, K. T. Kim, S. H. Kim, P. Kodys, S. Korpar, D. Kotchetkov, P. Krizan, R. Kroeger, P. Krokovny, R. Kulasiri, T. Kumita, A. Kuzmin, Y. -J. Kwon, J. S. Lange, I. S. Lee, S. C. Lee, L. K. Li, Y. Li, L. Li Gioi, J. Libby, D. Liventsev, M. Lubej, T. Luo, M. Masuda, T. Matsuda, D. Matvienko, M. Merola, K. Miyabayashi, H. Miyata, R. Mizuk, H. K. Moon, T. Mori, R. Mussa, M. Nakao, T. Nanut, K. J. Nath, Z. Natkaniec, M. Nayak, M. Niiyama, N. K. Nisar, S. Nishida, S. Ogawa, S. Okuno, S. L. Olsen, H. Ono, Y. Onuki, P. Pakhlov, G. Pakhlova, B. Pal, S. Pardi, C. W. Park, H. Park, S. Paul, I. Pavelkin, R. Pestotnik, L. E. Piilonen, M. Ritter, A. Rostomyan, G. Russo, Y. Sakai, M. Salehi, S. Sandilya, L. Santelj, T. Sanuki, V. Savinov, O. Schneider, G. Schnell, C. Schwanda, Y. Seino, K. Senyo, O. Seon, M. E. Sevior, V. Shebalin, T. -A. Shibata, N. Shimizu, J. -G. Shiu, B. Shwartz, J. B. Singh, A. Sokolov, E. Solovieva, M. Staric, J. Stypula, M. Sumihama, T. Sumiyoshi, M. Takizawa, U. Tamponi, K. Tanida, F. Tenchini, M. Uchida, T. Uglov, Y. Unno, S. Uno, P. Urquijo, Y. Usov, C. Van Hulse, G. Varner, A. Vossen, B. Wang, C. H. Wang, M. -Z. Wang, P. Wang, X. L. Wang, M. Watanabe, Y. Watanabe, E. Widmann, E. Won, Y. Yamashita, H. Ye, Y. Yusa, S. Zakharov, Z. P. Zhang, V. Zhilich, V. Zhukova, V. Zhulanov, A. Zupanc

    PHYSICAL REVIEW D   96 ( 11 )   112002-1 - 112002-14   2017年12月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We search for the J(PC) = 0(--) and 1(+-) light tetraquark states with masses up to 2.46 GeV/c(2) in gamma(1S) and gamma(2S) decays with data samples of (102 +/- 2) million and (158 +/- 4) million events, respectively, collected with the Belle detector. No significant signals are observed in any of the studied production modes, and 90% credibility level (C. L.) upper limits on their branching fractions in Upsilon(1S) and Upsilon(2S) decays are obtained. The inclusive branching fractions of the Upsilon(1S) and Upsilon(2S) decays into final states with f(1)(1285) are measured to be B(Upsilon(1S) -&gt; f(1)(1285) + anything) = (46 +/- 28(stat) +/- 13(syst)) x 10(-4) and B(Upsilon(2S) -&gt; f(1)(1285) + anything) = (22 +/- 15(stat) +/- 6.3(syst)) x 10(-4). The measured chi(b2) -&gt; J/Psi + anything branching fraction is measured to be (1.50 +/- 0.34(stat) +/- 0.22(syst)) x 10(-3), and 90% C. L. upper limits for the chi(b0;b1) -&gt; J/Psi + anything branching fractions are found to be 2.3 x 10(-3) and 1.1 x 10(-3), respectively. For B(chi(b1) -&gt; omega + anything), the branching fraction is measured to be (4.9 +/- 1.3(stat) +/- 0.6(syst) x 10(-2). All results reported here are the first measurements for these modes.

    DOI: 10.1103/PhysRevD.96.112002

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  • Evidence for Isospin Violation and Measurement of CP Asymmetries in B -&gt; K*(892)gamma 査読

    T. Horiguchi, A. Ishikawa, H. Yamamoto, I. Adachi, H. Aihara, S. Al Said, D. M. Asner, V. Aulchenko, T. Aushev, R. Ayad, V. Babu, I. Badhrees, A. M. Bakich, V. Bansal, P. Behera, V. Bhardwaj, B. Bhuyan, J. Biswal, A. Bobrov, G. Bonvicini, A. Bozek, M. Bracko, T. E. Browder, D. Cervenkov, V. Chekelian, A. Chen, B. G. Cheon, K. Chilikin, K. Cho, Y. Choi, D. Cinabro, T. Czank, N. Dash, S. Di Carlo, Z. Dolezal, Z. Drasal, D. Dutta, S. Eidelman, D. Epifanov, H. Farhat, J. E. Fast, T. Ferber, B. G. Fulsom, V. Gaur, N. Gabyshev, A. Garmash, M. Gelb, R. Gillard, P. Goldenzweig, B. Golob, Y. Guan, E. Guido, J. Haba, T. Hara, K. Hayasaka, H. Hayashii, M. T. Hedges, T. Higuchi, S. Hirose, W. -S. Hou, T. Iijima, K. Inami, G. Inguglia, R. Itoh, Y. Iwasaki, W. W. Jacobs, I. Jaegle, H. B. Jeon, S. Jia, Y. Jin, D. Joffe, K. K. Joo, T. Julius, K. H. Kang, T. Kawasaki, D. Y. Kim, J. B. Kim, K. T. Kim, M. J. Kim, S. H. Kim, Y. J. Kim, K. Kinoshita, P. Kodys, S. Korpar, D. Kotchetkov, P. Krizan, P. Krokovny, T. Kuhr, R. Kulasiri, R. Kumar, T. Kumita, A. Kuzmin, Y. -J. Kwon, J. S. Lange, C. H. Li, L. Li, L. Li Gioi, J. Libby, D. Liventsev, M. Lubej, T. Luo, M. Masuda, T. Matsuda, D. Matvienko, M. Merola, K. Miyabayashi, H. Miyata, R. Mizuk, G. B. Mohanty, S. Mohanty, H. K. Moon, T. Mori, R. Mussa, E. Nakano, M. Nakao, T. Nanut, K. J. Nath, Z. Natkaniec, M. Nayak, N. K. Nisar, S. Nishida, S. Ogawa, S. Okuno, H. Ono, P. Pakhlov, G. Pakhlova, B. Pal, S. Pardi, C. -S. Park, H. Park, S. Paul, T. K. Pedlar, R. Pestotnik, L. E. Piilonen, K. Prasanth, C. Pulvermacher, J. Rauch, A. Rostomyan, Y. Sakai, S. Sandilya, L. Santelj, V. Savinov, O. Schneider, G. Schnell, C. Schwanda, A. J. Schwartz, Y. Seino, K. Senyo, I. S. Seong, M. E. Sevior, V. Shebalin, C. P. Shen, T. -A. Shibata, J. -G. Shiu, F. Simon, A. Sokolov, E. Solovieva, M. Staric, J. F. Strube, K. Sumisawa, T. Sumiyoshi, M. Takizawa, U. Tamponi, K. Tanida, F. Tenchini, K. Trabelsi, M. Uchida, T. Uglov, Y. Unno, S. Uno, P. Urquijo, Y. Ushiroda, Y. Usov, C. Van Hulse, G. Varner, A. Vinokurova, V. Vorobyev, A. Vossen, C. H. Wang, M. -Z. Wang, P. Wang, Y. Watanabe, S. Watanuki, T. Weber, E. Widmann, E. Won, Y. Yamashita, H. Ye, Z. P. Zhang, V. Zhilich, V. Zhukova, V. Zhulanov, A. Zupanc

    PHYSICAL REVIEW LETTERS   119 ( 19 )   191802-1 - 191802-8   2017年11月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We report the first evidence for isospin violation in B -&gt; K*gamma and the first measurement of the difference of CP asymmetries between B+-&gt;.K*(+)gamma and B-0 -&gt; K-*0 gamma. This analysis is based on the data sample containing 772 x 10(6)BB pairs that was collected with the Belle detector at the KEKB energy-asymmetric e(+)e(-) collider. We find evidence for the isospin violation with a significance of 3.1 sigma, Delta(0+) = [+6.2 +/- 1.5(stat) +/- 0.6(syst) +/- 1.2(f (+-)/f(00))] %, where the third uncertainty is due to the uncertainty on the fraction of B+B- to (BB0)-B-0 production in gamma(4S) decays. The measured value is consistent with predictions of the standard model. The result for the difference of CP asymmetries is Delta A(CP) = [+2.4 +/- 2.8(stat) +/- 0.5(syst)] %, consistent with zero. The measured branching fractions and CP asymmetries for charged and neutral B meson decays are the most precise to date. We also calculate the ratio of branching fractions of B-0 -&gt; K-*0 gamma to B-s(0) -&gt; phi gamma.

    DOI: 10.1103/PhysRevLett.119.191802

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  • Search for B -&gt; h nu(nu)over-bar decays with semileptonic tagging at Belle 査読

    J. Grygier, P. Goldenzweig, M. Heck, I. Adachi, H. Aihara, S. Al Said, D. M. Asner, T. Aushev, R. Ayad, T. Aziz, V. Babu, I. Badhrees, S. Bahinipati, A. M. Bakich, V. Bansal, E. Barberio, P. Behera, B. Bhuyan, J. Biswal, A. Bobrov, A. Bondar, G. Bonvicini, A. Bozek, M. Bracko, T. E. Browder, P. Chang, V. Chekelian, A. Chen, B. G. Cheon, K. Chilikin, R. Chistov, K. Cho, Y. Choi, D. Cinabro, N. Dash, S. Di Carlo, Z. Dolezal, Z. Drasal, D. Dutta, S. Eidelman, H. Farhat, J. E. Fast, T. Ferber, B. G. Fulsom, V. Gaur, N. Gabyshev, A. Garmash, M. Gelb, R. Gillard, B. Golob, O. Grzymkowska, E. Guido, J. Haba, T. Hara, K. Hayasaka, H. Hayashii, M. T. Hedges, C. -L. Hsu, T. Iijima, K. Inami, G. Inguglia, A. Ishikawa, R. Itoh, Y. Iwasaki, W. W. Jacobs, I. Jaegle, H. B. Jeon, Y. Jin, D. Joffe, K. K. Joo, T. Julius, J. Kahn, A. B. Kaliyar, K. H. Kang, G. Karyan, P. Katrenko, T. Kawasaki, T. Keck, H. Kichimi, C. Kiesling, D. Y. Kim, H. J. Kim, J. B. Kim, K. T. Kim, M. J. Kim, S. H. Kim, K. Kinoshita, P. Kodys, S. Korpar, D. Kotchetkov, P. Krizan, P. Krokovny, T. Kuhr, R. Kulasiri, T. Kumita, A. Kuzmin, Y. -J. Kwon, J. S. Lange, C. H. Li, L. Li, Y. Li, L. Li Gioi, J. Libby, D. Liventsev, M. Lubej, T. Luo, M. Masuda, T. Matsuda, D. Matvienko, F. Metzner, K. Miyabayashi, H. Miyake, H. Miyata, R. Mizuk, G. B. Mohanty, H. K. Moon, T. Mori, R. Mussa, E. Nakano, M. Nakao, T. Nanut, K. J. Nath, Z. Natkaniec, M. Nayak, N. K. Nisar, S. Nishida, S. Ogawa, S. Okuno, H. Ono, Y. Onuki, G. Pakhlova, B. Pal, C. -S. Park, C. W. Park, H. Park, S. Paul, T. K. Pedlar, L. Pesantez, L. E. Piilonen, M. Prim, C. Pulvermacher, M. Ritter, A. Rostomyan, Y. Sakai, S. Sandilya, L. Santelj, T. Sanuki, Y. Sato, V. Savinov, T. Schlueter, O. Schneider, G. Schnell, C. Schwanda, A. J. Schwartz, Y. Seino, K. Senyo, I. S. Seong, M. E. Sevior, V. Shebalin, C. P. Shen, T. -A. Shibata, J. -G. Shiu, B. Shwartz, F. Simon, E. Solovieva, M. Staric, J. F. Strube, T. Sumiyoshi, M. Takizawa, U. Tamponi, F. Tenchini, K. Trabelsi, T. Tsuboyama, M. Uchida, T. Uglov, Y. Unno, S. Uno, P. Urquijo, Y. Ushiroda, C. Van Hulse, G. Varner, V. Vorobyev, A. Vossen, E. Waheed, B. Wang, C. H. Wang, M. -Z. Wang, P. Wang, M. Watanabe, Y. Watanabe, S. Wehle, K. M. Williams, E. Won, H. Yamamoto, Y. Yamashita, H. Ye, Y. Yook, C. Z. Yuan, Y. Yusa, Z. P. Zhang, V. Zhilich, V. Zhukova, V. Zhulanov, M. Ziegler, A. Zupanc

    PHYSICAL REVIEW D   96 ( 9 )   091101-1 - 091101-7   2017年11月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We present the results of a search for the rare decays B -&gt; h nu(nu) over bar, where h stands for K+, K-S(0), K*(+); K*(0); pi(+); pi(0), rho(+) and rho(0). The results are obtained with 772 x 10(6) B (B) over bar pairs collected with the Belle detector at the KEKB e(+)e(-) collider. We reconstruct one B meson in a semileptonic decay and require a single h meson but nothing else on the signal side. We observe no significant signal and set upper limits on the branching fractions. The limits set on the B-0 -&gt; K-S(0)nu(nu) over bar, B-0 -&gt; K*(0)nu(nu) over bar, B+ -&gt; pi(+)nu(nu) over bar, B-0 -&gt; pi(0)nu(nu) over bar, B+ -&gt; rho(+)nu(nu) over bar, and B-0 -&gt; rho(0)nu(nu) over bar channels are the world's most stringent.

    DOI: 10.1103/PhysRevD.96.091101

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  • Search for CP Violation and Measurement of the Branching Fraction in the Decay D-0 -&gt; (KSKS0)-K-0 査読

    N. Dash, S. Bahinipati, V. Bhardwaj, K. Trabelsi, I. Adachi, H. Aihara, S. Al Said, D. M. Asner, V. Aulchenko, T. Aushev, R. Ayad, V. Babu, I. Badhrees, A. M. Bakich, V. Bansal, E. Barberio, B. Bhuyan, J. Biswal, A. Bobrov, A. Bondar, G. Bonvicini, A. Bozek, M. Bracko, F. Breibeck, T. E. Browder, D. Cervenkov, M. -C. Chang, V. Chekelian, A. Chen, B. G. Cheon, K. Chilikin, K. Cho, Y. Choi, D. Cinabro, S. Di Carlo, Z. Dolezal, Z. Drasal, D. Dutta, S. Eidelman, D. Epifanov, H. Farhat, J. E. Fast, T. Ferber, B. G. Fulsom, V. Gaur, N. Gabyshev, A. Garmash, R. Gillard, P. Goldenzweig, J. Haba, T. Hara, K. Hayasaka, H. Hayashii, M. T. Hedges, W. -S. Hou, T. Iijima, K. Inami, A. Ishikawa, R. Itoh, Y. Iwasaki, W. W. Jacobs, I. Jaegle, H. B. Jeon, Y. Jin, D. Joffe, K. K. Joo, T. Julius, J. Kahn, A. B. Kaliyar, G. Karyan, P. Katrenko, T. Kawasaki, C. Kiesling, D. Y. Kim, H. J. Kim, J. B. Kim, K. T. Kim, M. J. Kim, S. H. Kim, Y. J. Kim, K. Kinoshita, P. Kodys, S. Korpar, D. Kotchetkov, P. Krizan, P. Krokovny, T. Kuhr, R. Kulasiri, R. Kumar, T. Kumita, A. Kuzmin, Y. -J. Kwon, J. S. Lange, I. S. Lee, C. H. Li, L. Li, Y. Li, L. Li Gioi, J. Libby, D. Liventsev, M. Lubej, T. Luo, M. Masuda, D. Matvienko, M. Merola, K. Miyabayashi, H. Miyata, R. Mizuk, G. B. Mohanty, S. Mohanty, H. K. Moon, T. Mori, R. Mussa, E. Nakano, M. Nakao, T. Nanut, K. J. Nath, Z. Natkaniec, M. Nayak, M. Niiyama, N. K. Nisar, S. Nishida, S. Ogawa, S. Okuno, H. Ono, P. Pakhlov, G. Pakhlova, B. Pal, S. Pardi, C. -S. Park, H. Park, S. Paul, T. K. Pedlar, L. Pesantez, R. Pestotnik, L. E. Piilonen, K. Prasanth, M. Ritter, A. Rostomyan, H. Sahoo, Y. Sakai, S. Sandilya, L. Santelj, T. Sanuki, Y. Sato, V. Savinov, O. Schneider, G. Schnell, C. Schwanda, A. J. Schwartz, Y. Seino, K. Senyo, M. E. Sevior, V. Shebalin, C. P. Shen, T. -A. Shibata, J. -G. Shiu, B. Shwartz, F. Simon, A. Sokolov, E. Solovieva, M. Staric, J. F. Strube, J. Stypula, K. Sumisawa, T. Sumiyoshi, M. Takizawa, U. Tamponi, K. Tanida, F. Tenchini, M. Uchida, T. Uglov, Y. Unno, S. Uno, P. Urquijo, Y. Usov, C. Van Hulse, G. Varner, V. Vorobyev, A. Vossen, E. Waheed, C. H. Wang, M. -Z. Wang, P. Wang, M. Watanabe, Y. Watanabe, E. Widmann, K. M. Williams, E. Won, Y. Yamashita, H. Ye, J. Yelton, Y. Yook, C. Z. Yuan, Y. Yusa, Z. P. Zhang, V. Zhilich, V. Zhukova, V. Zhulanov, A. Zupanc

    PHYSICAL REVIEW LETTERS   119 ( 17 )   171801-1 - 171801-7   2017年10月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We report a study of the decay D-0 -&gt; (KSKS0)-K-0 using 921 fb(-1) of data collected at or near the (sic)(4S) and (sic)(5S) resonances with the Belle detector at the KEKB asymmetric energy e(+)e(-) collider. The measured time-integrated CP asymmetry is A(CP)(D-0 -&gt; (KSKS0)-K-0) = (-0.02 +/- 1.53 +/- 0.02 +/- 0.17)%, and the branching fraction is B(D-0 -&gt; (KSKS0)-K-0) = (1.321 +/- 0.023 +/- 0.036 +/- 0.044) x 10(-4), where the first uncertainty is statistical, the second is systematic, and the third is due to the normalization mode (D-0 -&gt; K-S(0)pi(0)). These results are significantly more precise than previous measurements available for this mode. The A(CP) measurement is consistent with the standard model expectation.

    DOI: 10.1103/PhysRevLett.119.171801

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  • Measurements of the absolute branching fractions of B+ -> Xc(c)over-barK(+) and B+ -> (D)over-bar((*)0)pi(+) at Belle 査読

    Kato Y, Iijima T, Adachi I, Aihara H, Al Said S, Asner D. M, Aulchenko V, Aushev T, Ayad R, Babu V, Badhrees I, Bakich A. M, Bansal V, Barberio E, Behera P, Bhardwaj V, Bhuyan B, Biswal J, Bozek A, Bracko M, Browder T. E, Cervenkov D, Chang P, Cheaib R, Chekelian V, Chen A, Cheon B. G, Chilikin K, Cho K, Choi S. -K, Choi Y, Cinabro D, Czank T, Dash N, Di Carlo S, Dolezal Z, Drasal Z, Dutta D, Eidelman S, Epifanov D, Fast J. E, Ferber T, Fulsom B. G, Gaur V, Gabyshev N, Garmash A, Gelb M, Goldenzweig P, Greenwald D, Guido E, Haba J, Hayasaka K, Hayashii H, Hedges M. T, Hirose S, Hou W. -S, Inami K, Inguglia G, Ishikawa A, Itoh R, Iwasaki M, Iwasaki Y, Jacobs W. W, Jaegle I, Jeon H. B, Jin Y, Joo K. K, Julius T, Kaliyar A. B, Kang K. H, Karyan G, Kawasaki T, Kichimi H, Kiesling C, Kim D. Y, Kim J. B, Kim S. H, Kim Y. J, Kinoshita K, Kodys P, Korpar S, Kotchetkov D, Krizan P, Kroeger R, Krokovny P, Kuhr T, Kulasiri R, Kuzmin A, Kwon Y. -J, Lange J. S, Lee I. S, Li C. H, Li L, Gioi L. Li, Libby J, Liventsev D, Lubej M, Luo T, Masuda M, Matsuda T, Merola M, Miyabayashi K, Miyata H, Mizuk R, Mohanty G. B, Moon H. K, Mori T, Mussa R, Nakano E, Nakao M, Nanut T, Nath K. J, Natkaniec Z, Nayak M, Niiyama M, Nisar N. K, Nishida S, Ogawa S, Okuno S, Ono H, Pakhlov P, Pakhlova G, Pal B, Park C. -S, Park C. W, Park H, Paul S, Pedlar T. K, Pestotnik R, Piilonen L. E, Ritter M, Rostomyan A, Sakai Y, Salehi M, Sandilya S, Sato Y, Savinov V, Schneider O, Schnell G, Schwanda C, Schwartz A. J, Seino Y, Senyo K, Sevior M. E, Shebalin V, Shen C. P, Shibata T. -A, Shiu J. -G, Simon F, Sokolov A, Solovieva E, Staric M, Strube J. F, Sumihama M, Sumisawa K, Sumiyoshi T, Takizawa M, Tamponi U, Tanida K, Tenchini F, Trabelsi K, Uchida M, Uehara S, Uglov T, Unno Y, Uno S, Urquijo P, Usov Y, Van Hulse C, Varner G, Varvell K. E, Vorobyev V, Wang C. H, Wang M. -Z, Wang P, Watanabe M, Watanuki S, Widmann E, Won E, Yamashita Y, Ye H, Yelton J, Yuan C. Z, Yusa Y, Zhang Z. P, Zhilich V, Zhukova V, Zhulanov V, Zupanc A

    PHYSICAL REVIEW D   97 ( 1 )   2017年9月

  • Search for Lambda(+)(c) -&gt; phi p pi(0) and branching fraction measurement of Lambda(+)(c) -&gt; K- pi(+) p pi(0) 査読

    B. Pal, A. J. Schwartz, I. Adachi, H. Aihara, S. Al Said, D. M. Asner, T. Aushev, R. Ayad, I. Badhrees, A. M. Bakich, V. Bansal, P. Behera, M. Berger, V. Bhardwaj, J. Biswal, A. Bobrov, A. Bozek, M. Bracko, T. E. Browder, D. Cervenkov, V. Chekelian, A. Chen, B. G. Cheon, K. Chilikin, K. Cho, S. -K. Choi, Y. Choi, D. Cinabro, N. Dash, S. Di Carlo, Z. Dolezal, Z. Drasal, S. Eidelman, T. Ferber, B. G. Fulsom, V. Gaur, N. Gabyshev, A. Garmash, P. Goldenzweig, E. Guido, T. Hara, K. Hayasaka, H. Hayashii, W. -S. Hou, C. -L. Hsu, K. Inami, A. Ishikawa, R. Itoh, W. W. Jacobs, I. Jaegle, H. B. Jeon, S. Jia, Y. Jin, D. Joffe, K. K. Joo, G. Karyan, Y. Kato, D. Y. Kim, J. B. Kim, K. T. Kim, S. H. Kim, Y. J. Kim, K. Kinoshita, P. Kodys, S. Korpar, D. Kotchetkov, P. Krokovny, T. Kuhr, R. Kulasiri, Y. -J. Kwon, C. H. Li, L. Li, Y. Li, L. Li Gioi, J. Libby, D. Liventsev, M. Lubej, T. Luo, J. MacNaughton, D. Matvienko, M. Merola, K. Miyabayashi, H. Miyata, R. Mizuk, G. B. Mohanty, H. K. Moon, T. Mori, R. Mussa, E. Nakano, M. Nakao, T. Nanut, K. J. Nath, M. Nayak, M. Niiyama, S. Nishida, S. Ogawa, H. Ono, P. Pakhlov, G. Pakhlova, S. Pardi, C. -S. Park, S. Paul, T. K. Pedlar, R. Pestotnik, L. E. Piilonen, M. Ritter, A. Rostomyan, Y. Sakai, S. Sandilya, L. Santelj, T. Sanuki, V. Savinov, O. Schneider, G. Schnell, C. Schwanda, Y. Seino, K. Senyo, M. E. Sevior, T. -A. Shibata, J. -G. Shiu, F. Simon, A. Sokolov, E. Solovieva, M. Staric, J. F. Strube, M. Sumihama, T. Sumiyoshi, M. Takizawa, U. Tamponi, K. Tanida, F. Tenchini, M. Uchida, T. Uglov, S. Uno, C. Van Hulse, G. Varner, K. E. Varvell, A. Vinokurova, V. Vorobyev, C. H. Wang, M. -Z. Wang, X. L. Wang, M. Watanabe, Y. Watanabe, S. Watanuki, E. Widmann, E. Won, Y. Yamashita, H. Ye, J. Yelton, C. Z. Yuan, Z. P. Zhang, V. Zhilich, V. Zhukova, V. Zhulanov, A. Zupanc

    PHYSICAL REVIEW D   96 ( 5 )   051102-1 - 051102-8   2017年9月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We have searched for the Cabibbo-suppressed decay Lambda(+)(c) -&gt; pi p(0) in e(+) e(-) collisions using a data sample corresponding to an integrated luminosity of 915 fb(-1). The data were collected by the Belle experiment at the KEKB e(+) e(-) asymmetric-energy collider running at or near the (4S) and (5S) resonances. No significant signal is observed, and we set an upper limit on the branching fraction of B(Lambda(+)(c) -&gt; phi p(0)) &lt; 15.3 x 10(-5) at 90% confidence level. The contribution of nonresonant Lambda(+)(c) -&gt; K+ K- p pi(0) decays is found to be consistent with zero, and the corresponding upper limit on its branching fraction is set to be B(Lambda(+)(c) -&gt;. K+ K- p pi(0))(NR) &lt; 6.3 x 10(-5) at 90% confidence level. We also search for an intermediate hidden-strangeness pentaquark decay P-s(+) -&gt; phi p. We see no evidence for this intermediate decay and set an upper limit on the product branching fraction of B(Lambda(+)(c) -&gt; P-s(+) pi(0)) x B(P-s(+) -&gt; phi p) &lt; 8.3 x 10(-5) at 90% confidence level. Finally, we measure the branching fraction for the Cabibbo-favored decay Lambda(+)(c) -&gt; K- pi(+) p pi(0); the result is B(Lambda(+)(c) -&gt; K- pi(+) p pi(0)) = (4.42 +/- 0.05(stat)+/- 0.12(syst)+/- 0.16(norm))%, which is the most precise measurement to date.

    DOI: 10.1103/PhysRevD.96.051102

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  • Study of eta and dipion transitions in gamma(4S) decays to lower bottomonia 査読

    E. Guido, R. Mussa, U. Tamponi, I. Adachi, H. Aihara, S. Al Said, D. M. Asner, V. Aulchenko, T. Aushev, R. Ayad, I. Badhrees, A. M. Bakich, V. Bansal, P. Behera, V. Bhardwaj, B. Bhuyan, J. Biswal, A. Bobrov, A. Bondar, A. Bozek, M. Bracko, T. E. Browder, D. Cervenkov, V. Chekelian, A. Chen, B. G. Cheon, K. Chilikin, K. Cho, S. -K. Choi, Y. Choi, D. Cinabro, N. Dash, S. Di Carlo, Z. Dolezal, Z. Drasal, S. Eidelman, D. Epifanov, H. Farhat, J. E. Fast, T. Ferber, B. G. Fulsom, V. Gaur, N. Gabyshev, A. Garmash, M. Gelb, R. Gillard, P. Goldenzweig, J. Haba, T. Hara, K. Hayasaka, H. Hayashii, M. T. Hedges, W. -S. Hou, T. Iijima, K. Inami, G. Inguglia, A. Ishikawa, R. Itoh, Y. Iwasaki, W. W. Jacobs, I. Jaegle, H. B. Jeon, S. Jia, Y. Jin, D. Joffe, K. K. Joo, T. Julius, K. H. Kang, G. Karyan, T. Kawasaki, D. Y. Kim, J. B. Kim, K. T. Kim, M. J. Kim, S. H. Kim, Y. J. Kim, K. Kinoshita, P. Kodys, S. Korpar, D. Kotchetkov, P. Krizan, P. Krokovny, R. Kulasiri, T. Kumita, A. Kuzmin, Y. -J. Kwon, J. S. Lange, P. Lewis, C. H. Li, L. Li, L. Li Gioi, J. Libby, D. Liventsev, M. Lubej, T. Luo, M. Masuda, T. Matsuda, D. Matvienko, M. Merola, K. Miyabayashi, H. Miyata, R. Mizuk, H. K. Moon, T. Mori, E. Nakano, M. Nakao, T. Nanut, J. Nath, Z. Natkaniec, M. Nayak, M. Niiyama, N. K. Nisar, S. Nishida, S. Ogawa, H. Ono, P. Pakhlov, G. Pakhlova, B. Pal, S. Pardi, C. -S. Park, H. Park, S. Paul, T. K. Pedlar, R. Pestotnik, L. E. Piilonen, C. Pulvermacher, M. Ritter, A. Rostomyan, Y. Sakai, S. Sandilya, L. Santelj, T. Sanuki, V. Savinov, O. Schneider, G. Schnell, C. Schwanda, Y. Seino, K. Senyo, M. E. Sevior, V. Shebalin, C. P. Shen, T. -A. Shibata, J. -G. Shiu, B. Shwartz, F. Simon, A. Sokolov, E. Solovieva, M. Staric, J. F. Strube, K. Sumisawa, T. Sumiyoshi, M. Takizawa, K. Tanida, F. Tenchini, K. Trabelsi, M. Uchida, T. Uglov, Y. Unno, S. Uno, Y. Usov, C. Van Hulse, G. Varner, A. Vinokurova, V. Vorobyev, A. Vossen, C. H. Wang, P. Wang, X. L. Wang, M. Watanabe, Y. Watanabe, S. Watanuki, E. Widmann, K. M. Williams, E. Won, Y. Yamashita, H. Ye, C. Z. Yuan, Z. P. Zhang, V. Zhilich, V. Zhukova, V. Zhulanov, A. Zupanc

    PHYSICAL REVIEW D   96 ( 5 )   052005-1 - 052005-11   2017年9月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We study hadronic transitions between bottomonium states using 496 fb(-1) data collected at the gamma(4S) resonance with the Belle detector at the KEKB asymmetric energy e(+)e(-) collider. We measure: B(gamma(4S) -&gt; pi(+)pi(-)gamma(1S)) = (8.2 +/- 0.5(stat.)+/- 0.4(syst.)) x 10(-5), B(gamma(4S) -&gt; pi(+)pi(-)gamma(2S)) = (7.9 +/- 1.0(stat.)+/- 0.4(syst.)) x 10(-5), and B(gamma(4S) -&gt; eta gamma(1S)) = (1.70 +/- 0.23(stat.) +/- 0.08(syst.)) x 10(-4). We measure the ratio of branching fractions R=B(gamma(4S) -&gt; eta gamma(1S))/B(gamma(4S) -&gt; pi(+)pi(-)gamma(1S)) = 2.07 +/- 0.30(stat.)+/- 0.11(syst.). We search for the decay gamma(1(3)D(1,2)) -&gt; eta gamma(1S), but do not find significant evidence for such a transition. We also measure the initial state radiation production cross sections of the gamma(2S,3S) resonances and we find values compatible with the expected ones. Finally, the analysis of the gamma(4S) -&gt; pi(+)pi(-)gamma(1S) events shows indications for a resonant contribution due to the f(0)(980) meson.

    DOI: 10.1103/PhysRevD.96.052005

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  • Measurement of branching fraction and direct CP asymmetry in charmless B+ -&gt; K+ K- pi(+) decays at Belle 査読

    C-L Hsu, D. Dossett, M. E. Sevior, I. Adachi, H. Aihara, S. Al Said, D. M. Asner, H. Atmacan, V. Aulchenko, T. Aushev, R. Ayad, I. Badhrees, A. M. Bakich, E. Barberio, P. Behera, M. Berger, V. Bhardwaj, B. Bhuyan, J. Biswal, T. Bloomfield, A. Bondar, G. Bonvicini, A. Bozek, M. Bracko, T. E. Browder, P. Chang, V. Chekelian, A. Chen, B. G. Cheon, K. Chilikin, R. Chistov, K. Cho, Y. Choi, D. Cinabro, N. Dash, S. Di Carlo, Z. Dolezal, Z. Drasal, S. Eidelman, H. Farhat, J. E. Fast, B. G. Fulsom, V. Gaur, N. Gabyshev, A. Garmash, P. Goldenzweig, B. Golob, O. Grzymkowska, E. Guido, J. Haba, T. Hara, K. Hayasaka, H. Hayashii, M. T. Hedges, W-S Hou, K. Inami, G. Inguglia, A. Ishikawa, W. W. Jacobs, I. Jaegle, H. B. Jeon, Y. Jin, D. Joffe, K. K. Joo, T. Julius, A. B. Kaliyar, K. H. Kang, P. Katrenko, T. Kawasaki, C. Kiesling, D. Y. Kim, H. J. Kim, J. B. Kim, K. T. Kim, M. J. Kim, S. H. Kim, P. Kodys, S. Korpar, D. Kotchetkov, P. Krizan, P. Krokovny, T. Kuhr, R. Kulasiri, A. Kuzmin, Y-J Kwon, Y-T Lai, J. S. Lange, C. H. Li, L. Li, L. Li Gioi, J. Libby, D. Liventsev, M. Lubej, T. Luo, M. Masuda, T. Matsuda, D. Matvienko, K. Miyabayashi, H. Miyata, R. Mizuk, G. B. Mohanty, T. Mori, R. Mussa, E. Nakano, M. Nakao, T. Nanut, K. J. Nath, Z. Natkaniec, M. Nayak, N. K. Nisar, S. Nishida, S. Ogawa, S. Okuno, H. Ono, Y. Onuki, G. Pakhlova, B. Pal, C-S Park, C. W. Park, H. Park, S. Paul, T. K. Pedlar, L. Pesantez, L. E. Piilonen, M. Ritter, A. Rostomyan, Y. Sakai, S. Sandilya, T. Sanuki, Y. Sato, V. Savinov, O. Schneider, G. Schnell, C. Schwanda, Y. Seino, K. Senyo, V. Shebalin, T-A Shibata, J-G Shiu, B. Shwartz, F. Simon, E. Solovieva, M. Staric, F. Strube, K. Sumisawa, M. Takahashi, M. Takizawa, F. Tenchini, M. Uchida, T. Uglov, Y. Unno, S. Uno, P. Urquijo, Y. Usov, C. Van Hulse, G. Varner, K. E. Varvell, V. Vorobyev, E. Waheed, C. H. Wang, M-Z Wang, X-L Wang, M. Watanabe, Y. Watanabe, E. Widmann, K. M. Williams, E. Won, Y. Yamashita, H. Ye, Z. P. Zhang, V. Zhilich, V. Zhukova, V. Zhulanov, A. Zupanc

    PHYSICAL REVIEW D   96 ( 3 )   031101-1 - 031101-8   2017年8月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We report a study of the charmless hadronic decay of the charged B meson to the three-body final state K+K-pi(+). The results are based on a data sample that contains 772 x 10(6) B (B) over bar pairs collected at the Y (4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. The measured inclusive branching fraction and direct CP asymmetry are (5.38 +/- 0.40 +/- 0.35) x 10(-6) and -0.170 +/- 0.073 +/- 0.017, respectively, where the first uncertainties are statistical and the second are systematic. The K+K- invariant mass distribution of the signal candidates shows an excess in the region below 1.5 GeV/c(2), which is consistent with the previous studies from BABAR and LHCb. In addition, strong evidence of a large direct CP asymmetry is found in the low K+K- invariant-mass region.

    DOI: 10.1103/PhysRevD.96.031101

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  • Invariant-mass and fractional-energy dependence of inclusive production of dihadrons in e(+) e(-) annihilation at root s=10.58 GeV 査読

    R. Seidl, I. Adachi, H. Aihara, S. Al Said, D. M. Asner, T. Aushev, R. Ayad, I. Badhrees, A. M. Bakich, V. Bansal, P. Behera, V. Bhardwaj, B. Bhuyan, J. Biswal, A. Bobrov, A. Bozek, M. Bracko, T. E. Browder, D. Cervenkov, V. Chekelian, A. Chen, B. G. Cheon, K. Chilikin, K. Cho, S-K Choi, Y. Choi, D. Cinabro, N. Dash, S. Di Carlo, Z. Dolezal, Z. Drasal, S. Eidelman, H. Farhat, J. E. Fast, T. Ferber, B. G. Fulsom, V. Gaur, N. Gabyshev, A. Garmash, R. Gillard, P. Goldenzweig, E. Guido, J. Haba, K. Hayasaka, H. Hayashii, W-S Hou, T. Iijima, K. Inami, A. Ishikawa, R. Itoh, Y. Iwasaki, W. W. Jacobs, I. Jaegle, H. B. Jeon, S. Jia, Y. Jin, D. Joffe, K. K. Joo, T. Julius, K. H. Kang, G. Karyan, D. Y. Kim, J. B. Kim, K. T. Kim, M. J. Kim, S. H. Kim, Y. J. Kim, K. Kinoshita, P. Kodys, S. Korpar, D. Kotchetkov, P. Krizan, P. Krokovny, R. Kulasiri, T. Kumita, A. Kuzmin, Y-J Kwon, J. S. Lange, L. Li, L. Li Gioi, J. Libby, D. Liventsev, M. Lubej, T. Luo, M. Masuda, T. Matsuda, D. Matvienko, M. Merola, K. Miyabayashi, H. Miyata, R. Mizuk, H. K. Moon, T. Mori, R. Mussa, E. Nakano, M. Nakao, T. Nanut, K. J. Nath, Z. Natkaniec, M. Niiyama, N. K. Nisar, S. Nishida, S. Ogawa, H. Ono, P. Pakhlov, G. Pakhlova, B. Pal, S. Pardi, H. Park, S. Paul, T. K. Pedlar, R. Pestotnik, L. E. Piilonen, C. Pulvermacher, M. Ritter, A. Rostomyan, Y. Sakai, L. Santelj, V. Savinov, O. Schneider, G. Schnell, C. Schwanda, Y. Seino, K. Senyo, M. E. Sevior, V. Shebalin, C. P. Shen, T-A Shibata, J-G Shiu, B. Shwartz, F. Simon, A. Sokolov, E. Solovieva, M. Staric, J. F. Strube, K. Sumisawa, T. Sumiyoshi, M. Takizawa, U. Tamponi, K. Tanida, F. Tenchini, M. Uchida, T. Uglov, Y. Unno, S. Uno, C. Van Hulse, G. Varner, V. Vorobyev, A. Vossen, C. H. Wang, P. Wang, M. Watanabe, Y. Watanabe, S. Watanuki, E. Widmann, E. Won, Y. Yamashita, H. Ye, Z. P. Zhang, V. Zhilich, V. Zhukova, V. Zhulanov, A. Zupanc

    PHYSICAL REVIEW D   96 ( 3 )   032005-1 - 032005-21   2017年8月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    The inclusive cross sections for dihadrons of charged pions and kaons (e(+)e(-) -&gt; hhX) in electron-positron annihilation are reported. They are obtained as a function of the total fractional energy and invariant mass for any di-hadron combination in the same hemisphere as defined by the thrust event-shape variable and its axis. Since same-hemisphere dihadrons can be assumed to originate predominantly from the same initial parton, di-hadron fragmentation functions are probed. These di-hadron fragmentation functions are needed as an unpolarized baseline in order to quantitatively understand related spindependent measurements in other processes and to apply them to the extraction of quark transversity distribution functions in the nucleon. The di- hadron cross sections are obtained from a 655 fb(-1) data sample collected at or near the Y (4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider.

    DOI: 10.1103/PhysRevD.96.032005

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  • Measurement of the branching fraction and CP asymmetry in B-0 -&gt; pi(0)pi(0) decays, and an improved constraint on phi(2) 査読

    T. Julius, M. E. Sevior, G. B. Mohanty, I. Adachi, H. Aihara, S. Al Said, D. M. Asner, V. Aulchenko, T. Aushev, R. Ayad, V. Babu, I. Badhrees, A. M. Bakich, V. Bansal, E. Barberio, M. Barrett, M. Berger, V. Bhardwaj, B. Bhuyan, J. Biswal, T. Bloomfield, A. Bobrov, A. Bondar, G. Bonvicini, A. Bozek, M. Bracko, T. E. Browder, D. Cervenkov, M-C Chang, Y. Chao, V. Chekelian, A. Chen, B. G. Cheon, K. Chilikin, K. Cho, Y. Choi, D. Cinabro, N. Dash, S. Di Carlo, Z. Dolezal, D. Dossett, Z. Drasal, D. Dutta, S. Eidelman, H. Farhat, J. E. Fast, T. Ferber, B. G. Fulsom, V. Gaur, N. Gabyshev, A. Garmash, R. Gillard, P. Goldenzweig, J. Haba, T. Hara, K. Hayasaka, H. Hayashii, W-S Hou, C-L Hsu, T. Iijima, K. Inami, A. Ishikawa, R. Itoh, Y. Iwasaki, W. W. Jacobs, I. Jaegle, Y. Jin, D. Joffe, K. K. Joo, J. Kahn, G. Karyan, P. Katrenko, T. Kawasaki, C. Kiesling, D. Y. Kim, H. J. Kim, J. B. Kim, K. T. Kim, M. J. Kim, S. H. Kim, Y. J. Kim, K. Kinoshita, P. Kodys, S. Korpar, D. Kotchetkov, P. Krizan, P. Krokovny, J. F. Krohn, T. Kuhr, R. Kulasiri, A. Kuzmin, Y-J Kwon, J. S. Lange, I. S. Lee, C. H. Li, L. Li, Y. Li, L. Li Gioi, J. Libby, D. Liventsev, T. Luo, J. MacNaughton, M. Masuda, T. Matsuda, M. Merola, K. Miyabayashi, H. Miyata, R. Mizuk, H. K. Moon, T. Mori, R. Mussa, E. Nakano, M. Nakao, T. Nanut, K. J. Nath, Z. Natkaniec, M. Nayak, N. K. Nisar, S. Nishida, S. Ogawa, H. Ono, P. Pakhlov, G. Pakhlova, B. Pal, S. Pardi, C-S Park, H. Park, L. Pesantez, R. Pestotnik, L. E. Piilonen, C. Pulvermacher, M. Ritter, H. Sahoo, Y. Sakai, M. Salehi, S. Sandilya, L. Santelj, T. Sanuki, Y. Sato, V. Savinov, O. Schneider, G. Schnell, C. Schwanda, A. J. Schwartz, Y. Seino, K. Senyo, V. Shebalin, T-A Shibata, J-G. Shiu, B. Shwartz, A. Sokolov, E. Solovieva, M. Staric, T. Sumiyoshi, U. Tamponi, K. Tanida, F. Tenchini, K. Trabelsi, M. Uchida, S. Uehara, T. Uglov, Y. Unno, S. Uno, P. Urquijo, Y. Usov, C. Van Hulse, G. Varner, K. E. Varvell, A. Vossen, E. Waheed, C. H. Wang, M-Z Wang, P. Wang, M. Watanabe, Y. Watanabe, E. Widmann, K. M. Williams, E. Won, Y. Yamashita, H. Ye, C. Z. Yuan, Y. Yusa, Z. P. Zhang, V. Zhilich, V. Zhulanov, A. Zupanc

    PHYSICAL REVIEW D   96 ( 3 )   032007-1 - 032007-8   2017年8月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We measure the branching fraction and CP violation asymmetry in the decay B-0 -&gt; pi(0)pi(0), using a data sample of 752 x 10(6) B (B) over bar pairs collected at the Y(4S) resonance with the Belle detector at the KEKB e(+)e(-) collider. The obtained branching fraction and direct CP asymmetry are B(B -&gt; pi(0)pi(0)) = [1.31 +/- 0.19(stat) +/- 0.19(syst)] x 10(-6) and A(CP) = +0.14 +/- 0.36(stat) +/- 0.10(syst), respectively. The signal significance, including the systematic uncertainty, is 6.4 standard deviations. We combine these results with Belle's earlier measurements of B-0 -&gt; pi(+)pi(-) and B-+/- -&gt; pi(+/-)pi(0) to exclude the CP-violating parameter phi(2) from the range 15.5 degrees &lt; phi(2) &lt; 75.0 degrees at 95% confidence level.

    DOI: 10.1103/PhysRevD.96.032007

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  • MC study for the lepton flavor violating tau decay into a lepton and an undetectable particle 査読

    T. Yoshinobu, Belle collaboration, K. Hayasaka

    287-288   218 - 220   2017年6月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Elsevier B.V.  

    We search for the charged lepton flavor violating (cLFV) two-body decay, τ→lX using data samples collected with the Belle detector at the KEKB asymmetric-energy e+e− collider, where l is muon or electron and X is a missing particle. One of candidates for an X particle is, for example, a light Z′ boson in the Lμ−Lτ model. This decay mode has been searched for in the ARGUS experiment in 1995. No evidence of the signal has been found and they set upper limits for B(τ→lX)/B(τ→lνν) at several values of X mass. With the Belle data sample, we can perform a much more sensitive search. In this paper we report the estimation of the sensitivities and upper limits of the branching fraction for τ→μX depending on the X mass with a 1 ab−1 data sample.

    DOI: 10.1016/j.nuclphysbps.2017.03.081

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  • Observation of an alternative chi(c0)(2P) candidate in e(+)e(-)-&gt; J/psi D(D)over-bar 査読

    K. Chilikin, I. Adachi, H. Aihara, S. Al Said, D. M. Asner, V. Aulchenko, R. Ayad, V. Babu, I. Badhrees, A. M. Bakich, V. Bansal, E. Barberio, D. Besson, V. Bhardwaj, B. Bhuyan, J. Biswal, A. Bobrov, A. Bondar, A. Bozek, M. Bracko, T. E. Browder, D. Cervenkov, V. Chekelian, A. Chen, B. G. Cheon, K. Cho, Y. Choi, D. Cinabro, N. Dash, S. Di Carlo, Z. Dolezal, Z. Drasal, D. Dutta, S. Eidelman, H. Farhat, J. E. Fast, T. Ferber, B. G. Fulsom, V. Gaur, N. Gabyshev, A. Garmash, R. Gillard, P. Goldenzweig, J. Haba, T. Hara, K. Hayasaka, W. -S. Hou, K. Inami, A. Ishikawa, R. Itoh, Y. Iwasaki, W. W. Jacobs, I. Jaegle, H. B. Jeon, Y. Jin, D. Joffe, K. K. Joo, T. Julius, K. H. Kang, G. Karyan, P. Katrenko, D. Y. Kim, H. J. Kim, J. B. Kim, K. T. Kim, M. J. Kim, S. H. Kim, Y. J. Kim, K. Kinoshita, P. Kodys, S. Korpar, D. Kotchetkov, P. Krizan, P. Krokovny, T. Kuhr, R. Kulasiri, A. Kuzmin, Y. -J. Kwon, J. S. Lange, L. Li, L. Li Gioi, J. Libby, D. Liventsev, M. Lubej, T. Luo, M. Masuda, T. Matsuda, D. Matvienko, K. Miyabayashi, H. Miyata, R. Mizuk, G. B. Mohanty, H. K. Moon, T. Mori, R. Mussa, E. Nakano, M. Nakao, T. Nanut, K. J. Nath, Z. Natkaniec, M. Nayak, M. Niiyama, N. K. Nisar, S. Nishida, S. Ogawa, S. Okuno, S. L. Olsen, H. Ono, P. Pakhlov, G. Pakhlova, B. Pal, S. Pardi, H. Park, S. Paul, R. Pestotnik, L. E. Piilonen, C. Pulvermacher, M. Ritter, H. Sahoo, Y. Sakai, M. Salehi, S. Sandilya, L. Santelj, T. Sanuki, O. Schneider, G. Schnell, C. Schwanda, Y. Seino, K. Senyo, O. Seon, M. E. Sevior, V. Shebalin, C. P. Shen, T. -A. Shibata, J. -G. Shiu, A. Sokolov, E. Solovieva, M. Staric, T. Sumiyoshi, M. Takizawa, U. Tamponi, K. Tanida, F. Tenchini, K. Trabelsi, M. Uchida, S. Uehara, T. Uglov, S. Uno, Y. Usov, C. Van Hulse, G. Varner, A. Vinokurova, A. Vossen, C. H. Wang, M. -Z. Wang, P. Wang, M. Watanabe, Y. Watanabe, E. Widmann, E. Won, H. Yamamoto, Y. Yamashita, H. Ye, C. Z. Yuan, Y. Yusa, Z. P. Zhang, V. Zhilich, V. Zhulanov, A. Zupanc

    PHYSICAL REVIEW D   95 ( 11 )   112003-1 - 112003-17   2017年6月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We perform a full amplitude analysis of the process e(+)e(-)-&gt; J/psi D (D) over bar, where D refers to either D-0 or D+. A new charmoniumlike state X*(3860) that decays to D (D) over bar is observed with a significance of 6.5 sigma. Its mass is (3862(-32)(+26) (+40)(-13) )MeV= c(2), and its width is (201(-67) (+154)(-82) (+88)) MeV. The J(PC) = 0(++) hypothesis is favored over the 2(++) hypothesis at the level of 2.5s. The analysis is based on the 980 fb(-1) data sample collected by the Belle detector at the asymmetric-energy e(+)e(-)collider KEKB.

    DOI: 10.1103/PhysRevD.95.112003

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  • Measurement of the tau Lepton Polarization and R(D*) in the Decay (B)over-bar -&gt; D* tau(-) (v)over-bar(tau) 査読

    S. Hirose, T. Iijima, I. Adachi, K. Adamczyk, H. Aihara, S. Al Said, D. M. Asner, H. Atmacan, V. Aulchenko, T. Aushev, R. Ayad, V. Babu, I. Badhrees, A. M. Bakich, V. Bansal, E. Barberio, P. Behera, M. Berger, B. Bhuyan, J. Biswal, A. Bondar, G. Bonvicini, A. Bozek, M. Bracko, T. E. Browder, D. Cervenkov, P. Chang, A. Chen, B. G. Cheon, K. Chilikin, R. Chistov, K. Cho, Y. Choi, D. Cinabro, M. Danilov, N. Dash, S. Di Carlo, J. Dingfelder, Z. Dolezal, Z. Drasal, D. Dutta, S. Eidelman, D. Epifanov, H. Farhat, J. E. Fast, T. Ferber, B. G. Fulsom, V. Gaur, N. Gabyshev, A. Garmash, P. Goldenzweig, B. Golob, D. Greenwald, J. Grygier, J. Haba, K. Hara, J. Hasenbusch, K. Hayasaka, H. Hayashii, T. Higuchi, W. -S. Hou, C. -L. Hsu, K. Inami, G. Inguglia, A. Ishikawa, R. Itoh, Y. Iwasaki, W. W. Jacobs, I. Jaegle, Y. Jin, D. Joffe, K. K. Joo, T. Julius, Y. Kato, T. Kawasaki, H. Kichimi, C. Kiesling, D. Y. Kim, J. B. Kim, K. T. Kim, M. J. Kim, S. H. Kim, K. Kinoshita, P. Kodys, S. Korpar, D. Kotchetkov, P. Krizan, P. Krokovny, T. Kuhr, R. Kulasiri, R. Kumar, Y. -J. Kwon, J. S. Lange, C. H. Li, L. Li, Y. Li, L. Li Gioi, J. Libby, D. Liventsev, M. Lubej, T. Luo, J. MacNaughton, M. Masuda, T. Matsuda, D. Matvienko, K. Miyabayashi, H. Miyake, H. Miyata, R. Mizuk, G. B. Mohanty, H. K. Moon, T. Mori, R. Mussa, M. Nakao, T. Nanut, K. J. Nath, Z. Natkaniec, M. Nayak, M. Niiyama, N. K. Nisar, S. Nishida, S. Ogawa, S. Okuno, H. Ono, Y. Onuki, W. Ostrowicz, P. Pakhlov, G. Pakhlova, B. Pal, C. W. Park, H. Park, S. Paul, L. Pesantez, R. Pestotnik, L. E. Piilonen, K. Prasanth, M. Ritter, A. Rostomyan, M. Rozanska, Y. Sakai, S. Sandilya, L. Santelj, T. Sanuki, Y. Sato, V. Savinov, T. Schlueter, O. Schneider, G. Schnell, C. Schwanda, Y. Seino, K. Senyo, O. Seon, M. E. Sevior, V. Shebalin, C. P. Shen, T. -A. Shibata, J. -G. Shiu, F. Simon, A. Sokolov, E. Solovieva, M. Staric, J. F. Strube, K. Sumisawa, T. Sumiyoshi, M. Takizawa, U. Tamponi, F. Tenchini, K. Trabelsi, M. Uchida, T. Uglov, Y. Unno, S. Uno, P. Urquijo, Y. Ushiroda, Y. Usov, C. Van Hulse, G. Varner, K. E. Varvell, A. Vossen, C. H. Wang, M. -Z. Wang, P. Wang, M. Watanabe, Y. Watanabe, E. Widmann, E. Won, Y. Yamashita, H. Ye, J. Yelton, C. Z. Yuan, Z. P. Zhang, V. Zhilich, V. Zhulanov, A. Zupanc

    PHYSICAL REVIEW LETTERS   118 ( 21 )   211801-1 - 211801-7   2017年5月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We report the first measurement of the tau lepton polarization P-tau(D*) in the decay (B) over bar -&gt; D* tau(-) (v) over bar (tau) as well as a newmeasurement of the ratio of the branching fractions R(D*) = B((B) over bar -&gt; D* tau(-) (v) over bar (tau)) / B((B) over bar -&gt; D* l(-) (v) over bar (l)), where l(-) denotes an electron or a muon, and the tau is reconstructed in the modes tau(-) -&gt; pi(-) v(tau) and tau(-) -&gt; rho(-) v(tau). We use the full data sample of 772 x 10(6) B (B) over bar pairs recorded with the Belle detector at the (KEKB) over bar electron-positron collider. Our results, P-tau(D*) = -0.38 +/- 0.51 (stat)(-0.16)(+0.21) (syst) and R(D*) = 0.270 +/- 0.035 (stat)(- 0.025)(+0.028) (syst), are consistent with the theoretical predictions of the standard model.

    DOI: 10.1103/PhysRevLett.118.211801

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  • First measurement of T-odd moments in D-0 -&gt; K-S(0) pi + pi(-)pi(0) decays 査読

    K. Prasanth, J. Libby, I. Adachi, H. Aihara, S. Al Said, D. M. Asner, V. Aulchenko, T. Aushev, R. Ayad, V. Babu, I. Badhrees, S. Bahinipati, A. M. Bakich, V. Bansal, E. Barberio, M. Berger, V. Bhardwaj, B. Bhuyan, J. Biswal, A. Bobrov, A. Bondar, G. Bonvicini, A. Bozek, M. Bracko, T. E. Browder, D. Cervenkov, V. Chekelian, A. Chen, B. G. Cheon, K. Chilikin, R. Chistov, K. Cho, S. -K. Choi, Y. Choi, D. Cinabro, N. Dash, S. Di Carlo, Z. Dolezal, Z. Drasal, D. Dutta, S. Eidelman, D. Epifanov, H. Farhat, J. E. Fast, T. Ferber, B. G. Fulsom, V. Gaur, N. Gabyshev, A. Garmash, R. Gillard, P. Goldenzweig, D. Greenwald, J. Haba, T. Hara, K. Hayasaka, M. T. Hedges, W. -S. Hou, K. Inami, A. Ishikawa, R. Itoh, Y. Iwasaki, W. W. Jacobs, I. Jaegle, H. B. Jeon, Y. Jin, D. Joffe, K. K. Joo, T. Julius, A. B. Kaliyar, K. H. Kang, G. Karyan, T. Kawasaki, C. Kiesling, D. Y. Kim, J. B. Kim, K. T. Kim, M. J. Kim, S. H. Kim, Y. J. Kim, K. Kinoshita, P. Kodys, S. Korpar, D. Kotchetkov, P. Krizan, P. Krokovny, T. Kuhr, R. Kulasiri, R. Kumar, T. Kumita, A. Kuzmin, Y. -J. Kwon, J. S. Lange, I. S. Lee, C. H. Li, L. Li, L. Li Gioi, D. Liventsev, M. Lubej, T. Luo, M. Masuda, T. Matsuda, D. Matvienko, K. Miyabayashi, H. Miyata, R. Mizuk, G. B. Mohanty, S. Mohanty, H. K. Moon, T. Mori, R. Mussa, K. R. Nakamura, M. Nakao, T. Nanut, K. J. Nath, Z. Natkaniec, M. Nayak, M. Niiyama, N. K. Nisar, S. Nishida, S. Ogawa, S. Okuno, H. Ono, P. Pakhlov, G. Pakhlova, B. Pal, C. -S. Park, H. Park, S. Paul, L. Pesantez, R. Pestotnik, L. E. Piilonen, C. Pulvermacher, M. Ritter, A. Rostomyan, Y. Sakai, M. Salehi, S. Sandilya, L. Santelj, T. Sanuki, Y. Sato, O. Schneider, G. Schnell, Schwanda, A. J. Schwartz, Y. Seino, K. Senyo, M. E. Sevior, V. Shebalin, C. P. Shen, T. -A. Shibata, J. -G. Shiu, B. Shwartz, F. Simon, R. Sinha, A. Sokolov, E. Solovieva, M. Staric, J. F. Strube, K. Sumisawa, T. Sumiyoshi, M. Takizawa, U. Tamponi, K. Tanida, F. Tenchini, K. Trabelsi, M. Uchida, S. Uehara, T. Uglov, Y. Unno, S. Uno, P. Urquijo, C. Van Hulse, G. Varner, A. Vinokurova, V. Vorobyev, A. Vossen, E. Waheed, C. H. Wang, M. -Z. Wang, P. Wang, M. Watanabe, Y. Watanabe, E. Widmann, K. M. Williams, E. Won, H. Yamamoto, Y. Yamashita, H. Ye, J. Yelton, Y. Yook, C. Z. Yuan, Y. Yusa, Z. P. Zhang, V. Zhilich, V. Zhukova, V. Zhulanov, A. Zupanc

    PHYSICAL REVIEW D   95 ( 9 )   091101-1 - 091101-8   2017年5月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We report the first measurement of the T-odd moments in the decay D-0 -&gt; K-S(0) pi + pi(-)pi(0) from a data sample corresponding to an integrated luminosity of 966 fb(-1) collected by the Belle experiment at the KEKB asymmetric-energy e(+)e(-) collider. From these moments we determine the CP-violation-sensitive asymmetry a(CP)(T-odd) = [-0.28 +/- 1.38 (stat.)(-0.76)(+0.23) (syst.)] x 10(-3) , which is consistent with no CP violation. In addition, we perform a(CP)(T-odd) measurements in different regions of the D-0 -&gt; K-S(0) pi + pi(-)pi(0) phase space; these are also consistent with no CP violation.

    DOI: 10.1103/PhysRevD.95.091101

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  • Lepton-Flavor-Dependent Angular Analysis of B -&gt; K*l(+)l(-) 査読

    S. Wehle, C. Niebuhr, S. Yashchenko, I. Adachi, H. Aihara, S. Al Said, D. M. Asner, V. Aulchenko, T. Aushev, R. Ayad, T. Aziz, V. Babu, A. M. Bakich, V. Bansal, E. Barberio, W. Bartel, P. Behera, B. Bhuyan, J. Biswal, A. Bobrov, A. Bondar, G. Bonvicini, A. Bozek, M. Bracko, T. E. Browder, D. Cervenkov, P. Chang, V. Chekelian, A. Chen, B. G. Cheon, K. Chilikin, R. Chistov, K. Cho, Y. Choi, D. Cinabro, N. Dash, J. Dingfelder, Z. Dolezal, Z. Drasal, D. Dutta, S. Eidelman, D. Epifanov, H. Farhat, J. E. Fast, T. Ferber, B. G. Fulsom, V. Gaur, N. Gabyshev, A. Garmash, R. Gillard, P. Goldenzweig, B. Golob, O. Grzymkowska, E. Guido, J. Haba, T. Hara, K. Hayasaka, H. Hayashii, M. T. Hedges, W. -S. Hou, C. -L. Hsu, T. Iijima, K. Inami, G. Inguglia, A. Ishikawa, R. Itoh, Y. Iwasaki, W. W. Jacobs, I. Jaegle, H. B. Jeon, Y. Jin, D. Joffe, K. K. Joo, T. Julius, A. B. Kaliyar, K. H. Kang, G. Karyan, P. Katrenko, T. Kawasaki, H. Kichimi, C. Kiesling, D. Y. Kim, H. J. Kim, J. B. Kim, K. T. Kim, M. J. Kim, S. H. Kim, K. Kinoshita, L. Koch, P. Kodys, S. Korpar, D. Kotchetkov, P. Krizan, P. Krokovny, T. Kuhr, R. Kulasiri, T. Kumita, A. Kuzmin, Y. -J. Kwon, J. S. Lange, C. H. Li, L. Li, Y. Li, L. Li Gioi, J. Libby, D. Liventsev, M. Lubej, T. Luo, M. Masuda, T. Matsuda, K. Miyabayashi, H. Miyake, R. Mizuk, G. B. Mohanty, T. Mori, R. Mussa, E. Nakano, M. Nakao, T. Nanut, K. J. Nath, Z. Natkaniec, M. Nayak, N. K. Nisar, S. Nishida, S. Ogawa, H. Ono, Y. Onuki, G. Pakhlova, B. Pal, C. -S. Park, C. W. Park, H. Park, S. Paul, L. Pesyntez, L. E. Piilonen, C. Pulvermacher, J. Rauch, M. Ritter, A. Rostomyan, Y. Sakai, S. Sandilya, L. Santelj, T. Sanuki, Y. Sato, V. Savinov, T. Schluter, O. Schneider, G. Schnell, C. Schwanda, A. J. Schwartz, Y. Seino, K. Senyo, O. Seon, I. S. Seong, M. E. Sevior, C. P. Shen, T. -A. Shibata, J. -G. Shiu, B. Shwartz, F. Simon, R. Sinha, E. Solovieva, M. Staric, J. F. Strube, K. Sumisawa, T. Sumiyoshi, M. Takizawa, U. Tamponi, F. Tenchini, K. Trabelsi, T. Tsuboyama, M. Uchida, T. Uglov, Y. Unno, S. Uno, P. Urquijo, Y. Ushiroda, Y. Usov, S. E. Vahsen, C. Van Hulse, G. Varner, K. E. Varvell, V. Vorobyev, A. Vossen, E. Waheed, C. H. Wang, M. -Z. Wang, P. Wang, M. Watanabe, Y. Watanabe, E. Widmann, K. M. Williams, E. Won, H. Yamamoto, Y. Yamashita, H. Ye, Y. Yook, C. Z. Yuan, Y. Yusa, Z. P. Zhang, V. Zhilich, V. Zhukova, V. Zhulanov, M. Ziegler, A. Zupanc

    PHYSICAL REVIEW LETTERS   118 ( 11 )   111801-1 - 111801-7   2017年3月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We present a measurement of angular observables and a test of lepton flavor universality in the B -&gt; K(+)l(+)l(-) decay, where l is either e or mu. The analysis is performed on a data sample corresponding to an integrated luminosity of 711 fb(-1) containing 772 x 10(6) B (B) over bar pairs, collected at the Upsilon(4S) resonance with the Belle detector at the asymmetric-energy e(+)e(-) collider KEKB. The result is consistent with standard model (SM) expectations, where the largest discrepancy from a SM prediction is observed in the muon modes with a local significance of 2.6 sigma.

    DOI: 10.1103/PhysRevLett.118.111801

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  • Erratum to: Search for B decays to final states with the eta (c) meson (vol 06, 132, 2015) 査読

    A. Vinokurova, A. Kuzmin, S. Eidelman, A. Abdesselam, I. Adachi, H. Aihara, K. Arinstein, D. M. Asner, T. Aushev, R. Ayad, A. M. Bakich, V. Bansal, V. Bhardwaj, B. Bhuyan, A. Bobrov, A. Bondar, A. Bozek, M. Bracko, T. E. Browder, V. Chekelian, B. G. Cheon, K. Chilikin, R. Chistov, K. Cho, S. -K. Choi, Y. Choi, D. Cinabro, J. Dingfelder, Z. Dolezal, Z. Drasal, A. Drutskoy, D. Dutta, D. Epifanov, H. Farhat, J. E. Fast, T. Ferber, V. Gaur, N. Gabyshev, A. Garmash, R. Gillard, Y. M. Goh, B. Golob, J. Haba, K. Hayasaka, H. Hayashii, X. H. He, W. -S. Hou, K. Inami, A. Ishikawa, R. Itoh, Y. Iwasaki, D. Joffe, T. Julius, K. H. Kang, E. Kato, C. Kiesling, D. Y. Kim, H. J. Kim, J. H. Kim, K. T. Kim, M. J. Kim, S. H. Kim, Y. J. Kim, K. Kinoshita, B. R. Ko, P. Kodys, S. Korpar, P. Krizan, P. Krokovny, T. Kuhr, T. Kumita, Y. -J. Kwon, J. S. Lange, L. Li Gioi, J. Libby, D. Liventsev, P. Lukin, D. Matvienko, K. Miyabayashi, H. Miyake, H. Miyata, G. B. Mohanty, A. Moll, T. Mori, R. Mussa, E. Nakano, M. Nakao, Z. Natkaniec, C. Ng, N. K. Nisar, S. Nishida, S. Ogawa, S. Okuno, S. L. Olsen, P. Pakhlov, G. Pakhlova, C. W. Park, H. Park, T. K. Pedlar, R. Pestotnik, M. Petric, L. E. Piilonen, E. Ribezl, M. Ritter, A. Rostomyan, Y. Sakai, S. Sandilya, D. Santel, L. Santelj, T. Sanuki, Y. Sato, V. Savinov, O. Schneider, G. Schnell, C. Schwanda, D. Semmler, K. Senyo, O. Seon, M. E. Sevior, V. Shebalin, C. P. Shen, T. -A. Shibata, J. -G. Shiu, B. Shwartz, A. Sibidanov, F. Simon, Y. -S. Sohn, A. Sokolov, E. Solovieva, S. Stanic, M. Staric, M. Steder, M. Sumihama, T. Sumiyoshi, U. Tamponi, G. Tatishvili, Y. Teramoto, M. Uchida, T. Uglov, Y. Unno, S. Uno, C. Van Hulse, P. Vanhoefer, G. Varner, V. Vorobyev, M. N. Wagne, C. H. Wang, M. -Z. Wang, P. Wang, Y. Watanabe, K. M. Williams, E. Won, J. Yamaoka, S. Yashchenko, Y. Yook, Z. P. Zhang, V. Zhulanov, A. Zupanc

    JOURNAL OF HIGH ENERGY PHYSICS   ( 2 )   02(2017)088   2017年2月

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    記述言語:英語   出版者・発行元:SPRINGER  

    DOI: 10.1007/JHEP02(2017)088

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  • Search for D-0 decays to invisible final states at Belle 査読

    Y. -T. Lai, M. -Z. Wang, I. Adachi, H. Aihara, S. Al Said, D. M. Asner, T. Aushev, R. Ayad, I. Badhrees, A. M. Bakich, V. Bansal, E. Barberio, M. Berger, V. Bhardwaj, B. Bhuyan, J. Biswal, A. Bobrov, A. Bozek, M. Bracko, D. Cervenkov, P. Chang, A. Chen, B. G. Cheon, K. Chilikin, R. Chistov, K. Cho, V. Chobanova, Y. Choi, D. Cinabro, N. Dash, S. Di Carlo, Z. Dolezal, D. Dutta, S. Eidelman, D. Epifanov, H. Farhat, J. E. Fast, T. Ferber, B. G. Fulsom, V. Gaur, N. Gabyshev, A. Garmash, R. Gillard, P. Goldenzweig, B. Golob, K. Hayasaka, W. -S. Hou, C. -L. Hsu, T. Iijima, K. Inami, G. Inguglia, A. Ishikawa, R. Itoh, Y. Iwasaki, W. W. Jacobs, I. Jaegle, H. B. Jeon, D. Joffe, K. K. Joo, T. Julius, K. H. Kang, T. Kawasaki, D. Y. Kim, J. B. Kim, K. T. Kim, M. J. Kim, S. H. Kim, Y. J. Kim, K. Kinoshita, P. Kodys, D. Kotchetkov, P. Krokovny, T. Kuhr, R. Kulasiri, Y. -J. Kwon, J. S. Lange, I. S. Lee, C. H. Li, L. Li, Y. Li, L. Li Gioi, J. Libby, D. Liventsev, M. Masuda, T. Matsuda, D. Matvienko, K. Miyabayashi, H. Miyata, R. Mizuk, G. B. Mohanty, S. Mohanty, E. Nakano, M. Nakao, H. Nakazawa, T. Nanut, K. J. Nath, Z. Natkaniec, M. Nayak, S. Nishida, S. Ogawa, S. Okuno, P. Pakhlov, B. Pal, H. Park, S. Paul, T. K. Pedlar, L. E. Piilonen, C. Pulvermacher, J. Rauch, M. Ritter, H. Sahoo, Y. Sakai, S. Sandilya, Y. Sato, V. Savinov, T. Schlueter, O. Schneider, G. Schnell, C. Schwanda, A. J. Schwartz, Y. Seino, D. Semmler, K. Senyo, I. S. Seong, V. Shebalin, C. P. Shen, T. -A. Shibata, J. -G. Shiu, F. Simon, E. Solovieva, M. Staric, J. Stypula, T. Sumiyoshi, M. Takizawa, U. Tamponi, F. Tenchini, K. Trabelsi, M. Uchida, S. Uehara, T. Uglov, Y. Unno, S. Uno, P. Urquijo, Y. Usov, C. Van Hulse, G. Varner, K. E. Varvell, V. Vorobyev, C. H. Wang, M. Watanabe, Y. Watanabe, E. Widmann, E. Won, Y. Yamashita, H. Ye, Y. Yook, C. Z. Yuan, Y. Yusa, Z. P. Zhang, V. Zhilich, V. Zhulanov, A. Zupanc

    PHYSICAL REVIEW D   95 ( 1 )   011102-1 - 011102-8   2017年1月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We report the result from the first search for D-0 decays to invisible final states. The analysis is performed on a data sample of 924 fb(-1) collected at and near the gamma(4S) and gamma(5S) resonances with the Belle detector at the KEKB asymmetric-energy e(|) e(-) collider. The absolute branching fraction is determined using an inclusive D-0 sample, obtained by fully reconstructing the rest of the particle system including the other charmed particle. No significant signal yield is observed and an upper limit of 9.4 x 10(-5) is set on the branching fraction of D-0 to invisible final states at 90% confidence level.

    DOI: 10.1103/PhysRevD.95.011102

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  • Observation of D-0 -&gt; rho(0)gamma and Search for CP Violation in Radiative Charm Decays 査読

    T. Nanut, A. Zupanc, I. Adachi, H. Aihara, S. Al Said, D. M. Asner, V. Aulchenko, T. Aushev, R. Ayad, V. Babu, I. Badhrees, A. M. Bakich, V. Bansal, P. Behera, V. Bhardwaj, J. Biswal, A. Bondar, A. Bozek, M. Bracko, T. E. Browder, D. Cervenkov, V. Chekelian, A. Chen, B. G. Cheon, R. Chistov, K. Cho, S. -K. Choi, Y. Choi, D. Cinabro, N. Dash, S. Di Carlo, Z. Dolezal, D. Dutta, S. Eidelman, H. Farhat, J. E. Fast, T. Ferber, B. G. Fulsom, V. Gaur, N. Gabyshev, A. Garmash, R. Gillard, P. Goldenzweig, B. Golob, K. Hayasaka, H. Hayashii, W. -S. Hou, T. Iijima, K. Inami, G. Inguglia, A. Ishikawa, Y. Iwasaki, W. W. Jacobs, I. Jaegle, D. Joffe, K. K. Joo, T. Julius, A. B. Kaliyar, K. H. Kang, T. Kawasaki, D. Y. Kim, J. B. Kim, K. T. Kim, M. J. Kim, S. H. Kim, K. Kinoshita, P. Kodys, S. Korpar, P. Krokovny, T. Kuhr, R. Kulasiri, A. Kuzmin, Y. -J. Kwon, J. S. Lange, I. S. Lee, C. H. Li, L. Li, Y. Li, L. Li Gioi, J. Libby, D. Liventsev, M. Lubej, M. Masuda, T. Matsuda, D. Matvienko, K. Miyabayashi, H. Miyata, R. Mizuk, G. B. Mohanty, H. K. Moon, M. Nakao, K. J. Nath, M. Nayak, N. K. Nisar, S. Nishida, S. Ogawa, S. Okuno, P. Pakhlov, G. Pakhlova, B. Pal, C. -S. Park, C. W. Park, H. Park, S. Paul, T. K. Pedlar, L. Pesantez, R. Pestotnik, M. Petric, L. E. Piilonen, K. Prasanth, C. Pulvermacher, J. Rauch, M. Ritter, A. Rostomyan, Y. Sakai, S. Sandilya, L. Santelj, T. Sanuki, Y. Sato, V. Savinov, T. Schulter, O. Schneider, G. Schnell, C. Schwanda, A. J. Schwartz, Y. Seino, K. Senyo, O. Seon, M. E. Sevior, V. Shebalin, C. P. Shen, T. -A. Shibata, J. -G. Shiu, B. Shwartz, E. Solovieva, S. Stanic, M. Staric, J. F. Strube, J. Stypula, T. Sumiyoshi, M. Takizawa, U. Tamponi, F. Tenchini, K. Trabelsi, M. Uchida, S. Uno, Y. Ushiroda, G. Varner, A. Vinokurova, V. Vorobyev, A. Vossen, C. H. Wang, M. -Z. Wang, P. Wang, Y. Watanabe, E. Widmann, E. Won, J. Yamaoka, Y. Yamashita, J. Yelton, Z. P. Zhang, V. Zhilich, V. Zhukova, V. Zhulanov

    PHYSICAL REVIEW LETTERS   118 ( 5 )   051801-1 - 051801-8   2017年1月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We report the first observation of the radiative charm decay D-0 -&gt; rho(0)gamma and the first search for CP violation in decays D-0 -&gt; rho(0)gamma, phi gamma, and (K) over bar (*0)(892)gamma, using a data sample of 943 fb(-1) collected with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. The branching fraction is measured to be B(D-0 -&gt; rho(0)gamma) = (1.77 +/- 0.30 +/- 0.07) x 10(-5), where the first uncertainty is statistical and the second is systematic. The obtained CP asymmetries A(CP)(D-0 -&gt;rho(0)gamma) = +0.056 +/- 0.152 +/- 0.006, A(CP)(D-0 -&gt; phi gamma) = -0.094 +/- 0.066 +/- 0.001, and A(CP)(D-0 -&gt; (K) over bar (*0) gamma = -0.003 +/- 0.020 +/- 0.000 are consistent with no CP violation. We also present an improved measurement of the branching fractions B(D-0 -&gt; phi gamma) = (2.76 +/- 0.19 +/- 0.10) x 10(-5) and B(D-0 -&gt; (K) over bar (*0) gamma = (4.66 +/- 0.21 +/- 0.21) x 10(-4).

    DOI: 10.1103/PhysRevLett.118.051801

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  • Search for the 0(--) glueball in Upsilon(1S) and Upsilon(2S) decays 査読

    S. Jia, C. P. Shen, C. Z. Yuan, I. Adachi, H. Aihara, S. Al Said, D. M. Asner, T. Aushev, R. Ayad, V. Babu, I. Badhrees, A. M. Bakich, V. Bansal, E. Barberio, P. Behera, B. Bhuyan, J. Biswal, G. Bonvicini, A. Bozek, M. Bracko, T. E. Browder, D. Cervenkov, P. Chang, V. Chekelian, A. Chen, B. G. Cheon, K. Chilikin, K. Cho, S. -K. Choi, Y. Choi, D. Cinabro, N. Dash, S. Di Carlo, Z. Dolezal, Z. Drasal, D. Dutta, S. Eidelman, H. Farhat, J. E. Fast, T. Ferber, B. G. Fulsom, V. Gaur, N. Gabyshev, A. Garmash, R. Gillard, P. Goldenzweig, B. Golob, J. Haba, T. Hara, K. Hayasaka, H. Hayashii, M. T. Hedges, W. -S. Hou, T. Iijima, K. Inami, G. Inguglia, A. Ishikawa, R. Itoh, I. Jaegle, D. Joffe, K. K. Joo, T. Julius, K. H. Kang, P. Katrenko, T. Kawasaki, H. Kichimi, C. Kiesling, D. Y. Kim, H. J. Kim, J. B. Kim, K. T. Kim, M. J. Kim, S. H. Kim, Y. J. Kim, P. Kodys, S. Korpar, D. Kotchetkov, P. Krizan, P. Krokovny, T. Kuhr, R. Kulasiri, A. Kuzmin, Y. -J. Kwon, J. S. Lange, C. H. Li, L. Li, Y. Li, L. Li Gioi, J. Libby, D. Liventsev, M. Lubej, T. Luo, M. Masuda, T. Matsuda, D. Matvienko, K. Miyabayashi, H. Miyata, R. Mizuk, H. K. Moon, T. Mori, M. Nakao, T. Nanut, K. J. Nath, Z. Natkaniec, M. Nayak, M. Niiyama, N. K. Nisar, S. Nishida, S. Ogawa, S. Okuno, H. Ono, Y. Onuki, W. Ostrowicz, G. Pakhlova, B. Pal, C. -S. Park, H. Park, R. Pestotnik, L. E. Piilonen, C. Pulvermacher, M. Ritter, A. Rostomyan, Y. Sakai, S. Sandilya, L. Santelj, T. Sanuki, V. Savinov, O. Schneider, G. Schnell, C. Schwanda, Y. Seino, K. Senyo, M. E. Sevior, V. Shebalin, T. -A. Shibata, J. -G. Shiu, B. Shwartz, F. Simon, A. Sokolov, E. Solovieva, M. Staric, J. F. Strube, M. Sumihama, T. Sumiyoshi, K. Suzuki, M. Takizawa, U. Tamponi, K. Tanida, F. Tenchini, M. Uchida, T. Uglov, Y. Unno, S. Uno, P. Urquijo, Y. Usov, C. Van Hulse, G. Varner, V. Vorobyev, C. H. Wang, M. -Z. Wang, P. Wang, Y. Watanabe, E. Widmann, E. Won, Y. Yamashita, H. Ye, J. Yelton, Z. P. Zhang, V. Zhilich, V. Zhukova, V. Zhulanov, A. Zupanc

    PHYSICAL REVIEW D   95 ( 1 )   012001-1 - 012001-13   2017年1月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We report the first search for the J(PC) = 0(--) glueball in Upsilon(1S) and Upsilon(2S) decays with data samples of (102 +/- 2) x 10(6) and (158 +/- 4) x 10(6) events, respectively, collected with the Belle detector. No significant signals are observed in any of the proposed production modes, and the 90% credibility level upper limits on their branching fractions in Upsilon(1S) and Upsilon(2S) decays are obtained. The inclusive branching fractions of the Upsilon(1S) and Upsilon(2S) decays into final states with chi(c1) are measured to be B(Upsilon(1S) -&gt; chi(c1) + anything) = (1.90 +/- 0.43(stat) +/- 0.14(syst) x 10(-4) with an improved precision over prior measurements and B Upsilon(2S) -&gt; chi(c1) + anything) = (2.24 +/- 0.44(stat) +/- 0.20(syst) x 10(-4) for the first time.

    DOI: 10.1103/PhysRevD.95.012001

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  • Search for a dark vector gauge boson decaying to pi(+)pi(-) using eta -&gt;pi(+)pi(-) gamma decays 査読

    E. Won, I. Adachi, H. Aihara, S. Al Said, D. M. Asner, T. Aushev, R. Ayad, I. Badhrees, A. M. Bakich, V. Bansal, E. Barberio, P. Behera, B. Bhuyan, J. Biswal, A. Bobrov, A. Bozek, M. Bracko, D. Cervenkov, V. Chekelian, A. Chen, B. G. Cheon, K. Chilikin, R. Chistov, K. Cho, V. Chobanova, Y. Choi, D. Cinabro, N. Dash, S. Di Carlo, Z. Dolezal, Z. Drsal, D. Dutta, S. Eidelman, D. Epifanov, H. Farhat, J. E. Fast, T. Ferber, B. G. Fulsom, V. Gaur, N. Gabyshev, A. Garmash, R. Gillard, P. Goldenzweig, D. Greenwald, J. Haba, K. Hayasaka, H. Hayashii, W. -S. Hou, T. Iijima, K. Inami, G. Inguglia, A. Ishikawa, R. Itoh, Y. Iwasaki, I. Jaegle, H. B. Jeon, D. Joffe, K. K. Joo, T. Julius, K. H. Kang, T. Kawasaki, D. Y. Kim, J. B. Kim, K. T. Kim, M. J. Kim, S. H. Kim, Y. J. Kim, K. Kinoshita, P. Kodys, P. Krizan, P. Krokovny, T. Kuhr, R. Kulasiri, Y. -J. Kwon, J. S. Lange, I. S. Lee, C. H. Li, L. Li, Y. Li, L. Li Gioi, J. Libby, D. Liventsev, T. Luo, M. Masuda, T. Matsuda, D. Matvienko, K. Miyabayashi, H. Miyata, R. Mizuk, G. B. Mohanty, E. Nakano, M. Nakao, H. Nakazawa, T. Nanut, K. J. Nath, Z. Natkaniec, M. Nayak, S. Nishida, S. Ogawa, S. Okuno, P. Pakhlov, B. Pal, C. -S. Park, S. Paul, T. K. Pedlar, L. E. Piilonen, C. Pulvermacher, J. Rauch, M. Ritter, H. Sahoo, Y. Sakai, S. Sandilya, L. Santelj, T. Sanuki, Y. Sato, V. Savinov, T. Schluter, O. Schneider, G. Schnell, C. Schwanda, Y. Seino, D. Semmler, K. Senyo, O. Seon, I. S. Seong, V. Shebalin, C. P. Shen, T. -A. Shibata, J. -G. Shiu, F. Simon, M. Staric, T. Sumiyoshi, M. Takizawa, U. Tamponi, F. Tenchini, K. Trabelsi, M. Uchida, S. Uehara, T. Uglov, Y. Unno, S. Uno, P. Urquijo, Y. Usov, C. Van Hulse, G. Varner, K. E. Varvell, V. Vorobyev, C. H. Wang, M. -Z. Wang, M. Watanabe, Y. Watanabe, E. Widmann, J. Yamaoka, H. Ye, Y. Yook, C. Z. Yuan, Y. Yusa, Z. P. Zhang, V. Zhilich, V. Zhukova, V. Zhulanov, A. Zupanc

    PHYSICAL REVIEW D   94 ( 9 )   092006-1 - 092006-6   2016年11月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We report a search for a dark vector gauge boson U' that couples to quarks in the decay chain D*(+) -&gt; D-0 pi(+), D-0 -&gt; K-S(0) eta, eta -&gt; U'gamma, U' -&gt; pi(+)pi- No signal is found and we set a mass-dependent limit on the baryonic fine structure constant of 10(-3)-10(-2) in the U' mass range of 290 to 520 MeV/c(2). This analysis is based on a data sample of 976 fb(-1) collected by the Belle experiment at the KEKB asymmetric-energy e(+)e(-) collider.

    DOI: 10.1103/PhysRevD.94.092006

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  • Measurement of the branching ratio of ${\overline{B } }^{0}{\rightarrow}{D}^{*+}{ { \tau } }^{ { - } }{\overline{ { \nu } } }_{ { \tau } }$ relative to ${\overline{B } }^{0}{\rightarrow}{D}^{*+}{ { \ell } }^{ { - } }{\overline{ { \nu } } }_{ { \ell } }$ decays with a semileptonic tagging meth 査読

    The Belle collaboration, K, Hayasaka は

    Phys. Rev. D   94 ( 7 )   072007-1 - 072007-12   2016年10月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.1103/PhysRevD.94.072007

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  • Measurement of the branching ratio of (B)over-bar(0) -&gt; D*(+)tau(-)(nu)over-bar(tau) relative to (B)over-bar(0) -&gt; D*(+)l(-)(nu)over-bar(l) decays with a semileptonic tagging method 査読

    Y. Sato, T. Iijima, K. Adamczyk, H. Aihara, D. M. Asner, H. Atmacan, T. Aushev, R. Ayad, T. Aziz, V. Babu, I. Badhrees, A. M. Bakich, V. Bansal, P. Behera, V. Bhardwaj, B. Bhuyan, J. Biswal, G. Bonvicini, A. Bozek, M. Bracko, D. Cervenkov, P. Chang, V. Chekelian, A. Chen, B. G. Cheon, K. Chilikin, R. Chistov, K. Cho, V. Chobanova, Y. Choi, D. Cinabro, M. Danilov, N. Dash, S. Di Carlo, Z. Dolezal, D. Dutta, S. Eidelman, D. Epifanov, H. Farhat, J. E. Fast, T. Ferber, B. G. Fulsom, V. Gaur, N. Gabyshev, A. Garmash, P. Goldenzweig, B. Golob, D. Greenwald, K. Hara, T. Hara, J. Hasenbusch, K. Hayasaka, H. Hayashii, S. Hirose, T. Horiguchi, W. -S. Hou, K. Inami, A. Ishikawa, R. Itoh, Y. Iwasaki, I. Jaegle, H. B. Jeon, D. Joffe, T. Julius, K. H. Kang, Y. Kato, P. Katrenko, T. Kawasaki, D. Y. Kim, J. B. Kim, K. T. Kim, M. J. Kim, S. H. Kim, Y. J. Kim, K. Kinoshita, P. Kodys, S. Korpar, D. Kotchetkov, P. Krokovny, T. Kuhr, R. Kumar, Y. -J. Kwon, J. S. Lange, C. H. Li, L. Li, Y. Li, L. Li Gioi, J. Libby, D. Liventsev, T. Luo, M. Masuda, T. Matsuda, D. Matvienko, K. Miyabayashi, H. Miyata, R. Mizuk, G. B. Mohanty, A. Moll, H. K. Moon, K. R. Nakamura, E. Nakano, M. Nakao, T. Nanut, K. J. Nath, Z. Natkaniec, M. Nayak, K. Negishi, N. K. Nisar, S. Nishida, S. Ogawa, S. Okuno, S. L. Olsen, Y. Onuki, P. Pakhlov, G. Pakhlova, B. Pal, C. -S. Park, S. Paul, T. K. Pedlar, L. Pesantez, R. Pestotnik, M. Petric, L. E. Piilonen, M. V. Purohit, J. Rauch, A. Rostomyan, M. Rozanska, Y. Sakai, S. Sandilya, L. Santelj, V. Savinov, T. Schlueter, O. Schneider, G. Schnell, C. Schwanda, A. J. Schwartz, Y. Seino, K. Senyo, O. Seon, M. E. Sevior, V. Shebalin, C. P. Shen, T. -A. Shibata, J. -G. Shiu, B. Shwartz, F. Simon, E. Solovieva, S. Stanic, M. Staric, J. F. Strube, T. Sumiyoshi, M. Takizawa, U. Tamponi, F. Tenchini, K. Trabelsi, M. Uchida, S. Uno, P. Urquijo, Y. Ushiroda, Y. Usov, C. Van Hulse, G. Varner, A. Vinokurova, V. Vorobyev, C. H. Wang, M. -Z. Wang, P. Wang, Y. Watanabe, K. M. Williams, E. Won, H. Yamamoto, J. Yamaoka, Y. Yamashita, J. Yelton, Y. Yook, C. Z. Yuan, Y. Yusa, Z. P. Zhang, V. Zhilich, V. Zhukova, V. Zhulanov, A. Zupanc

    PHYSICAL REVIEW D   94 ( 7 )   2016年10月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We report a measurement of the ratio R(D*) = B((B) over bar (0) -&gt; D*(+)tau(-)(nu) over bar (tau))/B((B) over bar (0) -&gt; D*(+)l(-)(nu) over bar (l))where l denotes an electron or a muon. The results are based on a data sample containing 772 x 10(6) B (B) over bar pairs recorded at the Upsilon(4S) resonance with the Belle detector at the KEKB e(+)e(-) collider. We select a sample of B-0(B) over bar (0) pairs by reconstructing both B mesons in semileptonic decays to D*(-/+)l(+/-). We measure R(D*) = 0.302 +/- 0.030(stat) +/- 0.011(syst), which is within 1.6 sigma of the Standard Model theoretical expectation, where the standard deviation sigma includes systematic uncertainties. We use this measurement to constrain several scenarios of new physics in a model-independent approach.

    DOI: 10.1103/PhysRevD.94.072007

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  • Evidence for the decay B0 →ηπ0 査読

    B. Pal, A. J. Schwartz, A. Abdesselam, I. Adachi, I. Adachi, H. Aihara, S. Al Said, S. Al Said, K. Arinstein, D. M. Asner, V. Aulchenko, T. Aushev, T. Aushev, R. Ayad, V. Babu, I. Badhrees, I. Badhrees, A. M. Bakich, A. Bobrov, G. Bonvicini, A. Bozek, M. Bračko, M. Bračko, T. E. Browder, D. Červenkov, M. C. Chang, V. Chekelian, A. Chen, B. G. Cheon, K. Cho, V. Chobanova, Y. Choi, D. Cinabro, J. Dalseno, J. Dalseno, Z. Doležal, Z. Drásal, A. Drutskoy, A. Drutskoy, D. Dutta, S. Eidelman, H. Farhat, J. E. Fast, T. Ferber, O. Frost, B. G. Fulsom, V. Gaur, N. Gabyshev, S. Ganguly, A. Garmash, D. Getzkow, R. Gillard, R. Glattauer, Y. M. Goh, B. Golob, B. Golob, O. Grzymkowska, T. Hara, T. Hara, K. Hayasaka, H. Hayashii, X. H. He, W. S. Hou, M. Huschle, H. J. Hyun, T. Iijima, T. Iijima, A. Ishikawa, R. Itoh, R. Itoh, Y. Iwasaki, I. Jaegle, T. Julius, K. H. Kang, E. Kato, C. Kiesling, D. Y. Kim, J. B. Kim, J. H. Kim, K. T. Kim, M. J. Kim, S. H. Kim, Y. J. Kim, K. Kinoshita, B. R. Ko, P. Kodyš, S. Korpar, S. Korpar, P. Križan, P. Križan, P. Krokovny, T. Kuhr, T. Kumita, A. Kuzmin, Y. J. Kwon, J. S. Lange, D. H. Lee, I. S. Lee, Y. Li, L. Li Gioi

    Physical Review D - Particles, Fields, Gravitation and Cosmology   92 ( 1 )   2016年9月

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    © 2015 American Physical Society. © 2015 American Physical Society. We report a search for the charmless hadronic decay B0→ηπ0 with a data sample corresponding to an integrated luminosity of 694 fb-1 containing 753×106 BB¯ pairs. The data were collected by the Belle experiment running on the Y(4S) resonance at the KEKB e+e- collider. We measure a branching fraction B(B0→ηπ0)=(4.1-1.5-0.7+1.7+0.5)×10-7, where the first uncertainty is statistical and the second is systematic. Our measurement gives an upper limit of B(B0→ηπ0)&lt;6.5×10-7 at 90% confidence level. The signal has a significance of 3.0 standard deviations and constitutes the first evidence for this decay mode.

    DOI: 10.1103/PhysRevD.92.011101

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  • Study of excited Xi(c) states decaying into Xi(0)(c) and Xi(+)(c) baryons 査読

    J. Yelton, I. Adachi, H. Aihara, D. M. Asner, V. Aulchenko, T. Aushev, R. Ayad, I. Badhrees, S. Bahinipati, A. M. Bakich, E. Barberio, P. Behera, B. Bhuyan, J. Biswal, G. Bonvicini, A. Bozek, M. Bracko, T. E. Browder, D. Cervenkov, A. Chen, B. G. Cheon, K. Chilikin, K. Cho, Y. Choi, D. Cinabro, M. Danilov, N. Dash, S. Di Carlo, Z. Dolezal, Z. Drasal, D. Dutta, S. Eidelman, H. Farhat, J. E. Fast, T. Ferber, B. G. Fulsom, V. Gaur, N. Gabyshev, A. Garmash, R. Gillard, P. Goldenzweig, T. Hara, K. Hayasaka, H. Hayashii, W. -S. Hou, G. Inguglia, A. Ishikawa, R. Itoh, Y. Iwasaki, W. W. Jacobs, H. B. Jeon, D. Joffe, K. K. Joo, T. Julius, K. H. Kang, E. Kato, Y. Kato, D. Y. Kim, J. B. Kim, K. T. Kim, S. H. Kim, K. Kinoshita, P. Kodys, S. Korpar, D. Kotchetkov, P. Krizan, P. Krokovny, T. Kumita, A. Kuzmin, Y. -J. Kwon, J. S. Lange, C. H. Li, H. Li, L. Li, Y. Li, J. Libby, D. Liventsev, M. Lubej, T. Luo, M. Masuda, T. Matsuda, D. Matvienko, K. Miyabayashi, H. Miyata, R. Mizuk, G. B. Mohanty, A. Moll, H. K. Moon, T. Nanut, K. J. Nath, M. Nayak, K. Negishi, M. Niiyama, S. Nishida, S. Ogawa, S. Okuno, P. Pakhlov, G. Pakhlova, B. Pal, C. -S. Park, H. Park, S. Paul, T. K. Pedlar, R. Pestotnik, L. E. Piilonen, C. Pulvermacher, M. Ritter, A. Rostomyan, Y. Sakai, S. Sandilya, L. Santelj, T. Sanuki, V. Savinov, T. Schlueter, O. Schneider, G. Schnell, C. Schwanda, Y. Seino, K. Senyo, O. Seon, M. E. Sevior, V. Shebalin, C. P. Shen, T. -A. Shibata, J. -G. Shiu, A. Sokolov, E. Solovieva, S. Stanic, M. Staric, J. F. Strube, M. Sumihama, T. Sumiyoshi, M. Takizawa, U. Tamponi, K. Tanida, F. Tenchini, M. Uchida, T. Uglov, S. Uno, P. Urquijo, Y. Usov, C. Van Hulse, G. Varner, A. Vinokurova, C. H. Wang, M. -Z. Wang, P. Wang, Y. Watanabe, E. Widmann, K. M. Williams, E. Won, C. Z. Yuan, Z. P. Zhang, V. Zhilich, V. Zhukova, V. Zhulanov, A. Zupanc

    PHYSICAL REVIEW D   94 ( 5 )   052011-1 - 052011-14   2016年9月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    Using a data sample of 980 fb(-1) of e(+)e(-) annihilation data taken with the Belle detector operating at the KEKB asymmetric-energy e(+)e(-) collider, we report the results of a study of excited Xi(c) states that decay, via the emission of photons and/or charged pions, into Xi(0)(c) or Xi(+)(c) ground state charmed-strange baryons. We present new measurements of the masses of all members of the Xi(0)(c), Xi(c)(2645), Xi(c)(2790), Xi(c)(2815), and Xi(c)(2980) isodoublets, measurements of the intrinsic widths of those that decay strongly, and evidence of previously unknown transitions.

    DOI: 10.1103/PhysRevD.94.052011

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  • Measurement of the CKM angle phi(1) in B-0 -&gt; (D)over-bar(*)(0)h(0), (D)over-bar(0) -&gt; K-S(0)pi(+)pi(-) decays with time-dependent binned Dalitz plot analysis 査読

    V. Vorobyev, I. Adachi, H. Aihara, D. M. Asner, T. Aushev, R. Ayad, I. Badhrees, S. Bahinipati, A. M. Bakich, P. Behera, V. Bhardwaj, B. Bhuyan, J. Biswal, A. Bobrov, A. Bondar, A. Bozek, M. Bracko, T. E. Browder, D. Cervenkov, V. Chekelian, A. Chen, B. G. Cheon, K. Chilikin, R. Chistov, K. Cho, V. Chobanova, Y. Choi, D. Cinabro, M. Danilov, N. Dash, S. Di Carlo, Z. Dolezal, Z. Drasal, A. Drutskoy, D. Dutta, S. Eidelman, D. Epifanov, H. Farhat, J. E. Fast, T. Ferber, B. G. Fulsom, V. Gaur, N. Gabyshev, A. Garmash, P. Goldenzweig, D. Greenwald, J. Haba, K. Hayasaka, H. Hayashii, W. -S. Hou, K. Inami, G. Inguglia, A. Ishikawa, R. Itoh, Y. Iwasaki, W. W. Jacobs, I. Jaegle, D. Joffe, K. K. Joo, T. Julius, K. H. Kang, C. Kiesling, D. Y. Kim, H. J. Kim, J. B. Kim, K. T. Kim, S. H. Kim, K. Kinoshita, P. Kodys, D. Kotchetkov, P. Krizan, P. Krokovny, R. Kumar, T. Kumita, Y. -J. Kwon, J. S. Lange, C. H. Li, H. Li, L. Li, Y. Li, J. Libby, D. Liventsev, M. Lubej, M. Masuda, T. Matsuda, D. Matvienko, K. Miyabayashi, H. Miyata, R. Mizuk, G. B. Mohanty, A. Moll, H. K. Moon, R. Mussa, M. Nakao, T. Nanut, K. J. Nath, M. Nayak, K. Negishi, S. Nishida, S. Ogawa, S. Okuno, P. Pakhlov, G. Pakhlova, B. Pal, C. -S. Park, C. W. Park, H. Park, S. Paul, T. K. Pedlar, R. Pestotnik, M. Petric, L. E. Piilonen, J. Rauch, M. Ritter, Y. Sakai, S. Sandilya, T. Sanuki, V. Savinov, T. Schlueter, O. Schneider, G. Schnell, C. Schwanda, A. J. Schwartz, Y. Seino, K. Senyo, M. E. Sevior, V. Shebalin, C. P. Shen, T. -A. Shibata, J. -G. Shiu, B. Shwartz, F. Simon, A. Sokolov, E. Solovieva, M. Staric, J. F. Strube, T. Sumiyoshi, M. Takizawa, F. Tenchini, K. Trabelsi, M. Uchida, T. Uglov, S. Uno, P. Urquijo, Y. Usov, C. Van Hulse, P. Vanhoefer, G. Varner, K. E. Varvell, A. Vinokurova, C. H. Wang, M. -Z. Wang, P. Wang, Y. Watanabe, K. M. Williams, E. Won, J. Yamaoka, Y. Yamashita, S. Yashchenko, J. Yelton, Z. P. Zhang, V. Zhilich, V. Zhukova, V. Zhulanov, A. Zupanc

    PHYSICAL REVIEW D   94 ( 5 )   052004   2016年9月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We report a measurement of the CP-violation parameter phi(1) obtained in a time-dependent analysis of B-0 -&gt; (D) over bar(*)(0)h(0) decays followed by (D) over bar (0) -&gt; K-S(0)pi(+)pi decay. A model-independent measurement is performed using the binned Dalitz plot technique. The measured value is phi(1) = 11.7 degrees +/- 7.8 degrees(stat) +/- 2.1 degrees (syst). Treating sin 2 phi(1) and cos 2 phi(1) as independent parameters, we obtain sin 2 phi(1) = 0.43 +/- 0.27(stat) +/- 0.08(syst) and cos 2 phi(1) = 1.06 +/- 0.33(stat)(-0.15)(+0.21)(syst). The results are obtained with a full data sample of 772 x 10(6)B (B) over bar pairs collected near the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider.

    DOI: 10.1103/PhysRevD.94.052004

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  • Measurement of the CKM angle ${ { \varphi } }_{1}$ in ${B}^{0}{\rightarrow}{\overline{D } }^{(*)0}{h}^{0}$, ${\overline{D } }^{0}{\rightarrow}{K}_{S}^{0}{ { \pi } }^{+}{ { \pi } }^{ { - } }$ decays with time-dependent binned Dalitz plot analysis 査読

    The Belle collaboration, K, Hayasaka は

    Phys. Rev. D   94 ( 5 )   052004-1 - 052004-15   2016年9月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.1103/PhysRevD.94.052004

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  • Energy Scan of the e(+)e(-) -&gt; h(b)(nP)pi(+)pi(-) (n=1, 2) Cross Sections and Evidence for gamma(11020) Decays into Charged Bottomoniumlike States 査読

    R. Mizuk, A. Bondar, I. Adachi, H. Aihara, D. M. Asner, H. Atmacan, V. Aulchenko, T. Aushev, R. Ayad, I. Badhrees, A. M. Bakich, E. Barberio, P. Behera, V. Bhardwaj, B. Bhuyan, J. Biswal, A. Bobrov, G. Bonvicini, A. Bozek, M. Bracko, T. E. Browder, D. Cervenkov, V. Chekelian, A. Chen, B. G. Cheon, K. Chilikin, R. Chistov, V. Chobanova, S. -K. Choi, Y. Choi, D. Cinabro, J. Dalseno, M. Danilov, N. Dash, Z. Dolezal, A. Drutskoy, S. Eidelman, D. Epifanov, T. Ferber, B. G. Fulsom, V. Gaur, A. Garmash, R. Gillard, Y. M. Goh, P. Goldenzweig, B. Golob, D. Greenwald, T. Hara, K. Hayasaka, H. Hayashii, W. -S. Hou, C. -L. Hsu, K. Inami, G. Inguglia, A. Ishikawa, Y. Iwasaki, I. Jaegle, T. Julius, K. H. Kang, P. Katrenko, D. Y. Kim, H. J. Kim, J. B. Kim, K. T. Kim, M. J. Kim, S. H. Kim, Y. J. Kim, K. Kinoshita, P. Kodys, S. Korpar, D. Kotchetkov, P. Krokovny, T. Kuhr, A. Kuzmin, Y. -J. Kwon, J. S. Lange, C. H. Li, H. Li, L. Li, L. Li Gioi, J. Libby, D. Liventsev, M. Lubej, T. Luo, M. Masuda, T. Matsuda, D. Matvienko, K. Miyabayashi, H. Miyata, G. B. Mohanty, A. Moll, E. Nakano, M. Nakao, T. Nanut, K. J. Nath, K. Negishi, M. Niiyama, N. K. Nisar, S. Nishida, S. Ogawa, S. Okuno, S. L. Olsen, Y. Onuki, P. Pakhlov, G. Pakhlova, B. Pal, C. W. Park, H. Park, S. Paul, T. K. Pedlar, R. Pestotnik, M. Petric, L. E. Piilonen, C. Pulvermacher, M. Ritter, Y. Sakai, S. Sandilya, T. Sanuki, V. Savinov, T. Schlueter, O. Schneider, G. Schnell, C. Schwanda, Y. Seino, D. Semmler, K. Senyo, O. Seon, M. E. Sevior, V. Shebalin, T. -A. Shibata, J. -G. Shiu, B. Shwartz, F. Simon, E. Solovieva, M. Staric, J. Stypula, T. Sumiyoshi, M. Takizawa, U. Tamponi, K. Tanida, Y. Teramoto, I. Tikhomirov, K. Trabelsi, M. Uchida, T. Uglov, Y. Unno, S. Uno, P. Urquijo, Y. Usov, C. Van Hulse, G. Varner, V. Vorobyev, C. H. Wang, M. -Z. Wang, P. Wang, X. L. Wang, Y. Watanabe, K. M. Williams, E. Won, J. Yamaoka, Y. Yamashita, J. Yelton, C. Z. Yuan, Z. P. Zhang, V. Zhilich, V. Zhukova, V. Zhulanov, A. Zupanc

    PHYSICAL REVIEW LETTERS   117 ( 14 )   142001-1 - 142001-7   2016年9月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    Using data collected with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider, we measure the energy dependence of the e(+)e(-) -&gt; h(b)(nP)pi(+)pi(-) (n = 1, 2) cross sections from thresholds up to 11.02 GeV. We find clear gamma(10860) and gamma(11020) peaks with little or no continuum contribution. We study the resonant substructure of the gamma(11020) -&gt; h(b)(nP)pi(+)pi(_) transitions and find evidence that they proceed entirely via the intermediate isovector states Z(b)(10610) and Z(b)(10650). The relative fraction of these states is loosely constrained by the current data: The hypothesis that only Z(b)(10610) is produced is excluded at the level of 3.3 standard deviations, while the hypothesis that only Z(b)(10650) is produced is not excluded at a significant level.

    DOI: 10.1103/PhysRevLett.117.142001

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  • Studies of charmed strange baryons in the Lambda D final state at Belle 査読

    Y. Kato, T. Iijima, I. Adachi, H. Aihara, D. M. Asner, V. Aulchenko, R. Ayad, I. Badhrees, A. M. Bakich, E. Barberio, P. Behera, V. Bhardwaj, B. Bhuyan, J. Biswal, A. Bobrov, A. Bondar, G. Bonvicini, A. Bozek, M. Bracko, T. E. Browder, D. Cervenkov, V. Chekelian, B. G. Cheon, K. Chilikin, R. Chistov, K. Cho, V. Chobanova, S. -K. Choi, Y. Choi, D. Cinabro, J. Dalseno, M. Danilov, N. Dash, S. Di Carlo, Z. Dolezal, Z. Drasal, D. Dutta, S. Eidelman, D. Epifanov, H. Farhat, J. E. Fast, T. Ferber, B. G. Fulsom, V. Gaur, N. Gabyshev, A. Garmash, R. Gillard, R. Glattauer, P. Goldenzweig, O. Grzymkowska, J. Haba, K. Hayasaka, H. Hayashii, S. Hirose, W. -S. Hou, G. Inguglia, A. Ishikawa, R. Itoh, Y. Iwasaki, I. Jaegle, K. K. Joo, T. Julius, E. Kato, C. Kiesling, D. Y. Kim, J. B. Kim, K. T. Kim, S. H. Kim, Y. J. Kim, K. Kinoshita, P. Kodys, S. Korpar, D. Kotchetkov, P. Krizan, P. Krokovny, T. Kuhr, A. Kuzmin, Y. -J. Kwon, J. S. Lange, C. H. Li, H. Li, L. Li, Y. Li, L. Li Gioi, J. Libby, D. Liventsev, M. Lubej, T. Luo, M. Masuda, T. Matsuda, D. Matvienko, K. Miyabayashi, H. Miyata, R. Mizuk, G. B. Mohanty, S. Mohanty, A. Moll, H. K. Moon, R. Mussa, M. Nakao, T. Nanut, K. J. Nath, Z. Natkaniec, M. Nayak, M. Niiyama, S. Nishida, S. Ogawa, S. Okuno, S. L. Olsen, P. Pakhlov, G. Pakhlova, B. Pal, C. -S. Park, H. Park, R. Pestotnik, M. Petric, L. E. Piilonen, C. Pulvermacher, J. Rauch, M. Ritter, A. Rostomyan, Y. Sakai, S. Sandilya, L. Santelj, T. Sanuki, V. Savinov, T. Schluter, O. Schneider, G. Schnell, C. Schwanda, Y. Seino, D. Semmler, K. Senyo, O. Seon, I. S. Seong, M. E. Sevior, C. P. Shen, T. -A. Shibata, J. -G. Shiu, A. Sokolov, E. Solovieva, M. Staric, M. Sumihama, T. Sumiyoshi, M. Takizawa, K. Tanida, F. Tenchini, K. Trabelsi, M. Uchida, S. Uehara, T. Uglov, Y. Unno, S. Uno, P. Urquijo, Y. Usov, G. Varner, K. E. Varvell, V. Vorobyev, C. H. Wang, P. Wang, M. Watanabe, Y. Watanabe, S. Wehle, K. M. Williams, E. Won, J. Yamaoka, Y. Yamashita, S. Yashchenko, H. Ye, J. Yelton, Y. Yook, C. Z. Yuan, Z. P. Zhang, V. Zhilich, V. Zhukova, V. Zhulanov, A. Zupanc

    PHYSICAL REVIEW D   94 ( 3 )   032002-1 - 032002-10   2016年8月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We report the discovery of Xi(c)(3055)(0), observed by its decay into the final-state Lambda D-0, and present the first observation and evidence of the decays of Xi(c)(3055)(+) and Xi(c)(3080)(+) into Lambda D+. We also perform a combined analysis of the Lambda D+ with the Sigma K-++(c)- and Sigma(c)*K-++(-) decay modes to measure the ratios of branching fractions, masses and widths with improved accuracy. We measure the ratios of branching fractions B(Xi(c)(3055)(+) -&gt; Lambda D+)/B(Xi(c)(3055)(+) -&gt; Sigma(++)(c) K-) = 5.09 +/- 1.01 +/- 0.76, B(Xi(c)(3080)(+) -&gt; Lambda D+)/B(Xi(c)(3080)(+) -&gt; Sigma K-++(c)-) = 1.29 +/- 0.30 +/- 0.15, and B(Xi(c)(3080)(+) -&gt; Sigma(c)*K-++(-))/B(Xi(c)(3080)(+) -&gt; Sigma K-++(c)-) = 1.07 +/- 0.27 +/- 0.04, where the uncertainties are statistical and systematic. The analysis is performed using a 980 fb(-1) data sample collected with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider.

    DOI: 10.1103/PhysRevD.94.032002

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  • Search for a massive invisible particle X-0 in B+ -&gt; e(+)X(0) and B+ -&gt; mu X-+(0) decays 査読

    C-S. Park, Y-J. Kwon, I. Adachi, H. Aihara, D. M. Asner, T. Aushev, V. Babu, I. Badhrees, A. M. Bakich, E. Barberio, P. Behera, V. Bhardwaj, J. Biswal, G. Bonvicini, A. Bozek, M. Bracko, T. E. Browder, D. Cervenkov, V. Chekelian, A. Chen, B. G. Cheon, K. Chilikin, R. Chistov, K. Cho, V. Chobanova, Y. Choi, D. Cinabro, J. Dalseno, M. Danilov, N. Dash, Z. Dolezal, D. Dutta, S. Eidelman, H. Farhat, J. E. Fast, T. Ferber, B. G. Fulsom, V. Gaur, N. Gabyshev, A. Garmash, R. Gillard, Y. M. Goh, P. Goldenzweig, O. Grzymkowska, T. Hara, K. Hayasaka, H. Hayashii, M. Heck, W-S. Hou, T. Iijima, K. Inami, G. Inguglia, A. Ishikawa, R. Itoh, Y. Iwasaki, I. Jaegle, H. B. Jeon, T. Julius, K. H. Kang, E. Kato, P. Katrenko, D. Y. Kim, J. B. Kim, K. T. Kim, M. J. Kim, S. H. Kim, K. Kinoshita, P. Kodys, S. Korpar, P. Krizan, P. Krokovny, A. Kuzmin, I. S. Lee, C. H. Li, L. Li, Y. Li, L. Li Gioi, J. Libby, D. Liventsev, M. Lubej, P. Lukin, M. Masuda, D. Matvienko, K. Miyabayashi, H. Miyata, R. Mizuk, G. B. Mohanty, S. Mohanty, A. Moll, H. K. Moon, R. Mussa, E. Nakano, M. Nakao, K. J. Nath, M. Nayak, K. Negishi, N. K. Nisar, S. Nishida, S. Ogawa, S. Okuno, P. Pakhlov, G. Pakhlova, B. Pal, C. W. Park, H. Park, T. K. Pedlar, M. Petric, L. E. Piilonen, C. Pulvermacher, M. V. Purohit, J. Rauch, M. Ritter, A. Rostomyan, S. Ryu, Y. Sakai, S. Sandilya, L. Santelj, T. Sanuki, Y. Sato, T. Schlueter, O. Schneider, G. Schnell, C. Schwanda, A. J. Schwartz, Y. Seino, D. Semmler, K. Senyo, O. Seon, M. E. Sevior, V. Shebalin, C. P. Shen, T-A. Shibata, J-G. Shiu, B. Shwartz, F. Simon, A. Sokolov, S. Stanic, M. Staric, J. Stypula, T. Sumiyoshi, U. Tamponi, Y. Teramoto, K. Trabelsi, M. Uchida, T. Uglov, Y. Unno, S. Uno, P. Urquijo, Y. Usov, C. Van Hulse, P. Vanhoefer, G. Varner, K. E. Varvell, M. N. Wagner, C. H. Wang, M-Z. Wang, P. Wang, Y. Watanabe, E. Won, J. Yamaoka, S. Yashchenko, H. Ye, Y. Yook, Y. Yusa, Z. P. Zhang, V. Zhilich, V. Zhulanov, A. Zupanc

    PHYSICAL REVIEW D   94 ( 1 )   012003-1 - 012003-8   2016年7月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We present a search for a non-Standard-Model invisible particle X-0 in the mass range 0.1-1.8 GeV/c(2) in B+ -&gt; e(+)X(0) and B+ -&gt; mu X-+(0) decays. The results are obtained from a 711 fb(-1) data sample that corresponds to 772 x 10(6) B (B) over bar pairs, collected at the Upsilon(4S) resonance with the Belle detector at the KEKB e(+)e(-) collider. One B meson is fully reconstructed in a hadronic mode to determine the momentum of the lepton of the signal decay in the rest frame of the recoiling partner B meson. We find no evidence of a signal and set upper limits on the order of 10(-6).

    DOI: 10.1103/PhysRevD.94.012003

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  • Search for the decay B-0 -&gt; phi gamma 査読

    Z. King, B. Pal, A. J. Schwartz, I. Adachi, H. Aihara, S. Al Said, D. M. Asner, H. Atmacan, T. Aushev, R. Ayad, A. M. Bakich, P. Behera, V. Bhardwaj, B. Bhuyan, J. Biswal, A. Bobrov, A. Bozek, T. E. Browder, D. Cervenkov, V. Chekelian, B. G. Cheon, K. Chilikin, R. Chistov, K. Cho, V. Chobanova, Y. Choi, D. Cinabro, J. Dalseno, N. Dash, Z. Dolezal, D. Dutta, S. Eidelman, H. Farhat, T. Ferber, B. G. Fulsom, V. Gaur, N. Gabyshev, A. Garmash, R. Gillard, R. Glattauer, Y. M. Goh, P. Goldenzweig, B. Golob, J. Haba, T. Hara, K. Hayasaka, H. Hayashii, T. Horiguchi, W. -S. Hou, C. -L. Hsu, T. Iijima, K. Inami, G. Inguglia, A. Ishikawa, R. Itoh, Y. Iwasaki, W. W. Jacobs, H. B. Jeon, K. K. Joo, T. Julius, K. H. Kang, E. Kato, T. Kawasaki, C. Kiesling, D. Y. Kim, H. J. Kim, J. B. Kim, K. T. Kim, S. H. Kim, Y. J. Kim, K. Kinoshita, P. Kodys, S. Korpar, D. Kotchetkov, P. Krizan, P. Krokovny, T. Kuhr, T. Kumita, I. S. Lee, C. H. Li, H. Li, L. Li, Y. Li, L. Li Gioi, J. Libby, T. Luo, M. Masuda, T. Matsuda, D. Matvienko, K. Miyabayashi, H. Miyata, R. Mizuk, G. B. Mohanty, A. Moll, M. Nakao, H. Nakazawa, T. Nanut, K. J. Nath, K. Negishi, S. Nishida, S. Ogawa, S. Okuno, W. Ostrowicz, C. W. Park, S. Paul, T. K. Pedlar, L. Pesantez, R. Pestotnik, M. Petric, L. E. Piilonen, C. Pulvermacher, J. Rauch, M. Ritter, A. Rostomyan, S. Ryu, H. Sahoo, Y. Sakai, S. Sandilya, L. Santelj, T. Sanuki, Y. Sato, V. Savinov, T. Schlueter, O. Schneider, G. Schnell, C. Schwanda, Y. Seino, K. Senyo, M. E. Sevior, V. Shebalin, C. P. Shen, T. -A. Shibata, J. -G. Shiu, B. Shwartz, F. Simon, E. Solovieva, S. Stanic, M. Staric, J. F. Strube, J. Stypula, M. Sumihama, M. Takizawa, N. Taniguchi, Y. Teramoto, K. Trabelsi, M. Uchida, T. Uglov, Y. Unno, S. Uno, P. Urquijo, Y. Usov, P. Vanhoefer, G. Varner, K. E. Varvell, V. Vorobyev, C. H. Wang, M. -Z. Wang, P. Wang, M. Watanabe, Y. Watanabe, S. Wehle, K. M. Williams, E. Won, J. Yamaoka, S. Yashchenko, Y. Yook, C. Z. Yuan, Z. P. Zhang, V. Zhilich, A. Zupanc

    PHYSICAL REVIEW D   93 ( 11 )   111101-1 - 111101-6   2016年6月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We have searched for the decay B-0 -&gt; phi gamma sing the full Belle data set of 772 x 10(6) B (B) over bar pairs collected at the gamma(4S) resonance with the Belle detector at the KEKB e(+)e(-) collider. No signal is observed, and we set an upper limit on the branching fraction of B(B-0 -&gt; phi gamma) &lt; 1.0 x 10(-7) at the 90% confidence level. This is the most stringent limit on this decay mode to date.

    DOI: 10.1103/PhysRevD.93.111101

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  • First observation of gamma gamma -&gt; p(p)over-barK(+)K(-) and search for exotic baryons in pK systems 査読

    C. P. Shen, C. Z. Yuan, I. Adachi, H. Aihara, D. M. Asner, V. Aulchenko, T. Aushev, R. Ayad, V. Babu, I. Badhrees, A. M. Bakich, E. Barberio, P. Behera, V. Bhardwaj, B. Bhuyan, J. Biswal, A. Bobrov, G. Bonvicini, A. Bozek, M. Bracko, T. E. Browder, D. Cervenkov, P. Chang, V. Chekelian, A. Chen, B. G. Cheon, K. Chilikin, R. Chistov, K. Cho, V. Chobanova, S. -K. Choi, Y. Choi, D. Cinabro, J. Dalseno, M. Danilov, N. Dash, Z. Dolezal, Z. Drasal, D. Dutta, S. Eidelman, W. X. Fang, J. E. Fast, T. Ferber, B. G. Fulsom, V. Gaur, N. Gabyshev, A. Garmash, R. Gillard, R. Glattauer, P. Goldenzweig, O. Grzymkowska, J. Haba, K. Hayasaka, H. Hayashii, W. -S. Hou, T. Iijima, K. Inami, G. Inguglia, A. Ishikawa, R. Itoh, Y. Iwasaki, I. Jaegle, H. B. Jeon, K. K. Joo, T. Julius, K. H. Kang, E. Kato, C. Kiesling, D. Y. Kim, J. B. Kim, K. T. Kim, S. H. Kim, Y. J. Kim, P. Kodys, S. Korpar, D. Kotchetkov, P. Krizan, P. Krokovny, A. Kuzmin, Y. -J. Kwon, J. S. Lange, C. H. Li, H. Li, L. Li, Y. Li, L. Li Gioi, J. Libby, D. Liventsev, M. Lubej, T. Luo, M. Masuda, T. Matsuda, D. Matvienko, K. Miyabayashi, H. Miyata, R. Mizuk, G. B. Mohanty, S. Mohanty, A. Moll, H. K. Moon, R. Mussa, E. Nakano, M. Nakao, T. Nanut, K. J. Nath, Z. Natkaniec, S. Nishida, S. Ogawa, S. L. Olsen, W. Ostrowicz, P. Pakhlov, G. Pakhlova, B. Pal, C. -S. Park, H. Park, L. Pesantez, R. Pestotnik, M. Petric, L. E. Piilonen, C. Pulvermacher, J. Rauch, M. Ritter, Y. Sakai, S. Sandilya, L. Santelj, T. Sanuki, V. Savinov, T. Schlueter, O. Schneider, G. Schnell, C. Schwanda, Y. Seino, D. Semmler, K. Senyo, I. S. Seong, M. E. Sevior, T. -A. Shibata, J. -G. Shiu, B. Shwartz, F. Simon, A. Sokolov, E. Solovieva, S. Stanic, M. Staric, J. F. Strube, J. Stypula, M. Sumihama, T. Sumiyoshi, M. Takizawa, U. Tamponi, K. Tanida, F. Tenchini, K. Trabelsi, M. Uchida, S. Uehara, T. Uglov, Y. Unno, S. Uno, P. Urquijo, Y. Usov, C. Van Hulse, G. Varner, C. H. Wang, M. -Z. Wang, P. Wang, M. Watanabe, Y. Watanabe, K. M. Williams, E. Won, J. Yamaoka, J. Yelton, Y. Yook, Y. Yusa, C. C. Zhang, Z. P. Zhang, V. Zhilich, V. Zhukova, V. Zhulanov, A. Zupanc

    PHYSICAL REVIEW D   93 ( 11 )   112017-1 - 112017-9   2016年6月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    The process gamma gamma -&gt; p (p) over barK(+)K(-) and its intermediate processes are measured for the first time using a 980 fb(-1) data sample collected with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. The production of p (p) over barK(+)K(-) and a Lambda(1520)(0) ((Lambda) over bar (1520)(0)) signal in the pK(-) ((p) over barK(+)) invariant mass spectrum are clearly observed. However, no evidence for an exotic baryon near 1540 MeV/c(2), denoted as Theta(1540)(0) ((Theta) over bar (1540)(0)) or Theta(1540)(++) (Theta(1540)(--)), is seen in the pK(-) ((p) over barK(+)) or pK(+) ((p) over barK(-)) invariant mass spectra. Cross sections for gamma gamma -&gt; p (p) over barK(+)K(-), Lambda(1520)(0)(p) over barK(+) + c.c. and the products sigma(gamma gamma -&gt; Theta(1540)(0)(p) over barK(+) + c.c.)B(Theta(1540)(0) -&gt; pK(-)) and sigma(gamma gamma -&gt; Theta(1540)(++)(p) over barK(-) + c.c.)B(Theta(1540)(++) -&gt; pK(+)) are measured. We also determine upper limits on the products of the chi(c0) and chi(c2) two-photon decay widths and their branching fractions to p (p) over barK(+)K(-) at the 90% credibility level.

    DOI: 10.1103/PhysRevD.93.112017

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  • Search for XYZ states in Upsilon(1S) inclusive decays 査読

    C. P. Shen, C. Z. Yuan, Y. Ban, H. Aihara, D. M. Asner, I. Badhrees, A. M. Bakich, E. Barberio, P. Behera, V. Bhardwaj, B. Bhuyan, J. Biswal, A. Bondar, G. Bonvicini, A. Bozek, M. Bracko, T. E. Browder, D. Cervenkov, V. Chekelian, A. Chen, B. G. Cheon, K. Chilikin, R. Chistov, K. Cho, V. Chobanova, S. -K. Choi, Y. Choi, D. Cinabro, J. Dalseno, M. Danilov, N. Dash, S. Di Carlo, Z. Dolezal, Z. Drasal, D. Dutta, S. Eidelman, H. Farhat, J. E. Fast, T. Ferber, B. G. Fulsom, V. Gaur, N. Gabyshev, A. Garmash, P. Goldenzweig, J. Haba, K. Hayasaka, H. Hayashii, W. -S. Hou, T. Iijima, G. Inguglia, A. Ishikawa, R. Itoh, W. W. Jacobs, H. B. Jeon, K. K. Joo, T. Julius, K. H. Kang, D. Y. Kim, J. B. Kim, K. T. Kim, S. H. Kim, Y. J. Kim, K. Kinoshita, P. Kodys, S. Korpar, D. Kotchetkov, P. Krizan, P. Krokovny, T. Kuhr, A. Kuzmin, Y. -J. Kwon, J. S. Lange, C. H. Li, H. Li, L. Li, Y. Li, L. Li Gioi, J. Libby, D. Liventsev, T. Luo, M. Masuda, T. Matsuda, D. Matvienko, A. Moll, H. K. Moon, R. Mussa, M. Nakao, T. Nanut, K. J. Nath, Z. Natkaniec, M. Nayak, K. Negishi, S. Nishida, S. Ogawa, S. Okuno, S. L. Olsen, P. Pakhlov, G. Pakhlova, B. Pal, R. Pestotnik, M. Petric, L. E. Piilonen, C. Pulvermacher, M. Ritter, A. Rostomyan, Y. Sakai, S. Sandilya, L. Santelj, T. Sanuki, V. Savinov, T. Schlueter, O. Schneider, G. Schnell, C. Schwanda, Y. Seino, K. Senyo, O. Seon, I. S. Seong, M. E. Sevior, T. -A. Shibata, J. -G. Shiu, F. Simon, A. Sokolov, E. Solovieva, M. Staric, T. Sumiyoshi, M. Takizawa, K. Tanida, F. Tenchini, K. Trabelsi, M. Uchida, T. Uglov, Y. Unno, S. Uno, G. Varner, A. Vinokurova, V. Vorobyev, C. H. Wang, M. -Z. Wang, P. Wang, X. L. Wang, M. Watanabe, Y. Watanabe, K. M. Williams, E. Won, J. Yamaoka, S. D. Yang, S. Yashchenko, Y. Yook, Y. Yusa, Z. P. Zhang, V. Zhilich, V. Zhukova, V. Zhulanov, A. Zupanc

    PHYSICAL REVIEW D   93 ( 11 )   112013-1 - 112013-11   2016年6月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    The branching fractions of the Upsilon(1S) inclusive decays into final states with a J/psi or psi(2S) are measured with improved precision to be B Upsilon(1S) -&gt; J/psi + anything = (5.25 +/- 0.13(stat) +/- 0.25(syst) x 10(-4) and B Upsilon(1S) -&gt; psi(2S) + anything = (1.23 +/- 0.17(stat) +/- 0.11(syst)) x 10(-4). The first search for Upsilon(1S) decays into XYZ states that decay into a J/psi or a psi(2S) plus one or two charged tracks yields no significant signals for XYZ states in any of the examined decay modes, and upper limits on their production rates in Upsilon(1S) inclusive decays are determined.

    DOI: 10.1103/PhysRevD.93.112013

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  • First Observation of the Doubly Cabibbo-Suppressed Decay of a Charmed Baryon: Lambda(+)(c) -&gt; pK(+)pi(-) 査読

    S. B. Yang, K. Tanida, B. H. Kim, I. Adachi, H. Aihara, D. M. Asner, V. Aulchenko, T. Aushev, V. Babu, I. Badhrees, A. M. Bakich, E. Barberio, V. Bhardwaj, B. Bhuyan, J. Biswal, G. Bonvicini, A. Bozek, M. Bracko, T. E. Browder, D. Cervenkov, V. Chekelian, A. Chen, B. G. Cheon, K. Chilikin, R. Chistov, K. Cho, V. Chobanova, Y. Choi, D. Cinabro, J. Dalseno, M. Danilov, N. Dash, Z. Dolezal, Z. Drasal, D. Dutta, S. Eidelman, H. Farhat, J. E. Fast, T. Ferber, B. G. Fulsom, N. Gabyshev, A. Garmash, V. Gaur, R. Gillard, Y. M. Goh, P. Goldenzweig, D. Greenwald, J. Grygier, J. Haba, P. Hamer, T. Hara, K. Hayasaka, H. Hayashii, W. -S. Hou, T. Iijima, K. Inami, G. Inguglia, A. Ishikawa, R. Itoh, Y. Iwasaki, W. W. Jacobs, I. Jaegle, H. B. Jeon, K. K. Joo, T. Julius, K. H. Kang, E. Kato, P. Katrenko, C. Kiesling, D. Y. Kim, H. J. Kim, J. B. Kim, K. T. Kim, M. J. Kim, S. H. Kim, S. K. Kim, Y. J. Kim, K. Kinoshita, N. Kobayashi, P. Kodys, S. Korpar, P. Krizan, P. Krokovny, T. Kuhr, A. Kuzmin, Y. -J. Kwon, J. S. Lange, I. S. Lee, C. H. Li, H. Li, L. Li, Y. Li, L. Li Gioi, J. Libby, D. Liventsev, M. Lubej, M. Masuda, D. Matvienko, K. Miyabayashi, H. Miyata, R. Mizuk, G. B. Mohanty, A. Moll, H. K. Moon, R. Mussa, E. Nakano, M. Nakao, T. Nanut, K. J. Nath, M. Nayak, K. Negishi, M. Niiyama, N. K. Nisar, S. Nishida, S. Ogawa, S. Okuno, S. L. Olsen, G. Pakhlova, B. Pal, C. W. Park, H. Park, T. K. Pedlar, R. Pestotnik, M. Petric, L. E. Piilonen, C. Pulvermacher, J. Rauch, M. Ritter, A. Rostomyan, S. Ryu, H. Sahoo, Y. Sakai, S. Sandilya, L. Santelj, T. Sanuki, Y. Sato, V. Savinov, T. Schlueter, O. Schneider, G. Schnell, C. Schwanda, A. J. Schwartz, Y. Seino, K. Senyo, O. Seon, I. S. Seong, M. E. Sevior, V. Shebalin, T. -A. Shibata, J. -G. Shiu, B. Shwartz, F. Simon, Y. -S. Sohn, A. Sokolov, S. Stanic, M. Staric, J. Stypula, M. Sumihama, T. Sumiyoshi, M. Takizawa, U. Tamponi, Y. Teramoto, K. Trabelsi, V. Trusov, M. Uchida, T. Uglov, Y. Unno, S. Uno, P. Urquijo, Y. Usov, P. Vanhoefer, G. Varner, K. E. Varvell, A. Vinokurova, A. Vossen, M. N. Wagner, C. H. Wang, M. -Z. Wang, P. Wang, X. L. Wang, Y. Watanabe, K. M. Williams, E. Won, J. Yamaoka, S. Yashchenko, H. Ye, J. Yelton, C. Z. Yuan, Y. Yusa, Z. P. Zhang, V. Zhilich, V. Zhulanov, A. Zupanc

    PHYSICAL REVIEW LETTERS   117 ( 1 )   011801-1 - 011801-6   2016年6月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We report the first observation of the decay Lambda(+)(c) -&gt; pK(+)pi(-) using a 980 fb(-1) data sample collected by the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. This is the first observation of a doubly Cabibbo-suppressed decay of a charmed baryon. We measure the branching ratio of this decay with respect to its Cabibbo-favored counterpart to be B(Lambda(+)(c) -&gt; pK(+)pi(-))/B(Lambda(+)(c) -&gt; pK(-)pi(+)) = (2.35 +/- 0.27 +/- 0.21) x 10(-3), where the uncertainties are statistical and systematic, respectively.

    DOI: 10.1103/PhysRevLett.117.011801

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  • Observation of Z(b)(10610) and Z(b)(10650) Decaying to B Mesons 査読

    A. Garmash, A. Abdesselam, I. Adachi, H. Aihara, D. M. Asner, T. Aushev, R. Ayad, T. Aziz, V. Babu, I. Badhrees, A. M. Bakich, P. Behera, V. Bhardwaj, B. Bhuyan, A. Bobrov, A. Bondar, G. Bonvicini, A. Bozek, M. Bracko, T. E. Browder, D. Cervenkov, V. Chekelian, A. Chen, B. G. Cheon, K. Chilikin, K. Cho, V. Chobanova, Y. Choi, D. Cinabro, J. Dalseno, M. Danilov, N. Dash, Z. Dolezal, A. Drutskoy, D. Dutta, S. Eidelman, D. Epifanov, H. Farhat, J. E. Fast, T. Ferber, B. G. Fulsom, V. Gaur, N. Gabyshev, R. Gillard, Y. M. Goh, P. Goldenzweig, B. Golob, T. Hara, K. Hayasaka, H. Hayashii, T. Iijima, A. Ishikawa, R. Itoh, Y. Iwasaki, I. Jaegle, D. Joffe, K. K. Joo, T. Julius, K. H. Kang, E. Kato, T. Kawasaki, D. Y. Kim, J. B. Kim, K. T. Kim, M. J. Kim, S. H. Kim, Y. J. Kim, K. Kinoshita, S. Korpar, P. Krizan, P. Krokovny, T. Kuhr, A. Kuzmin, Y. -J. Kwon, J. S. Lange, I. S. Lee, C. Li, H. Li, L. Li, L. Li Gioi, J. Libby, D. Liventsev, P. Lukin, M. Masuda, D. Matvienko, K. Miyabayashi, H. Miyata, R. Mizuk, G. B. Mohanty, A. Moll, T. Mori, R. Mussa, E. Nakano, M. Nakao, T. Nanut, Z. Natkaniec, S. Nishida, S. L. Olsen, P. Pakhlov, G. Pakhlova, B. Pal, H. Park, T. K. Pedlar, R. Pestotnik, M. Petric, L. E. Piilonen, C. Pulvermacher, E. Ribezl, M. Ritter, A. Rostomyan, H. Sahoo, Y. Sakai, S. Sandilya, T. Sanuki, V. Savinov, O. Schneider, G. Schnell, C. Schwanda, Y. Seino, D. Semmler, K. Senyo, I. S. Seong, M. E. Sevior, V. Shebalin, C. P. Shen, T. -A. Shibata, J. -G. Shiu, B. Shwartz, F. Simon, Y. -S. Sohn, E. Solovieva, M. Staric, T. Sumiyoshi, U. Tamponi, K. Tanida, Y. Teramoto, K. Trabelsi, M. Uchida, S. Uehara, T. Uglov, S. Uno, C. Van Hulse, P. Vanhoefer, G. Varner, V. Vorobyev, M. N. Wagner, C. H. Wang, M. -Z. Wang, P. Wang, Y. Watanabe, K. M. Williams, E. Won, H. Yamamoto, J. Yamaoka, S. Yashchenko, J. Yelton, Y. Yook, C. Z. Yuan, Z. P. Zhang, V. Zhilich, V. Zhulanov, A. Zupanc

    PHYSICAL REVIEW LETTERS   116 ( 21 )   212001-1 - 212001-7   2016年5月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We report the analysis of the three-body e(+)e(-) -&gt; B (B) over bar pi(+/-), B (B) over bar*pi(+/-), and B*(B) over bar* pi(+/-) processes, including the first observations of the Z(b)(+/-)(10610) -&gt; [B (B) over bar* + c.c.](+/-) and Z(b)(+/-)(10650) -&gt; [B*(B) over bar*](+/-) transitions that are found to dominate the corresponding final states. We measure Born cross sections for the three-body production of sigma(e(+)e(-) -&gt; [B (B) over bar* + c.c.](+/-)pi(-/+)) = [17.4 +/- 1.6(stat) +/- 1.9(syst)]pb and sigma(e(+)e(-) -&gt; [B*(B) over bar*](+/-)pi(-/+)) = [8.75 +/- 1.15(stat) +/- 1.04(syst)] pb and set a 90% C.L. upper limit of sigma(e(+)e(-) -&gt; [B (B) over bar](+/-)pi(-/+)) &lt; 2.9 pb. The results are based on a 121.4 fb(-1) data sample collected with the Belle detector at a center-of-mass energy near the Upsilon(10860) peak.

    DOI: 10.1103/PhysRevLett.116.212001

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  • Observation of the Decay B-s(0) -&gt; K-0(K)over-bar(0) 査読

    B. Pal, A. J. Schwartz, A. Abdesselam, I. Adachi, H. Aihara, D. M. Asner, T. Aushev, R. Ayad, T. Aziz, V. Babu, I. Badhrees, S. Bahinipati, A. M. Bakich, E. Barberio, P. Behera, V. Bhardwaj, B. Bhuyan, J. Biswal, A. Bobrov, A. Bozek, M. Bracko, T. E. Browder, D. Cervenkov, V. Chekelian, A. Chen, B. G. Cheon, R. Chistov, K. Cho, V. Chobanova, Y. Choi, D. Cinabro, J. Dalseno, N. Dash, Z. Dolezal, Z. Drasal, A. Drutskoy, D. Dutta, S. Eidelman, H. Farhat, J. E. Fast, B. G. Fulsom, V. Gaur, A. Garmash, R. Gillard, Y. M. Goh, P. Goldenzweig, D. Greenwald, O. Grzymkowska, J. Haba, T. Hara, K. Hayasaka, H. Hayashii, X. H. He, W. -S. Hou, K. Inami, A. Ishikawa, Y. Iwasaki, W. W. Jacobs, I. Jaegle, H. B. Jeon, D. Joffe, K. K. Joo, T. Julius, K. H. Kang, E. Kato, T. Kawasaki, C. Kiesling, D. Y. Kim, H. J. Kim, K. T. Kim, M. J. Kim, S. H. Kim, K. Kinoshita, P. Kodys, S. Korpar, P. Krizan, P. Krokovny, T. Kuhr, R. Kumar, T. Kumita, A. Kuzmin, Y. -J. Kwon, I. S. Lee, C. H. Li, H. Li, L. Li, L. Li Gioi, J. Libby, D. Liventsev, P. Lukin, T. Luo, M. Masuda, D. Matvienko, K. Miyabayashi, H. Miyata, R. Mizuk, G. B. Mohanty, S. Mohanty, A. Moll, H. K. Moon, T. Mori, R. Mussa, E. Nakano, M. Nakao, T. Nanut, Z. Natkaniec, M. Nayak, N. K. Nisar, S. Nishida, S. Ogawa, S. Okuno, P. Pakhlov, G. Pakhlova, C. W. Park, H. Park, S. Paul, T. K. Pedlar, L. Pesantez, R. Pestotnik, M. Petric, L. E. Piilonen, C. Pulvermacher, J. Rauch, E. Ribezl, M. Ritter, A. Rostomyan, S. Ryu, H. Sahoo, Y. Sakai, S. Sandilya, T. Sanuki, Y. Sato, V. Savinov, T. Schlueter, O. Schneider, G. Schnell, C. Schwanda, Y. Seino, K. Senyo, O. Seon, I. S. Seong, V. Shebalin, T. -A. Shibata, J. -G. Shiu, B. Shwartz, F. Simon, Y. -S. Sohn, A. Sokolov, E. Solovieva, S. Stanic, M. Staric, J. Stypula, M. Sumihama, T. Sumiyoshi, U. Tamponi, Y. Teramoto, K. Trabelsi, M. Uchida, S. Uehara, T. Uglov, S. Uno, P. Urquijo, Y. Usov, C. Van Hulse, P. Vanhoefer, G. Varner, A. Vinokurova, A. Vossen, M. N. Wagner, C. H. Wang, M. -Z. Wang, X. L. Wang, M. Watanabe, Y. Watanabe, K. M. Williams, E. Won, J. Yamaoka, J. Yelton, C. Z. Yuan, Y. Yusa, Z. P. Zhang, V. Zhilich, V. Zhulanov, A. Zupanc

    PHYSICAL REVIEW LETTERS   116 ( 16 )   161801-1 - 161801-6   2016年4月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We measure the decay B-s(0) -&gt; K-0(K) over bar (0) using data collected at the Upsilon(5S) resonance with the Belle detector at the KEKB e(+)e(-) collider. The data sample used corresponds to an integrated luminosity of 121.4 fb(-1). We measure a branching fraction beta(B-s(0) -&gt; K-0(K) over bar (0)) = [19.6(-5.1)(+5.8)(stat) +/- 1.0(syst) +/- 2.0(N-Bs0 (B) over bar s0)] x 10(-6) with a significance of 5.1 standard deviations. This measurement constitutes the first observation of this decay.

    DOI: 10.1103/PhysRevLett.116.161801

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  • First model-independent Dalitz analysis of B0 → DK∗0, D → KS π+π-decay 査読

    Negishi K, Ishikawa A, Yamamoto H, Abdesselam A, Adachi I, Aihara H, Said A.Al, Asner D.M, Aulchenko V, Aushev T, Ayad R, Babu V, Badhrees I, Bahinipati S, Bakich A.M, Barberio E, Biswal J, Bonvicini G, Bozek A, Bracko M, Browder T.E, Chekelian V, Chen A, Cheon B.G, Chilikin K, Chistov R, Cho K, Chobanova V, Choi S.-K, Choi Y, Cinabro D, Dalseno J, Danilov M, Dolezal Z, Drutskoy A, Dutta D, Eidelman S, Farhat H, Fast J.E, Ferber T, Fulsom B.G, Gaur V, Gabyshev N, Garmash A, Getzkow D, Gillard R, Glattauer R, Goh Y.M, Goldenzweig P, Golob B, Grzymkowska O, Haba J, Hara T, Hayasaka K, Hayashii H, He X.H, Horiguchi T, Hou W.-S, Iijima T, Inami K, Itoh R, Iwasaki Y, Jaegle I, Joffe D, Joo K.K, Julius T, Kang K.H, Kawasaki T, Kiesling C, Kim D.Y, Kim J.B, Kim J.H, Kim K.T, Kim M.J, Kim S.H, Kim Y.J, Kinoshita K, Ko B.R, Kodys P, Korpar S, Krizan P, Krokovny P, Kumita T, Kuzmin A, Kwon Y.-J, Lange J.S, Lee I.S, Lewis P, Li Y, Li Gioi L, Libby J, Liventsev D, Lukin P, Masuda M, Matvienko D, Miyabayashi K, Miyata H, Mizuk R, Mohanty G.B, Moll A, Moon H.K, Mussa R, Nakao M, Nanut T, Natkaniec Z, Nayak M, Nisar N.K, Nishida S, Ogawa S, Okuno S, Onuki Y, Pakhlov P, Pakhlova G, Pal B, Park C.W, Park H, Pedlar T.K, Pesantez L, Pestotnik R, Petric M, Piilonen L.E, Pulvermacher C, Ribezl E, Ritter M, Rostomyan A, Sakai Y, Sandilya S, Santelj L, Sanuki T, Sato Y, Savinov V, Schneider O, Schnell G, Schwanda C, Senyo K, Sevior M.E, Shebalin V, Shen C.P, Shibata T.-A, Shiu J.-G, Simon F, Sohn Y.-S, Solovieva E, Stanic S, Staric M, Steder M, Sumihama M, Sumiyoshi T, Tamponi U, Teramoto Y, Uchida M, Unno Y, Uno S, Urquijo P, Van Hulse C, Vanhoefer P, Varner G, Vinokurova A, Vossen A, Wagner M.N, Wang C.H, Wang M.-Z, Wang P, Wang X.L, Watanabe M, Watanabe Y, Wehle S, Williams K.M, Won E, Yamaoka J, Yamashita Y, Yashchenko S, Yelton J, Yook Y, Yuan C.Z, Yusa Y, Zhang Z.P, Zhilich V, Zhulanov V, Zupanc A

    Progress of Theoretical and Experimental Physics   2016 ( 4 )   2016年4月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.1093/ptep/ptw030

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    その他リンク: http://orcid.org/0000-0002-1018-219X

  • Inclusive and exclusive measurements of B decays to chi(c1) and chi(c2) at Belle 査読

    V. Bhardwaj, K. Miyabayashi, E. Panzenboeck, K. Trabelsi, A. Frey, A. Abdesselam, I. Adachi, H. Aihara, S. Al Said, K. Arinstein, D. M. Asner, H. Atmacan, V. Aulchenko, T. Aushev, R. Ayad, V. Babu, I. Badhrees, S. Bahinipati, A. M. Bakich, A. Bala, V. Bansal, E. Barberio, B. Bhuyan, J. Biswal, A. Bobrov, A. Bondar, A. Bozek, M. Bracko, T. E. Browder, D. Cervenkov, V. Chekelian, A. Chen, B. G. Cheon, K. Chilikin, R. Chistov, K. Cho, V. Chobanova, S-K. Choi, Y. Choi, D. Cinabro, J. Dalseno, M. Danilov, Z. Dolezal, D. Dutta, S. Eidelman, H. Farhat, J. E. Fast, T. Ferber, O. Frost, B. G. Fulsom, V. Gaur, N. Gabyshev, S. Ganguly, A. Garmash, R. Gillard, R. Glattauer, Y. M. Goh, P. Goldenzweig, B. Golob, D. Greenwald, J. Haba, P. Hamer, K. Hayasaka, H. Hayashii, X. H. He, W-S. Hou, T. Iijima, K. Inami, A. Ishikawa, R. Itoh, Y. Iwasaki, I. Jaegle, D. Joffe, K. K. Joo, T. Julius, E. Kato, P. Katrenko, T. Kawasaki, C. Kiesling, D. Y. Kim, J. B. Kim, K. T. Kim, M. J. Kim, S. H. Kim, Y. J. Kim, K. Kinoshita, B. R. Ko, N. Kobayashi, P. Kodys, S. Korpar, P. Krizan, P. Krokovny, T. Kuhr, R. Kumar, T. Kumita, A. Kuzmin, Y-J. Kwon, I. S. Lee, C. Li, Y. Li, L. Li Gioi, J. Libby, D. Liventsev, A. Loos, P. Lukin, M. Masuda, D. Matvienko, H. Miyata, R. Mizuk, G. B. Mohanty, S. Mohanty, A. Moll, H. K. Moon, R. Mussa, E. Nakano, M. Nakao, T. Nanut, Z. Natkaniec, M. Nayak, N. K. Nisar, S. Nishida, S. Ogawa, S. Okuno, G. Pakhlova, B. Pal, C. W. Park, H. Park, T. K. Pedlar, R. Pestotnik, M. Petric, L. E. Piilonen, C. Pulvermacher, M. V. Purohit, J. Rauch, E. Ribezl, M. Ritter, A. Rostomyan, H. Sahoo, Y. Sakai, S. Sandilya, L. Santelj, T. Sanuki, Y. Sato, V. Savinov, O. Schneider, G. Schnell, C. Schwanda, Y. Seino, D. Semmler, K. Senyo, O. Seon, M. E. Sevior, V. Shebalin, C. P. Shen, T-A. Shibata, J-G. Shiu, B. Shwartz, F. Simon, J. B. Singh, Y-S. Sohn, A. Sokolov, E. Solovieva, M. Staric, J. Stypula, M. Sumihama, T. Sumiyoshi, U. Tamponi, K. Tanida, Y. Teramoto, M. Uchida, S. Uehara, T. Uglov, Y. Unno, S. Uno, P. Urquijo, Y. Usov, C. Van Hulse, P. Vanhoefer, G. Varner, A. Vinokurova, V. Vorobyev, C. H. Wang, M-Z. Wang, P. Wang, X. L. Wang, M. Watanabe, Y. Watanabe, S. Wehle, E. Won, J. Yamaoka, S. Yashchenko, H. Ye, Y. Yook, C. Z. Yuan, Y. Yusa, Z. P. Zhang, V. Zhilich, V. Zhulanov, A. Zupanc

    PHYSICAL REVIEW D   93 ( 5 )   052016-1 - 052016-13   2016年3月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We report inclusive and exclusive measurements for chi(c1) and chi(c2) production in B decays. We measure B(B -&gt; chi X-c1) = (3.03 +/- 0.05 (stat) +/- 0.24(syst)) x 10(-3) and B(B -&gt; chi X-c2) = (0.70 +/- 0.06 (stat) +/- 0.10(syst)) x 10(-3). For the first time, chi(c2) production in exclusive B decays in the modes B-0 -&gt; chi(c2) pi K--(+) and B-0 -&gt; chi(c2) pi(-)pi K-+(+) has been observed, along with first evidence for the B-0 -&gt; chi(c2) pi K--(s)0 decay mode. For chi c1 production, we report the first observation in the B+ -&gt; chi(c1) pi(-)pi K-+(+), B-0 -&gt; chi(c1) pi(-)pi K-+(s)0 and B-0 -&gt; chi(c1) pi(-)pi K-+(+) decay modes. Using these decay modes, we observe a difference in the production mechanism of chi(c2) in comparison to chi(c1) in B decays. In addition, we report searches for X(3872) and chi(c1) (2P) in the B+ -&gt; (chi(c1) pi(+)pi(-))K+ decay mode. The reported results use 772 x 10(6) B (B) over bar events collected at the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider.

    DOI: 10.1103/PhysRevD.93.052016

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  • Search for the rare decay D-0 -&gt; gamma gamma at Belle 査読

    N. K. Nisar, G. B. Mohanty, K. Trabelsi, T. Aziz, A. Abdesselam, I. Adachi, H. Aihara, D. M. Asner, V. Aulchenko, T. Aushev, R. Ayad, V. Babu, I. Badhrees, S. Bahinipati, E. Barberio, P. Behera, V. Bhardwaj, J. Biswal, A. Bobrov, A. Bozek, M. Bracko, F. Breibeck, T. E. Browder, D. Cervenkov, V. Chekelian, A. Chen, B. G. Cheon, R. Chistov, K. Cho, V. Chobanova, Y. Choi, D. Cinabro, J. Dalseno, N. Dash, Z. Dolezal, Z. Drasal, A. Drutskoy, D. Dutta, S. Eidelman, H. Farhat, J. E. Fast, B. G. Fulsom, V. Gaur, A. Garmash, R. Gillard, Y. M. Goh, P. Goldenzweig, B. Golob, D. Greenwald, O. Grzymkowska, J. Haba, T. Hara, K. Hayasaka, H. Hayashii, X. H. He, W. -S. Hou, K. Inami, A. Ishikawa, Y. Iwasaki, W. W. Jacobs, I. Jaegle, H. B. Jeon, D. Joffe, K. K. Joo, T. Julius, K. H. Kang, E. Kato, T. Kawasaki, C. Kiesling, D. Y. Kim, H. J. Kim, K. T. Kim, M. J. Kim, S. H. Kim, K. Kinoshita, P. Kodys, S. Korpar, P. Krizan, P. Krokovny, T. Kuhr, R. Kumar, T. Kumita, A. Kuzmin, Y. -J. Kwon, I. S. Lee, J. S. Lange, H. Li, L. Li, L. Li Gioi, J. Libby, D. Liventsev, P. Lukin, M. Masuda, D. Matvienko, K. Miyabayashi, H. Miyata, R. Mizuk, S. Mohanty, A. Moll, H. K. Moon, T. Mori, R. Mussa, E. Nakano, M. Nakao, T. Nanut, Z. Natkaniec, M. Nayak, M. Niiyama, S. Nishida, S. Ogawa, S. Okuno, P. Pakhlov, G. Pakhlova, B. Pal, C. W. Park, H. Park, S. Paul, T. K. Pedlar, L. Pesantez, R. Pestotnik, M. Petric, L. E. Piilonen, K. Prasanth, C. Pulvermacher, J. Rauch, E. Ribezl, M. Ritter, A. Rostomyan, S. Ryu, H. Sahoo, Y. Sakai, S. Sandilya, T. Sanuki, Y. Sato, V. Savinov, T. Schlueter, O. Schneider, G. Schnell, C. Schwanda, A. J. Schwartz, Y. Seino, K. Senyo, O. Seon, I. S. Seong, V. Shebalin, T. -A. Shibata, J. -G. Shiu, B. Shwartz, F. Simon, J. B. Singh, Y. -S. Sohn, E. Solovieva, S. Stanic, M. Staric, J. Stypula, M. Sumihama, T. Sumiyoshi, U. Tamponi, Y. Teramoto, M. Uchida, T. Uglov, S. Uno, P. Urquijo, C. Van Hulse, P. Vanhoefer, G. Varner, K. E. Varvell, A. Vinokurova, A. Vossen, M. N. Wagner, C. H. Wang, M. -Z. Wang, X. L. Wang, M. Watanabe, Y. Watanabe, K. M. Williams, E. Won, J. Yelton, C. Z. Yuan, Y. Yusa, Z. P. Zhang, V. Zhilich, V. Zhulanov, A. Zupanc

    PHYSICAL REVIEW D   93 ( 5 )   051102-1 - 051102-7   2016年3月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We search for the rare radiative decay D-0 -&gt; gamma gamma using a data sample with an integrated luminosity of 832 fb(-1) recorded by the Belle detector at the KEKB e(+)e(-) asymmetric-energy collider. We find no statistically significant signal and set an upper limit on the branching fraction of B(D-0 -&gt; gamma gamma) &lt; 8.5 x 10(-7) at 90% confidence level. This is the most restrictive limit on the decay channel to date.

    DOI: 10.1103/PhysRevD.93.051102

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  • Measurement of the decay B -&gt; Dl nu(l) in fully reconstructed events and determination of the Cabibbo-Kobayashi-Maskawa matrix element vertical bar V-cb vertical bar 査読

    R. Glattauer, C. Schwanda, A. Abdesselam, I. Adachi, K. Adamczyk, H. Aihara, S. Al Said, D. M. Asner, T. Aushev, R. Ayad, T. Aziz, I. Badhrees, A. M. Bakich, V. Bansal, E. Barberio, B. Bhuyan, J. Biswal, G. Bonvicini, A. Bozek, M. Bracko, F. Breibeck, T. E. Browder, D. Cervenkov, V. Chekelian, A. Chen, B. G. Cheon, K. Chilikin, R. Chistov, K. Cho, V. Chobanova, Y. Choi, D. Cinabro, J. Dalseno, M. Danilov, N. Dash, J. Dingfelder, Z. Dolezal, A. Drutskoy, D. Dutta, S. Eidelman, H. Farhat, J. E. Fast, T. Ferber, A. Frey, B. G. Fulsom, V. Gaur, N. Gabyshev, A. Garmash, R. Gillard, Y. M. Goh, P. Goldenzweig, B. Golob, D. Greenwald, J. Haba, P. Hamer, T. Hara, J. Hasenbusch, K. Hayasaka, H. Hayashii, W. -S. Hou, C. -L. Hsu, T. Iijima, K. Inami, G. Inguglia, A. Ishikawa, H. B. Jeon, D. Joffe, K. K. Joo, T. Julius, K. H. Kang, E. Kato, T. Kawasaki, C. Kiesling, D. Y. Kim, J. B. Kim, J. H. Kim, K. T. Kim, M. J. Kim, S. H. Kim, Y. J. Kim, K. Kinoshita, P. Kodys, S. Korpar, P. Krizan, P. Krokovny, T. Kuhr, A. Kuzmin, Y. -J. Kwon, I. S. Lee, L. Li, Y. Li, J. Libby, Y. Liu, D. Liventsev, P. Lukin, J. MacNaughton, M. Masuda, D. Matvienko, K. Miyabayashi, H. Miyata, R. Mizuk, G. B. Mohanty, S. Mohanty, A. Moll, H. K. Moon, R. Mussa, E. Nakano, M. Nakao, T. Nanut, Z. Natkaniec, M. Nayak, N. K. Nisar, S. Nishida, S. Ogawa, S. Okuno, C. Oswald, P. Pakhlov, G. Pakhlova, B. Pal, H. Park, T. K. Pedlar, L. Pesntez, R. Pestotnik, M. Petric, L. E. Piilonen, C. Pulvermacher, J. Rauch, E. Ribezl, M. Ritter, A. Rostomyan, H. Sahoo, Y. Sakai, S. Sandilya, L. Santelj, T. Sanuki, V. Savinov, O. Schneider, G. Schnell, A. J. Schwartz, Y. Seino, K. Senyo, O. Seon, M. E. Sevior, V. Shebalin, T. -A. Shibata, J. -G. Shiu, B. Shwartz, A. Sibidanov, F. Simon, Y. -S. Sohn, A. Sokolov, E. Solovieva, M. Staric, T. Sumiyoshi, U. Tamponi, Y. Teramoto, K. Trabelsi, V. Trusov, M. Uchida, Y. Unno, S. Uno, P. Urquijo, Y. Usov, C. Van Hulse, P. Vanhoefer, G. Varner, K. E. Varvell, V. Vorobyev, A. Vossen, C. H. Wang, M. -Z. Wang, P. Wang, Y. Watanabe, E. Won, H. Yamamoto, Y. Yamashita, Y. Yook, Z. P. Zhang, V. Zhilich, V. Zhulanov, A. Zupanc

    PHYSICAL REVIEW D   93 ( 3 )   032006-1 - 032006-14   2016年2月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We present a determination of the magnitude of the Cabibbo-Kobayashi-Maskawa matrix element vertical bar V-cb vertical bar using the decay B -&gt; Dl nu(l) (l = e,mu) based on 711 fb(-1) of e(+)e(-) -&gt; Upsilon(4S) data recorded by the Belle detector and containing 772 x 10(6) B (B) over bar pairs. One B meson in the event is fully reconstructed in a hadronic decay mode, while the other, on the signal side, is partially reconstructed from a charged lepton and either a D+ or D-0 meson in a total of 23 hadronic decay modes. The isospin-averaged branching fraction of the decay B -&gt; Dl nu(l) is found to be B(B-0 -&gt; D(-)l(vertical bar)nu(l)) = (2.31 +/- 0.03(stat) +/- 0.11(syst))%. Analyzing the differential decay rate as a function of the hadronic recoil with the parametrization of Caprini, Lellouch, and Neubert and using the form-factor prediction G(1) = 1.0541 +/- 0.0083 calculated by FNAL/MILC, we obtain eta(EW)vertical bar V-cb vertical bar = (40.12 +/- 1.34) x 10(-3), where eta(EW) is the electroweak correction factor. Alternatively, assuming the model-independent form-factor parametrization of Boyd, Grinstein, and Lebed and using lattice QCD data from the FNAL/MILC and HPQCD collaborations, we find eta(EW)vertical bar V-cb vertical bar = (41.10 +/- 1.14) x 10(-3).

    DOI: 10.1103/PhysRevD.93.032006

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  • Study of pi(0) pair production in single-tag two-photon collisions 査読

    M. Masuda, S. Uehara, Y. Watanabe, H. Nakazawa, A. Abdesselam, I. Adachi, H. Aihara, S. Al Said, D. M. Asner, H. Atmacan, V. Aulchenko, T. Aushev, V. Babu, I. Badhrees, A. M. Bakich, E. Barberio, P. Behera, B. Bhuyan, J. Biswal, A. Bobrov, G. Bonvicini, A. Bozek, M. Bracko, T. E. Browder, D. Cervenkov, V. Chekelian, A. Chen, B. G. Cheon, K. Chilikin, R. Chistov, K. Cho, V. Chobanova, S. -K. Choi, Y. Choi, D. Cinabro, J. Dalseno, M. Danilov, N. Dash, J. Dingfelder, Z. Dolezal, Z. Drasal, D. Dutta, S. Eidelman, D. Epifanov, H. Farhat, E. Fast, T. Ferber, B. G. Fulsom, V. Gaur, N. Gabyshev, A. Garmash, R. Gillard, F. Giordano, R. Glattauer, Y. M. Goh, P. Goldenzweig, B. Golob, J. Haba, K. Hayasaka, H. Hayashii, X. H. He, W. -S. Hou, T. Iijima, K. Inami, A. Ishikawa, R. Itoh, Y. Iwasaki, I. Jaegle, D. Joffe, K. K. Joo, T. Julius, K. H. Kang, E. Kato, T. Kawasaki, D. Y. Kim, J. B. Kim, J. H. Kim, K. T. Kim, M. J. Kim, S. H. Kim, Y. J. Kim, B. R. Ko, S. Korpar, P. Krizan, P. Krokovny, T. Kumita, A. Kuzmin, Y. -J. Kwon, J. S. Lange, D. H. Lee, I. S. Lee, C. Li, L. Li, Y. Li, J. Libby, D. Liventsev, P. Lukin, D. Matvienko, K. Miyabayashi, H. Miyata, R. Mizuk, G. B. Mohanty, S. Mohanty, A. Moll, H. K. Moon, T. Mori, R. Mussa, E. Nakano, M. Nakao, T. Nanut, Z. Natkaniec, M. Nayak, N. K. Nisar, S. Nishida, S. Ogawa, P. Pakhlov, G. Pakhlova, B. Pal, C. W. Park, H. Park, T. K. Pedlar, R. Pestotnik, M. Petric, L. E. Piilonen, J. Rauch, E. Ribezl, M. Ritter, A. Rostomyan, S. Sandilya, L. Santelj, T. Sanuki, Y. Sato, V. Savinov, O. Schneider, G. Schnell, C. Schwanda, Y. Seino, K. Senyo, O. Seon, M. E. Sevior, V. Shebalin, C. P. Shen, T. -A. Shibata, J. -G. Shiu, B. Shwartz, F. Simon, Y. -S. Sohn, A. Sokolov, E. Solovieva, M. Staric, M. Sumihama, T. Sumiyoshi, U. Tamponi, K. Tanida, Y. Teramoto, T. Uglov, Y. Unno, S. Uno, C. Van Hulse, P. Vanhoefer, G. Varner, A. Vinokurova, V. Vorobyev, A. Vossen, M. N. Wagner, C. H. Wang, M. -Z. Wang, P. Wang, K. M. Williams, E. Won, J. Yamaoka, Y. Yamashita, S. Yashchenko, H. Ye, Y. Yusa, C. C. Zhang, Z. P. Zhang, V. Zhilich, V. Zhulanov, A. Zupanc

    PHYSICAL REVIEW D   93 ( 3 )   032003-1 - 032003-34   2016年2月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We report a measurement of the differential cross section of pi(0) pair production in single-tag two-photon collisions, gamma*gamma -&gt; pi(0) pi(0), in e(+) e(-) scattering. The cross section is measured for Q(2) up to 30 GeV2, where Q(2) is the negative of the invariant mass squared of the tagged photon, in the kinematic range 0.5 GeV &lt; W &lt; 2.1 GeV and vertical bar cos theta*vertical bar &lt; 1.0 for the total energy and pion scattering angle, respectively, in the gamma*gamma center-of-mass system. The results are based on a data sample of 759 fb(-1) collected with the Belle detector at the KEKB asymmetric-energy e(+) e(-) collider. The transition form factor of the f(0)(980) and that of the f(2)(1270) with the helicity-0, -1, and -2 components separately are measured for the first time and are compared with theoretical calculations.

    DOI: 10.1103/PhysRevD.93.032003

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  • Measurement of the lepton forward-backward asymmetry in B -&gt; X(s)l(+)l(-) decays with a sum of exclusive modes 査読

    Y. Sato, A. Ishikawa, H. Yamamoto, A. Abdesselam, I. Adachi, K. Adamczyk, H. Aihara, D. M. Asner, V. Aulchenko, T. Aushev, R. Ayad, A. M. Bakich, A. Bala, V. Bhardwaj, B. Bhuyan, A. Bondar, G. Bonvicini, A. Bozek, M. Bracko, T. E. Browder, D. Cervenkov, V. Chekelian, A. Chen, B. G. Cheon, I. -S. Cho, K. Cho, V. Chobanova, Y. Choi, D. Cinabro, J. Dalseno, M. Danilov, Z. Dolezal, Z. Drasal, A. Drutskoy, D. Dutta, K. Dutta, S. Eidelman, H. Farhat, J. E. Fast, T. Ferber, V. Gaur, A. Garmash, R. Gillard, Y. M. Goh, B. Golob, J. Haba, T. Hara, K. Hayasaka, H. Hayashii, X. H. He, Y. Hoshi, W. -S. Hou, H. J. Hyun, T. Iijima, R. Itoh, Y. Iwasaki, T. Iwashita, I. Jaegle, T. Julius, J. H. Kang, E. Kato, Y. Kato, H. Kawai, T. Kawasaki, H. Kichimi, D. Y. Kim, H. J. Kim, J. B. Kim, J. H. Kim, M. J. Kim, Y. J. Kim, K. Kinoshita, J. Klucar, B. R. Ko, P. Kodys, S. Korpar, P. Krizan, P. Krokovny, T. Kuhr, T. Kumita, A. Kuzmin, Y. -J. Kwon, S. -H. Lee, Y. Li, J. Libby, C. Liu, Y. Liu, Z. Q. Liu, D. Liventsev, P. Lukin, H. Miyata, R. Mizuk, G. B. Mohanty, A. Moll, R. Mussa, M. Nakao, Z. Natkaniec, M. Nayak, E. Nedelkovska, N. K. Nisar, S. Nishida, O. Nitoh, S. Ogawa, P. Pakhlov, H. Park, H. K. Park, T. K. Pedlar, T. Peng, R. Pestotnik, M. Petric, L. E. Piilonen, E. Ribezl, M. Ritter, M. Roehrken, A. Rostomyan, H. Sahoo, T. Saito, Y. Sakai, S. Sandilya, D. Santel, L. Santelj, T. Sanuki, V. Savinov, O. Schneider, G. Schnell, C. Schwanda, A. J. Schwartz, R. Seidl, D. Semmler, K. Senyo, M. E. Sevior, M. Shapkin, C. P. Shen, T. -A. Shibata, J. -G. Shiu, B. Shwartz, A. Sibidanov, F. Simon, Y. -S. Sohn, A. Sokolov, E. Solovieva, S. Stanic, M. Staric, T. Sumiyoshi, U. Tamponi, G. Tatishvili, Y. Teramoto, K. Trabelsi, M. Uchida, S. Uehara, T. Uglov, Y. Unno, S. Uno, P. Urquijo, Y. Ushiroda, Y. Usov, S. E. Vahsen, C. Van Hulse, P. Vanhoefer, G. Varner, K. E. Varvell, V. Vorobyev, C. H. Wang, M. -Z. Wang, P. Wang, X. L. Wang, Y. Watanabe, E. Won, J. Yamaoka, Y. Yamashita, S. Yashchenko, Y. Yook, Z. P. Zhang, V. Zhilich, V. Zhulanov, A. Zupanc

    PHYSICAL REVIEW D   93 ( 3 )   032008-1 - 032008-11   2016年2月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We report the first measurement of the lepton forward-backward asymmetry A(FB) as a function of the squared four-momentum of the dilepton system, q(2), for the electroweak penguin process B -&gt; X(s)l(+)l(-) with a sum of exclusive final states, where l is an electron or a muon and X-s is a hadronic recoil system with an s quark. The results are based on a data sample containing 772 x 10(6) B (B) over bar pairs recorded at the gamma (4S) resonance with the Belle detector at the KEKB e(+)e(-) collider. A(FB) for the inclusive B -&gt; X(s)l(+)l(-) is extrapolated from the sum of 10 exclusive X-s states whose invariant mass is less than 2 GeV/c(2). For q(2) &gt; 10.2 GeV2/c(2), A(FB) &lt; 0 is excluded at the 2.3 sigma level, where sigma is the standard deviation. For q(2) &lt; 4.3 GeV2/c(2), the result is within 1.8 sigma of the standard model theoretical expectation.

    DOI: 10.1103/PhysRevD.93.032008

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  • First observation of the decay B-0 -&gt; psi(2S)pi(0) 査読

    V. Chobanova, J. Dalseno, C. Kiesling, A. Abdesselam, I. Adachi, H. Aihara, D. M. Asner, T. Aushev, R. Ayad, V. Babu, I. Badhrees, S. Bahinipati, A. M. Bakich, E. Barberio, P. Behera, V. Bhardwaj, B. Bhuyan, J. Biswal, A. Bobrov, A. Bozek, M. Bracko, T. E. Browder, D. Cervenkov, V. Chekelian, A. Chen, B. G. Cheon, R. Chistov, K. Cho, Y. Choi, D. Cinabro, N. Dash, Z. Dolezal, Z. Drasal, A. Drutskoy, S. Eidelman, H. Farhat, J. E. Fast, T. Ferber, B. G. Fulsom, V. Gaur, N. Gabyshev, A. Garmash, R. Gillard, Y. M. Goh, P. Goldenzweig, B. Golob, O. Grzymkowska, J. Haba, T. Hara, K. Hayasaka, H. Hayashii, W. -S. Hou, T. Iijima, K. Inami, A. Ishikawa, Y. Iwasaki, I. Jaegle, H. B. Jeon, D. Joffe, K. K. Joo, T. Julius, E. Kato, P. Katrenko, T. Kawasaki, D. Y. Kim, H. J. Kim, J. B. Kim, K. T. Kim, M. J. Kim, S. H. Kim, Y. J. Kim, K. Kinoshita, P. Kodys, S. Korpar, P. Krizan, P. Krokovny, T. Kuhr, R. Kumar, T. Kumita, A. Kuzmin, Y. -J. Kwon, I. S. Lee, H. Li, L. Li, Y. Li, L. Li Gioi, J. Libby, D. Liventsev, M. Masuda, D. Matvienko, K. Miyabayashi, H. Miyata, R. Mizuk, G. B. Mohanty, S. Mohanty, A. Moll, H. K. Moon, T. Mori, R. Mussa, E. Nakano, M. Nakao, T. Nanut, Z. Natkaniec, M. Nayak, E. Nedelkovska, N. K. Nisar, S. Nishida, S. Ogawa, P. Pakhlov, G. Pakhlova, B. Pal, C. W. Park, H. Park, S. Paul, T. K. Pedlar, R. Pestotnik, M. Petric, L. E. Piilonen, C. Pulvermacher, J. Rauch, E. Ribezl, M. Ritter, S. Ryu, H. Sahoo, Y. Sakai, S. Sandilya, T. Sanuki, V. Savinov, T. Schlueter, O. Schneider, G. Schnell, C. Schwanda, A. J. Schwartz, Y. Seino, K. Senyo, O. Seon, M. E. Sevior, V. Shebalin, T. -A. Shibata, J. -G. Shiu, B. Shwartz, F. Simon, J. B. Singh, Y. -S. Sohn, A. Sokolov, E. Solovieva, M. Staric, J. Stypula, M. Sumihama, K. Sumisawa, T. Sumiyoshi, U. Tamponi, Y. Teramoto, K. Trabelsi, M. Uchida, S. Uehara, T. Uglov, Y. Unno, S. Uno, P. Urquijo, Y. Usov, C. Van Hulse, P. Vanhoefer, G. Varner, A. Vinokurova, V. Vorobyev, M. N. Wagner, C. H. Wang, M. -Z. Wang, P. Wang, X. L. Wang, M. Watanabe, Y. Watanabe, K. M. Williams, E. Won, J. Yamaoka, S. Yashchenko, H. Ye, J. Yelton, C. Z. Yuan, Y. Yusa, Z. P. Zhang, V. Zhilich, V. Zhulanov, A. Zupanc

    PHYSICAL REVIEW D   93 ( 3 )   031101-1 - 031101-7   2016年2月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We report a measurement of the B-0 -&gt; psi(2S)pi(0) branching fraction based on the full Upsilon(4S) data set of 772 x 10(6) B (B) over bar pairs collected by the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. We obtain B(B-0 -&gt; psi(2S)pi(0)) = (1.17 +/- 0.17(stat) +/- 0.08(syst)) x 10(-5). The result has a significance of 7.2 standard deviations and is the first observation of the decay B-0 -&gt; psi(2S)pi(0).

    DOI: 10.1103/PhysRevD.93.031101

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  • Study of B-0 -&gt; rho(+)rho(-) decays and implications for the CKM angle phi(2) 査読

    P. Vanhoefer, J. Dalseno, C. Kiesling, A. Abdesselam, I. Adachi, H. Aihara, S. Al Said, K. Arinstein, D. M. Asner, H. Atmacan, T. Aushev, T. Aziz, V. Babu, I. Badhrees, A. M. Bakich, V. Bansal, E. Barberio, P. Behera, B. Bhuyan, J. Biswal, A. Bobrov, A. Bozek, M. Bracko, T. E. Browder, D. Cervenkov, P. Chang, V. Chekelian, A. Chen, B. G. Cheon, K. Chilikin, R. Chistov, V. Chobanova, S. -K. Choi, Y. Choi, D. Cinabro, M. Danilov, N. Dash, J. Dingfelder, Z. Dolezal, Z. Drasal, D. Dutta, S. Eidelman, H. Farhat, J. E. Fast, T. Ferber, B. G. Fulsom, V. Gaur, N. Gabyshev, A. Garmash, R. Gillard, Y. M. Goh, P. Goldenzweig, B. Golob, D. Greenwald, J. Haba, P. Hamer, T. Hara, K. Hayasaka, H. Hayashii, X. H. He, T. Horiguchi, W. -S. Hou, T. Iijima, K. Inami, A. Ishikawa, R. Itoh, Y. Iwasaki, W. W. Jacobs, I. Jaegle, D. Joffe, K. K. Joo, T. Julius, K. H. Kang, E. Kato, P. Katrenko, T. Kawasaki, D. Y. Kim, H. J. Kim, J. B. Kim, J. H. Kim, K. T. Kim, M. J. Kim, S. H. Kim, Y. J. Kim, K. Kinoshita, B. R. Ko, S. Korpar, P. Krizan, P. Krokovny, T. Kuhr, T. Kumita, A. Kuzmin, Y. -J. Kwon, I. S. Lee, L. Li, Y. Li, L. Li Gioi, J. Libby, D. Liventsev, P. Lukin, M. Masuda, D. Matvienko, K. Miyabayashi, H. Miyata, R. Mizuk, G. B. Mohanty, S. Mohanty, A. Moll, H. K. Moon, T. Mori, E. Nakano, M. Nakao, T. Nanut, Z. Natkaniec, M. Nayak, N. K. Nisar, S. Nishida, S. Ogawa, S. Okuno, P. Pakhlov, G. Pakhlova, B. Pal, C. W. Park, H. Park, T. K. Pedlar, R. Pestotnik, M. Petric, L. E. Piilonen, C. Pulvermacher, E. Ribezl, M. Ritter, A. Rostomyan, H. Sahoo, Y. Sakai, S. Sandilya, L. Santelj, T. Sanuki, Y. Sato, V. Savinov, O. Schneider, G. Schnell, C. Schwanda, A. J. Schwartz, Y. Seino, K. Senyo, O. Seon, M. E. Sevior, V. Shebalin, C. P. Shen, T. -A. Shibata, J. -G. Shiu, F. Simon, Y. -S. Sohn, A. Sokolov, E. Solovieva, M. Staric, M. Sumihama, T. Sumiyoshi, U. Tamponi, Y. Teramoto, K. Trabelsi, M. Uchida, T. Uglov, Y. Unno, S. Uno, Y. Usov, C. Van Hulse, G. Varner, A. Vinokurova, A. Vossen, M. N. Wagner, C. H. Wang, M. -Z. Wang, P. Wang, M. Watanabe, Y. Watanabe, E. Won, H. Yamamoto, J. Yamaoka, S. Yashchenko, H. Ye, Y. Yook, Y. Yusa, Z. P. Zhang, V. Zhilich, V. Zhulanov, A. Zupanc

    PHYSICAL REVIEW D   93 ( 3 )   032010-1 - 032010-20   2016年2月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We present a measurement of the branching fraction and the longitudinal polarization fraction of B-0 -&gt; rho(+)rho(-) decays, as well as the time-dependent CP violating parameters in decays into longitudinally polarized rho(+)rho(-) pairs with Belle's final data set of 772 x 10(6) B (B) over bar pairs, at the Upsilon(4S) resonance, collected at the asymmetric-energy e(+)e(-) collider KEKB. We obtain B(B-0 -&gt; rho(+)rho(-)) = (28.3 +/- 1.5(stat) +/- 1.5(syst)) x 10(-6), f(L) = 0.988 +/- 0.012(stat) +/- 0.023(syst), A(CP) = 0.00 +/- 0.10(stat) +/- 0.06(syst), S-CP = -0.13 +/- 0.15(stat) +/- 0.05(syst). We perform an isospin analysis to constrain the Cabibbo-Kobayashi-Maskawa angle phi(2) and obtain two solutions with phi(2) = (93.7 +/- 10.6)degrees, being most compatible with other Standard-Model based fits to the data.

    DOI: 10.1103/PhysRevD.93.032010

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  • Search for B-0 -&gt; pi(-)tau(+)nu(tau) with hadronic tagging at Belle 査読

    P. Hamer, A. Frey, A. Abdesselam, I. Adachi, H. Aihara, S. Al Said, K. Arinstein, D. M. Asner, T. Aushev, R. Ayad, V. Babu, I. Badhrees, A. M. Bakich, E. Barberio, B. Bhuyan, J. Biswal, A. Bozek, M. Bracko, T. E. Browder, D. Cervenkov, V. Chekelian, A. Chen, B. G. Cheon, K. Chilikin, K. Cho, V. Chobanova, Y. Choi, D. Cinabro, J. Dalseno, M. Danilov, I. Danko, N. Dash, J. Dingfelder, Z. Dolezal, Z. Drasal, A. Drutskoy, D. Dutta, S. Eidelman, H. Farhat, J. E. Fast, T. Ferber, B. G. Fulsom, V. Gaur, N. Gabyshev, A. Garmash, D. Getzkow, R. Gillard, R. Glattauer, Y. M. Goh, P. Goldenzweig, B. Golob, D. Greenwald, J. Haba, T. Hara, J. Hasenbusch, K. Hayasaka, H. Hayashii, W. -S. Hou, T. Iijima, K. Inami, G. Inguglia, A. Ishikawa, R. Itoh, Y. Iwasaki, I. Jaegle, H. B. Jeon, D. Joffe, K. K. Joo, T. Julius, K. H. Kang, E. Kato, T. Kawasaki, C. Kiesling, D. Y. Kim, J. B. Kim, J. H. Kim, K. T. Kim, M. J. Kim, S. H. Kim, Y. J. Kim, K. Kinoshita, P. Kodys, S. Korpar, P. Krizan, P. Krokovny, T. Kuhr, A. Kuzmin, Y. -J. Kwon, J. S. Lange, D. H. Lee, I. S. Lee, H. Li, L. Li, Y. Li, J. Libby, Y. Liu, D. Liventsev, P. Lukin, M. Masuda, D. Matvienko, K. Miyabayashi, H. Miyake, H. Miyata, R. Mizuk, G. B. Mohanty, S. Mohanty, A. Moll, H. K. Moon, R. Mussa, E. Nakano, M. Nakao, T. Nanut, Z. Natkaniec, M. Nayak, N. K. Nisar, S. Nishida, S. Ogawa, S. Okuno, C. Oswald, P. Pakhlov, G. Pakhlova, B. Pal, H. Park, T. K. Pedlar, L. Pesantez, R. Pestotnik, M. Petric, L. E. Piilonen, C. Pulvermacher, J. Rauch, E. Ribezl, M. Ritter, A. Rostomyan, H. Sahoo, Y. Sakai, S. Sandilya, L. Santelj, T. Sanuki, V. Savinov, O. Schneider, G. Schnell, C. Schwanda, Y. Seino, K. Senyo, M. Shapkin, V. Shebalin, T. -A. Shibata, J. -G. Shiu, A. Sibidanov, F. Simon, Y. -S. Sohn, A. Sokolov, E. Solovieva, M. Staric, J. Stypula, T. Sumiyoshi, Y. Teramoto, K. Trabelsi, V. Trusov, M. Uchida, S. Uehara, Y. Unno, S. Uno, P. Urquijo, Y. Usov, C. Van Hulse, P. Vanhoefer, G. Varner, V. Vorobyev, A. Vossen, C. H. Wang, M. -Z. Wang, P. Wang, Y. Watanabe, E. Won, H. Yamamoto, J. Yamaoka, S. Yashchenko, Y. Yook, Z. P. Zhang, V. Zhilich, V. Zhulanov, A. Zupanc

    PHYSICAL REVIEW D   93 ( 3 )   032007-1 - 032007-10   2016年2月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We search for the process B-0 -&gt; pi(-) tau(+)nu(tau) using the full Belle data set of 711 fb(-1), corresponding to 772 x 10(6)B (B) over bar pairs, collected at the gamma (4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. We reconstruct one B meson in a hadronic decay and search for the B-0 -&gt; pi(-)tau(+)nu(tau) process in the remainder of the event. No significant signal is observed and an upper limit of B(B-0 -&gt; pi(-) tau(+)nu(tau)) &lt; 2.5 x 10(-4) is obtained at the 90% confidence level.

    DOI: 10.1103/PhysRevD.93.032007

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  • Measurement of D-0-(D)over-bar(0) mixing and search for CP violation in D-0 -&gt; K+K-, pi(+)pi(-) decays with the full Belle data set 査読

    M. Staric, A. Abdesselam, I. Adachi, H. Aihara, K. Arinstein, D. M. Asner, T. Aushev, R. Ayad, T. Aziz, V. Babu, I. Badhrees, S. Bahinipati, A. M. Bakich, V. Bansal, J. Biswal, A. Bondar, G. Bonvicini, A. Bozek, M. Bracko, T. E. Browder, D. Cervenkov, V. Chekelian, A. Chen, B. G. Cheon, K. Chilikin, R. Chistov, K. Cho, V. Chobanova, Y. Choi, D. Cinabro, J. Dalseno, M. Danilov, Z. Dolezal, D. Dutta, S. Eidelman, D. Epifanov, H. Farhat, J. E. Fast, T. Ferber, B. G. Fulsom, V. Gaur, N. Gabyshev, S. Ganguly, A. Garmash, R. Gillard, R. Glattauer, Y. M. Goh, R. Goldenzweig, B. Golob, J. Grygier, J. Haba, T. Hara, K. Hayasaka, H. Hayashii, X. H. He, W. -S. Hou, C. -L. Hsu, T. Iijima, K. Inami, G. Inguglia, A. Ishikawa, R. Itoh, I. Jaegle, D. Joffe, T. Julius, K. H. Kang, T. Kawasaki, T. Keck, C. Kiesling, D. Y. Kim, J. B. Kim, J. H. Kim, M. J. Kim, S. H. Kim, Y. J. Kim, K. Kinoshita, B. R. Ko, P. Kodys, S. Korpar, R. Krizan, P. Krokovny, T. Kumita, A. Kuzmin, Y-J. Kwon, J. S. Lange, I. S. Lee, R. Lewis, Y. Li, L. Li Gioi, J. Libby, D. Liventsev, R. Lukin, M. Masuda, D. Matvienko, K. Miyabayashi, H. Miyata, R. Mizuk, G. B. Mohanty, A. Moll, H. K. Moon, R. Mussa, M. Nakao, T. Nanut, Z. Natkaniec, N. K. Nisar, S. Nishida, S. Ogawa, S. Okuno, R. Pakhlov, G. Pakhlova, B. Pal, C. W. Park, H. Park, T. K. Pedlar, L. Pesantez, R. Pestotnik, M. Petric, L. E. Piilonen, E. Ribezl, M. Ritter, A. Rostomyan, Y. Sakai, S. Sandilya, T. Sanuki, V. Savinov, O. Schneider, G. Schnell, C. Schwanda, A. J. Schwartz, K. Senyo, V. Shebalin, C. P. Shen, T. -A. Shibata, J. -G. Shiu, B. Shwartz, F. Simon, Y. -S. Sohn, A. Sokolov, E. Solovieva, S. Stanic, M. Steder, M. Sumihama, U. Tamponi, Y. Teramoto, K. Trabelsi, M. Uchida, S. Uehara, T. Uglov, Y. Unno, S. Uno, R. Urquijo, Y. Usov, C. Van Hulse, R. Vanhoefer, G. Varner, A. Vinokurova, V. Vorobyev, M. N. Wagner, C. H. Wang, M. -Z. Wang, R. Wang, X. L. Wang, M. Watanabe, Y. Watanabe, K. M. Williams, E. Won, S. Yashchenko, Y. Yook, C. Z. Yuan, Z. P. Zhang, V. Zhilich, V. Zhulanov, M. Ziegler, A. Zupanc

    PHYSICS LETTERS B   753   412 - 418   2016年2月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:ELSEVIER SCIENCE BV  

    We report an improved measurement of D-0-(D) over bar (0) mixing and a search for CP violation in D-0 decays to CP-even final states K+K- and pi(+)pi(-). The measurement is based on the final Belle data sample of 976 fb(-1). The results are y(CP) = (1.11 +/- 0.22 +/- 0.09)% and A(Gamma) =(-0.03 +/- 0.20 +/- 0.07)%, where the first uncertainty is statistical and the second is systematic. (C) 2015 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).

    DOI: 10.1016/j.physletb.2015.12.025

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  • Measurements of the Upsilon(10860) and Upsilon(11020) resonances via sigma(e(+)e(-) -&gt; Upsilon(nS)pi(+)pi(-)) 査読

    D. Santel, K. Kinoshita, P. Chang, A. Abdesselam, I. Adachi, H. Aihara, S. Al Said, K. Arinstein, D. M. Asner, T. Aushev, R. Ayad, A. M. Bakich, V. Bansal, B. Bhuyan, A. Bobrov, A. Bondar, G. Bonvicini, M. Bracko, T. E. Browder, D. Cervenkov, V. Chekelian, B. G. Cheon, K. Chilikin, K. Cho, V. Chobanova, S. -K. Choi, Y. Choi, D. Cinabro, J. Dalseno, M. Danilov, J. Dingfelder, Z. Dolezal, Z. Drasal, A. Drutskoy, S. Eidelman, H. Farhat, J. E. Fast, T. Ferber, V. Gaur, N. Gabyshev, A. Garmash, D. Getzkow, R. Gillard, M. Goh, J. Haba, T. Hara, K. Hayasaka, H. Hayashii, X. H. He, W. -S. Hou, H. J. Hyun, T. Iijima, K. Inami, A. Ishikawa, R. Itoh, Y. Iwasaki, I. Jaegle, D. Joffe, T. Julius, K. H. Kang, E. Kato, T. Kawasaki, C. Kiesling, D. Y. Kim, H. J. Kim, J. B. Kim, J. H. Kim, M. J. Kim, S. H. Kim, Y. J. Kim, B. R. Ko, P. Kodys, S. Korpar, P. Krizan, P. Krokovny, A. Kuzmin, J. S. Lange, I. S. Lee, Y. Li, L. Li Gioi, J. Libby, D. Liventsev, P. Lukin, D. Matvienko, K. Miyabayashi, H. Miyata, R. Mizuk, G. B. Mohanty, A. Moll, T. Mori, R. Mussa, E. Nakano, M. Nakao, T. Nanut, Z. Natkaniec, N. K. Nisar, S. Nishida, S. Ogawa, S. Okuno, S. L. Olsen, C. Oswald, P. Pakhlov, G. Pakhlova, C. W. Park, H. Park, T. K. Pedlar, M. Petric, L. E. Piilonen, E. Ribezl, M. Ritter, A. Rostomyan, S. Ryu, Y. Sakai, S. Sandilya, L. Santelj, T. Sanuki, V. Savinov, O. Schneider, G. Schnell, C. Schwanda, A. J. Schwartz, K. Senyo, M. E. Sevior, V. Shebalin, T. -A. Shibata, J. -G. Shiu, B. Shwartz, A. Sibidanov, F. Simon, Y. -S. Sohn, E. Solovieva, M. Staric, M. Steder, U. Tamponi, G. Tatishvili, Y. Teramoto, K. Trabelsi, M. Uchida, S. Uehara, T. Uglov, Y. Unno, S. Uno, C. Van Hulse, P. Vanhoefer, G. Varner, A. Vinokurova, M. N. Wagner, P. Wang, X. L. Wang, M. Watanabe, Y. Watanabe, E. Won, J. Yamaoka, Y. -P. Yang, S. Yashchenko, Y. Yook, Y. Yusa, Z. P. Zhang, V. Zhilich, V. Zhulanov, A. Zupanc

    PHYSICAL REVIEW D   93 ( 1 )   011101-1 - 011101-6   2016年1月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We report new measurements of the total cross sections for e(+)e(-) -&gt; Upsilon(nS)pi(+)pi(-) (n = 1, 2, 3) and e(+)e(-) -&gt; b (b) over bar from a high-luminosity fine scan of the region root s = 10.63-11.05 GeV with the Belle detector. We observe that the Upsilon(nS)pi(+)pi(-) spectra have little or no nonresonant component and extract from them the masses and widths of Upsilon(10860) and Upsilon(11020) and their relative phase. We find M-10860 = (10891.1 +/- 3.2(-1.7)(+0.6)) MeV/c(2) and Gamma(10860) = (53.7(-5.6)(-5.4)(+7.1)(+1.3)) MeV and report first measurements M-11020 = (1098(-2.5)(-2.1)(+6.4)(+9.0)) MeV/c(2), Gamma(11020) = (61(-19)(-20)(+9)(+2)) MeV, and phi(11020) - phi 10860 = (-1.0 +/- 0.4(-0.1)(+1.4)) rad.

    DOI: 10.1103/PhysRevD.93.011101

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  • First observation of the decay B0 →ψ (2S)π0 査読

    V. Chobanova, J. Dalseno, J. Dalseno, C. Kiesling, A. Abdesselam, I. Adachi, I. Adachi, H. Aihara, D. M. Asner, T. Aushev, R. Ayad, V. Babu, I. Badhrees, I. Badhrees, S. Bahinipati, A. M. Bakich, E. Barberio, P. Behera, V. Bhardwaj, B. Bhuyan, J. Biswal, A. Bobrov, A. Bobrov, A. Bozek, M. Bračko, M. Bračko, T. E. Browder, D. Červenkov, V. Chekelian, A. Chen, B. G. Cheon, R. Chistov, K. Cho, Y. Choi, D. Cinabro, N. Dash, Z. DoleŽal, Z. Drásal, A. Drutskoy, S. Eidelman, S. Eidelman, H. Farhat, J. E. Fast, T. Ferber, B. G. Fulsom, V. Gaur, N. Gabyshev, N. Gabyshev, A. Garmash, A. Garmash, R. Gillard, Y. M. Goh, P. Goldenzweig, B. Golob, B. Golob, O. Grzymkowska, J. Haba, J. Haba, T. Hara, T. Hara, K. Hayasaka, H. Hayashii, W. S. Hou, T. Iijima, T. Iijima, K. Inami, A. Ishikawa, Y. Iwasaki, I. Jaegle, H. B. Jeon, D. Joffe, K. K. Joo, T. Julius, E. Kato, P. Katrenko, T. Kawasaki, D. Y. Kim, H. J. Kim, J. B. Kim, K. T. Kim, M. J. Kim, S. H. Kim, Y. J. Kim, K. Kinoshita, P. Kodyš, S. Korpar, S. Korpar, P. KriŽan, P. KriŽan, P. Krokovny, P. Krokovny, T. Kuhr, R. Kumar, T. Kumita, A. Kuzmin, A. Kuzmin, Y. J. Kwon, I. S. Lee, H. Li, L. Li

    Physical Review D - Particles, Fields, Gravitation and Cosmology   93 ( 3 )   2015年12月

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    © 2016 American Physical Society. We report a measurement of the B0→ψ(2S)π0 branching fraction based on the full (4S) data set of 772×106 BB¯ pairs collected by the Belle detector at the KEKB asymmetric-energy e+e- collider. We obtain B(B0→ψ(2S)π0)=(1.17±0.17(stat)±0.08(syst))×10-5. The result has a significance of 7.2 standard deviations and is the first observation of the decay B0→ψ(2S)π0.

    DOI: 10.1103/PhysRevD.93.031101

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  • Search for the rare decay D0 →γγ at Belle 査読

    N. K. Nisar, N. K. Nisar, G. B. Mohanty, K. Trabelsi, K. Trabelsi, T. Aziz, A. Abdesselam, I. Adachi, I. Adachi, H. Aihara, D. M. Asner, V. Aulchenko, V. Aulchenko, T. Aushev, T. Aushev, R. Ayad, V. Babu, I. Badhrees, I. Badhrees, S. Bahinipati, E. Barberio, P. Behera, V. Bhardwaj, J. Biswal, A. Bobrov, A. Bobrov, A. Bozek, M. Bračko, M. Bračko, F. Breibeck, T. E. Browder, D. Červenkov, V. Chekelian, A. Chen, B. G. Cheon, R. Chistov, K. Cho, V. Chobanova, Y. Choi, D. Cinabro, J. Dalseno, J. Dalseno, N. Dash, Z. DoleŽal, Z. Drásal, A. Drutskoy, A. Drutskoy, D. Dutta, S. Eidelman, S. Eidelman, H. Farhat, J. E. Fast, B. G. Fulsom, V. Gaur, A. Garmash, A. Garmash, R. Gillard, Y. M. Goh, P. Goldenzweig, B. Golob, B. Golob, D. Greenwald, O. Grzymkowska, J. Haba, J. Haba, T. Hara, T. Hara, K. Hayasaka, H. Hayashii, X. H. He, W. S. Hou, K. Inami, A. Ishikawa, Y. Iwasaki, W. W. Jacobs, I. Jaegle, H. B. Jeon, D. Joffe, K. K. Joo, T. Julius, K. H. Kang, E. Kato, T. Kawasaki, C. Kiesling, D. Y. Kim, H. J. Kim, K. T. Kim, M. J. Kim, S. H. Kim, K. Kinoshita, P. Kodyš, S. Korpar, S. Korpar, P. KriŽan, P. KriŽan, P. Krokovny, P. Krokovny, T. Kuhr, R. Kumar, T. Kumita

    Physical Review D - Particles, Fields, Gravitation and Cosmology   93 ( 5 )   2015年12月

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    © 2016 American Physical Society. We search for the rare radiative decay D0→γγ using a data sample with an integrated luminosity of 832 fb-1 recorded by the Belle detector at the KEKB e+e- asymmetric-energy collider. We find no statistically significant signal and set an upper limit on the branching fraction of B(D0→γγ)&lt;8.5×10-7 at 90% confidence level. This is the most restrictive limit on the decay channel to date.

    DOI: 10.1103/PhysRevD.93.051102

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  • Inclusive cross sections for pairs of identified light charged hadrons and for single protons in e+e- at s =10.58 GeV 査読

    R. Seidl, A. Abdesselam, I. Adachi, H. Aihara, S. Al Said, D. M. Asner, T. Aushev, R. Ayad, V. Babu, I. Badhrees, A. M. Bakich, E. Barberio, V. Bhardwaj, B. Bhuyan, J. Biswal, A. Bozek, M. Bračko, T. E. Browder, D. Červenkov, V. Chekelian, A. Chen, B. G. Cheon, K. Chilikin, K. Cho, V. Chobanova, Y. Choi, D. Cinabro, J. Dalseno, N. Dash, J. Dingfelder, Z. DoleŽal, Z. Drásal, D. Dutta, S. Eidelman, H. Farhat, J. E. Fast, T. Ferber, B. G. Fulsom, V. Gaur, N. Gabyshev, A. Garmash, R. Gillard, F. Giordano, Y. M. Goh, P. Goldenzweig, B. Golob, J. Haba, T. Hara, K. Hayasaka, H. Hayashii, X. H. He, W. S. Hou, C. L. Hsu, T. Iijima, K. Inami, A. Ishikawa, R. Itoh, Y. Iwasaki, W. W. Jacobs, I. Jaegle, D. Joffe, K. K. Joo, K. H. Kang, E. Kato, P. Katrenko, T. Kawasaki, D. Y. Kim, H. J. Kim, J. B. Kim, J. H. Kim, K. T. Kim, M. J. Kim, S. H. Kim, Y. J. Kim, P. Kodyš, S. Korpar, P. KriŽan, P. Krokovny, A. Kuzmin, Y. J. Kwon, J. S. Lange, D. H. Lee, L. Li, L. Li Gioi, J. Libby, Y. Liu, D. Liventsev, P. Lukin, M. Masuda, D. Matvienko, K. Miyabayashi, H. Miyake, H. Miyata, R. Mizuk, S. Mohanty, A. Moll, H. K. Moon, T. Mori, R. Mussa, E. Nakano

    Physical Review D - Particles, Fields, Gravitation and Cosmology   92 ( 9 )   2015年11月

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    掲載種別:研究論文(学術雑誌)  

    © 2015 American Physical Society. We report the first double differential cross sections of two charged pions and kaons (e+e-→hhX) in electron-positron annihilation as a function of the fractional energies of the two hadrons for any charge and hadron combination. The dependence of these dihadron cross sections on the topology (same, opposite hemisphere or anywhere) is also studied with the help of the event shape variable thrust and its axis. The ratios of these dihadron cross sections for different charges and hadron combinations directly shed light on the contributing fragmentation functions. For example, we find that the ratio of same-sign pion pairs over opposite-sign pion pairs drops toward higher fractional energies where disfavored fragmentation is expected to be suppressed. These dihadron results are obtained from a 655 fb-1 data sample collected near the (4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. Extending the previously published single-pion and single-kaon cross sections, single-proton (e+e-→pX) cross sections are extracted from a 159 fb-1 data subsample.

    DOI: 10.1103/PhysRevD.92.092007

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  • Inclusive cross sections for pairs of identified light charged hadrons and for single protons in e(+)e(-) at root s=10.58 GeV 査読

    R. Seidl, A. Abdesselam, I. Adachi, H. Aihara, S. Al Said, D. M. Asner, T. Aushev, R. Ayad, V. Babu, I. Badhrees, A. M. Bakich, E. Barberio, V. Bhardwaj, B. Bhuyan, J. Biswal, A. Bozek, M. Bracko, T. E. Browder, D. Cervenkov, V. Chekelian, A. Chen, B. G. Cheon, K. Chilikin, K. Cho, V. Chobanova, Y. Choi, D. Cinabro, J. Dalseno, N. Dash, J. Dingfelder, Z. Dolezal, Z. Drasal, D. Dutta, S. Eidelman, H. Farhat, J. E. Fast, T. Ferber, B. G. Fulsom, V. Gaur, N. Gabyshev, A. Garmash, R. Gillard, F. Giordano, Y. M. Goh, P. Goldenzweig, B. Golob, J. Haba, T. Hara, K. Hayasaka, H. Hayashii, X. H. He, W. -S. Hou, C. -L. Hsu, T. Iijima, K. Inami, A. Ishikawa, R. Itoh, Y. Iwasaki, W. W. Jacobs, I. Jaegle, D. Joffe, K. K. Joo, K. H. Kang, E. Kato, P. Katrenko, T. Kawasaki, D. Y. Kim, H. J. Kim, J. B. Kim, J. H. Kim, K. T. Kim, M. J. Kim, S. H. Kim, Y. J. Kim, P. Kodys, S. Korpar, P. Krizan, P. Krokovny, A. Kuzmin, Y. -J. Kwon, J. S. Lange, D. H. Lee, L. Li, L. Li Gioi, J. Libby, Y. Liu, D. Liventsev, P. Lukin, M. Masuda, D. Matvienko, K. Miyabayashi, H. Miyake, H. Miyata, R. Mizuk, S. Mohanty, A. Moll, H. K. Moon, T. Mori, R. Mussa, E. Nakano, M. Nakao, T. Nanut, Z. Natkaniec, M. Nayak, M. Niiyama, N. K. Nisar, S. Nishida, S. Ogawa, S. Okuno, C. Oswald, P. Pakhlov, G. Pakhlova, B. Pal, C. W. Park, H. Park, T. K. Pedlar, R. Pestotnik, M. Petric, L. E. Piilonen, E. Ribezl, M. Ritter, A. Rostomyan, S. Ryu, H. Sahoo, K. Sakai, Y. Sakai, S. Sandilya, L. Santelj, T. Sanuki, V. Savinov, O. Schneider, G. Schnell, C. Schwanda, Y. Seino, K. Senyo, O. Seon, M. E. Sevior, V. Shebalin, T. -A. Shibata, J. -G. Shiu, F. Simon, Y. -S. Sohn, A. Sokolov, E. Solovieva, M. Staric, M. Sumihama, K. Sumisawa, T. Sumiyoshi, U. Tamponi, Y. Teramoto, V. Trusov, M. Uchida, T. Uglov, Y. Unno, S. Uno, Y. Usov, C. Van Hulse, P. Vanhoefer, G. Varner, V. Vorobyev, A. Vossen, M. N. Wagner, C. H. Wang, M. -Z. Wang, P. Wang, M. Watanabe, Y. Watanabe, K. M. Williams, E. Won, J. Yamaoka, S. Yashchenko, J. Yelton, Y. Yusa, Z. P. Zhang, V. Zhilich, V. Zhulanov

    PHYSICAL REVIEW D   92 ( 9 )   092007-1 - 092007-25   2015年11月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We report the first double differential cross sections of two charged pions and kaons (e(+)e(-) -&gt; hhX) in electron-positron annihilation as a function of the fractional energies of the two hadrons for any charge and hadron combination. The dependence of these dihadron cross sections on the topology (same, opposite hemisphere or anywhere) is also studied with the help of the event shape variable thrust and its axis. The ratios of these dihadron cross sections for different charges and hadron combinations directly shed light on the contributing fragmentation functions. For example, we find that the ratio of same-sign pion pairs over opposite-sign pion pairs drops toward higher fractional energies where disfavored fragmentation is expected to be suppressed. These dihadron results are obtained from a 655 fb(-1) data sample collected near the gamma (4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. Extending the previously published single-pion and single-kaon cross sections, single-proton (e(+)e(-) -&gt; pX) cross sections are extracted from a 159 fb(-1) data subsample.

    DOI: 10.1103/PhysRevD.92.092007

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  • Observation of B-0 -&gt; p(Lambda)over-barD(*)(-) 査読

    Y. -Y. Chang, M. -Z. Wang, A. Abdesselam, I. Adachi, K. Adamczyk, H. Aihara, S. Al Said, D. M. Asner, H. Atmacan, T. Aushev, V. Babu, I. Badhrees, A. M. Bakich, E. Barberio, B. Bhuyan, J. Biswal, A. Bobrov, A. Bozek, M. Bracko, T. E. Browder, D. Cervenkov, V. Chekelian, A. Chen, B. G. Cheon, K. Chilikin, R. Chistov, V. Chobanova, S. -K. Choi, Y. Choi, D. Cinabro, J. Dalseno, M. Danilov, J. Dingfelder, Z. Dolezal, Z. Drasal, D. Dutta, S. Eidelman, H. Farhat, J. E. Fast, T. Ferber, B. G. Fulsom, V. Gaur, N. Gabyshev, S. Ganguly, A. Garmash, R. Gillard, R. Glattauer, Y. M. Goh, P. Goldenzweig, D. Greenwald, O. Grzymkowska, J. Haba, K. Hayasaka, H. Hayashii, X. H. He, W. -S. Hou, C. -L. Hsu, T. Iijima, K. Inami, A. Ishikawa, R. Itoh, Y. Iwasaki, W. W. Jacobs, I. Jaegle, D. Joffe, K. K. Joo, T. Kawasaki, D. Y. Kim, H. J. Kim, J. B. Kim, J. H. Kim, K. T. Kim, M. J. Kim, S. H. Kim, Y. J. Kim, K. Kinoshita, S. Korpar, P. Krizan, P. Krokovny, T. Kuhr, T. Kumita, A. Kuzmin, Y. -J. Kwon, Y. -T. Lai, I. S. Lee, L. Li, Y. Li, J. Libby, D. Liventsev, P. Lukin, M. Masuda, D. Matvienko, K. Miyabayashi, H. Miyake, H. Miyata, R. Mizuk, G. B. Mohanty, S. Mohanty, A. Moll, H. K. Moon, T. Mori, E. Nakano, M. Nakao, T. Nanut, M. Nayak, S. Nishida, S. Ogawa, H. Ozaki, P. Pakhlov, G. Pakhlova, B. Pal, C. W. Park, T. K. Pedlar, R. Pestotnik, M. Petric, L. E. Piilonen, J. Rauch, E. Ribezl, M. Ritter, A. Rostomyan, S. Ryu, H. Sahoo, Y. Sakai, S. Sandilya, L. Santelj, T. Sanuki, V. Savinov, O. Schneider, G. Schnell, C. Schwanda, Y. Seino, K. Senyo, I. S. Seong, M. E. Sevior, V. Shebalin, C. P. Shen, T. -A. Shibata, J. -G. Shiu, F. Simon, Y. -S. Sohn, M. Staric, J. Stypula, M. Sumihama, K. Sumisawa, T. Sumiyoshi, U. Tamponi, K. Tanida, Y. Teramoto, T. Uglov, Y. Unno, S. Uno, Y. Usov, C. Van Hulse, P. Vanhoefer, G. Varner, V. Vorobyev, A. Vossen, M. N. Wagner, C. H. Wang, P. Wang, M. Watanabe, Y. Watanabe, K. M. Williams, E. Won, J. Yamaoka, S. Yashchenko, J. Yelton, Y. Yusa, Z. P. Zhang, V. Zhilich, V. Zhulanov, A. Zupanc

    PHYSICAL REVIEW LETTERS   115 ( 22 )   221803-1 - 221803-8   2015年11月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We report the first observation of the decays B-0 -&gt; p (Lambda) over barD(*)(-). The data sample of 711 fb(-1) used in this analysis corresponds to 772 x 10(6) B (B) over bar pairs, collected at the Upsilon(4S) resonance by the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. We observe 19.8 sigma and 10.8 sigma excesses of events for the two decay modes and measure the branching fractions of B-0 -&gt; p (Lambda) over barD(-) and B-0 -&gt; p (Lambda) over barD*(-) to be (25.1 +/- 2.6 +/- 3.5) x 10(-6) and (33.6 +/- 6.3 +/- 4.4) x 10(-6), respectively, where the first uncertainties are statistical and the second are systematic. These results are not compatible with the predictions based on the generalized factorization approach. In addition, a threshold enhancement in the dibaryon (p (Lambda) over bar) system is observed, consistent with that observed in similar B decays.

    DOI: 10.1103/PhysRevLett.115.221803

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  • Measurement of the branching ratio of B ¯ →d (∗)τ- ν ¯ τ relative to B ¯ →d (∗) - ν ¯ decays with hadronic tagging at Belle 査読

    M. Huschle, T. Kuhr, M. Heck, P. Goldenzweig, A. Abdesselam, I. Adachi, K. Adamczyk, H. Aihara, S. Al Said, K. Arinstein, D. M. Asner, T. Aushev, R. Ayad, T. Aziz, I. Badhrees, A. M. Bakich, V. Bansal, E. Barberio, V. Bhardwaj, B. Bhuyan, J. Biswal, A. Bobrov, A. Bozek, M. Bračko, T. E. Browder, D. Červenkov, P. Chang, V. Chekelian, A. Chen, B. G. Cheon, K. Chilikin, R. Chistov, K. Cho, V. Chobanova, Y. Choi, D. Cinabro, J. Dalseno, M. Danilov, Z. DoleŽal, Z. Drásal, D. Dutta, S. Eidelman, D. Epifanov, H. Farhat, J. E. Fast, T. Ferber, A. Frey, B. G. Fulsom, V. Gaur, N. Gabyshev, A. Garmash, R. Gillard, R. Glattauer, Y. M. Goh, B. Golob, J. Grygier, P. Hamer, K. Hara, T. Hara, J. Hasenbusch, K. Hayasaka, H. Hayashii, X. H. He, M. Heider, A. Heller, T. Horiguchi, W. S. Hou, C. L. Hsu, T. Iijima, K. Inami, G. Inguglia, A. Ishikawa, R. Itoh, Y. Iwasaki, I. Jaegle, D. Joffe, K. K. Joo, T. Julius, K. H. Kang, E. Kato, P. Katrenko, T. Kawasaki, T. Keck, C. Kiesling, D. Y. Kim, H. J. Kim, J. B. Kim, J. H. Kim, K. T. Kim, M. J. Kim, S. H. Kim, Y. J. Kim, K. Kinoshita, B. R. Ko, N. Kobayashi, P. Kodyš, S. Korpar, P. KriŽan, P. Krokovny, T. Kumita

    Physical Review D - Particles, Fields, Gravitation and Cosmology   92 ( 7 )   2015年10月

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    掲載種別:研究論文(学術雑誌)  

    © 2015 American Physical Society. © 2015 American Physical Society. We report a measurement of the branching fraction ratios R(D(∗)) of B¯→D(∗)τ-ν¯τ relative to B¯→D(∗) -ν¯ (where =e or μ) using the full Belle data sample of 772×106BB¯ pairs collected at the (4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. The measured values are R(D)=0.375±0.064(stat)±0.026(syst) and R(D∗)=0.293±0.038(stat)±0.015(syst). The analysis uses hadronic reconstruction of the tag-side B meson and purely leptonic τ decays. The results are consistent with earlier measurements and do not show a significant deviation from the standard model prediction.

    DOI: 10.1103/PhysRevD.92.072014

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  • Study of B0 → ρ+ ρ- Decays and implications for the CKM angle φ 2 査読

    P. Vanhoefer, J. Dalseno, J. Dalseno, C. Kiesling, A. Abdesselam, I. Adachi, I. Adachi, H. Aihara, S. Al Said, S. Al Said, K. Arinstein, K. Arinstein, D. M. Asner, H. Atmacan, T. Aushev, T. Aziz, V. Babu, I. Badhrees, I. Badhrees, A. M. Bakich, V. Bansal, E. Barberio, P. Behera, B. Bhuyan, J. Biswal, A. Bobrov, A. Bobrov, A. Bozek, M. Bračko, M. Bračko, T. E. Browder, D. Červenkov, P. Chang, V. Chekelian, A. Chen, B. G. Cheon, K. Chilikin, R. Chistov, V. Chobanova, S. K. Choi, Y. Choi, D. Cinabro, M. Danilov, N. Dash, J. Dingfelder, Z. DoleŽal, Z. Drásal, D. Dutta, S. Eidelman, S. Eidelman, H. Farhat, J. E. Fast, T. Ferber, B. G. Fulsom, V. Gaur, N. Gabyshev, N. Gabyshev, A. Garmash, A. Garmash, R. Gillard, Y. M. Goh, P. Goldenzweig, B. Golob, B. Golob, D. Greenwald, J. Haba, J. Haba, P. Hamer, T. Hara, T. Hara, K. Hayasaka, H. Hayashii, X. H. He, T. Horiguchi, W. S. Hou, T. Iijima, T. Iijima, K. Inami, A. Ishikawa, R. Itoh, R. Itoh, Y. Iwasaki, W. W. Jacobs, I. Jaegle, D. Joffe, K. K. Joo, T. Julius, K. H. Kang, E. Kato, P. Katrenko, T. Kawasaki, D. Y. Kim, H. J. Kim, J. B. Kim, J. H. Kim, K. T. Kim, M. J. Kim, S. H. Kim, Y. J. Kim, K. Kinoshita

    Physical Review D - Particles, Fields, Gravitation and Cosmology   93 ( 3 )   2015年10月

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    © 2016 American Physical Society. We present a measurement of the branching fraction and the longitudinal polarization fraction of B0→ρ+ρ- decays, as well as the time-dependent CP violating parameters in decays into longitudinally polarized ρ+ρ- pairs with Belle&#039;s final data set of 772×106 BB¯ pairs, at the (4S) resonance, collected at the asymmetric-energy e+e- collider KEKB. We obtain B(B0→ρ+ρ-)=(28.3±1.5(stat)±1.5(syst))×10-6, fL=0.988±0.012(stat)±0.023(syst), ACP=0.00±0.10(stat)±0.06(syst), SCP=-0.13±0.15(stat)±0.05(syst). We perform an isospin analysis to constrain the Cabibbo-Kobayashi-Maskawa angle φ2 and obtain two solutions with φ2=(93.7±10.6)°, being most compatible with other Standard-Model based fits to the data.

    DOI: 10.1103/PhysRevD.93.032010

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  • Measurement of the branching ratio of (B)over-bar -&gt; D-(*())tau(-)(nu)over-bar(tau) relative to (B)over-bar -&gt; D(*)l(-)(nu)over-bar(l) decays with hadronic tagging at Belle 査読

    M. Huschle, T. Kuhr, M. Heck, P. Goldenzweig, A. Abdesselam, I. Adachi, K. Adamczyk, H. Aihara, S. Al Said, K. Arinstein, D. M. Asner, T. Aushev, R. Ayad, T. Aziz, I. Badhrees, A. M. Bakich, V. Bansal, E. Barberio, V. Bhardwaj, B. Bhuyan, J. Biswal, A. Bobrov, A. Bozek, M. Bracko, T. E. Browder, D. Cervenkov, P. Chang, V. Chekelian, A. Chen, B. G. Cheon, K. Chilikin, R. Chistov, K. Cho, V. Chobanova, Y. Choi, D. Cinabro, J. Dalseno, M. Danilov, Z. Dolezal, Z. Drasal, D. Dutta, S. Eidelman, D. Epifanov, H. Farhat, J. E. Fast, T. Ferber, A. Frey, B. G. Fulsom, V. Gaur, N. Gabyshev, A. Garmash, R. Gillard, R. Glattauer, Y. M. Goh, B. Golob, J. Grygier, P. Hamer, K. Hara, T. Hara, J. Hasenbusch, K. Hayasaka, H. Hayashii, X. H. He, M. Heider, A. Heller, T. Horiguchi, W-S. Hou, C-L. Hsu, T. Iijima, K. Inami, G. Inguglia, A. Ishikawa, R. Itoh, Y. Iwasaki, I. Jaegle, D. Joffe, K. K. Joo, T. Julius, K. H. Kang, E. Kato, P. Katrenko, T. Kawasaki, T. Keck, C. Kiesling, D. Y. Kim, H. J. Kim, J. B. Kim, J. H. Kim, K. T. Kim, M. J. Kim, S. H. Kim, Y. J. Kim, K. Kinoshita, B. R. Ko, N. Kobayashi, P. Kodys, S. Korpar, P. Krizan, P. Krokovny, T. Kumita, A. Kuzmin, Y-J. Kwon, I. S. Lee, C. Li, Y. Li, L. Li Gioi, J. Libby, D. Liventsev, P. Lukin, M. Masuda, D. Matvienko, K. Miyabayashi, H. Miyake, H. Miyata, R. Mizuk, G. B. Mohanty, S. Mohanty, A. Moll, H. K. Moon, R. Mussa, K. R. Nakamura, E. Nakano, M. Nakao, T. Nanut, M. Nayak, N. K. Nisar, S. Nishida, S. Ogawa, S. Okuno, C. Oswald, G. Pakhlova, B. Pal, C. W. Park, H. Park, T. K. Pedlar, L. Pesantez, R. Pestotnik, M. Petric, L. E. Piilonen, C. Pulvermacher, E. Ribezl, M. Ritter, A. Rostomyan, Y. Sakai, S. Sandilya, L. Santelj, T. Sanuki, Y. Sato, V. Savinov, O. Schneider, G. Schnell, C. Schwanda, A. J. Schwartz, D. Semmler, K. Senyo, O. Seon, M. E. Sevior, V. Shebalin, C. P. Shen, T-A. Shibata, J-G. Shiu, F. Simon, Y. -S. Sohn, A. Sokolov, E. Solovieva, S. Stanic, M. Staric, M. Steder, J. Stypula, M. Sumihama, T. Sumiyoshi, U. Tamponi, Y. Teramoto, K. Trabelsi, V. Trusov, M. Uchida, T. Uglov, S. Uno, Y. Usov, C. Van Hulse, P. Vanhoefer, G. Varner, A. Vinokurova, V. Vorobyev, M. N. Wagner, C. H. Wang, M-Z. Wang, P. Wang, X. L. Wang, M. Watanabe, Y. Watanabe, E. Won, H. Yamamoto, J. Yamaoka, S. Yashchenko, H. Ye, Y. Yook, C. Z. Yuan, Y. Yusa, Z. P. Zhang, V. Zhilich, V. Zhulanov, A. Zupanc

    PHYSICAL REVIEW D   92 ( 7 )   072014-1 - 072014-14   2015年10月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We report a measurement of the branching fraction ratios R(D)(()*()) of (B) over bar -&gt; D-(*())tau(-)(nu) over bar (tau) relative to (B) over bar -&gt; D-(*())l(-)(nu) over barl (where l = e or mu) using the full Belle data sample of 772 x 10(6)B (B) over bar pairs collected at the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. The measured values are R(D) = 0.375 +/- 0.064(stat) +/- 0.026(syst) and R(D*) = 0.293 +/- 0.038 (stat) +/- 0.015 (syst). The analysis uses hadronic reconstruction of the tag-side B meson and purely leptonic t decays. The results are consistent with earlier measurements and do not show a significant deviation from the standard model prediction.

    DOI: 10.1103/PhysRevD.92.072014

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  • Measurement of the branching fraction of B+ -&gt; tau(+)nu(tau) decays with the semileptonic tagging method 査読

    B. Kronenbitter, M. Heck, P. Goldenzweig, T. Kuhr, A. Abdesselam, I. Adachi, H. Aihara, S. Al Said, K. Arinstein, D. M. Asner, T. Aushev, R. Ayad, T. Aziz, A. M. Bakich, V. Bansal, E. Barberio, V. Bhardwaj, A. Bondar, G. Bonvicini, A. Bozek, M. Bracko, T. E. Browder, D. Cervenkov, V. Chekelian, A. Chen, B. G. Cheon, K. Chilikin, R. Chistov, K. Cho, V. Chobanova, Y. Choi, D. Cinabro, J. Dalseno, M. Danilov, J. Dingfelder, Z. Dolezal, Z. Drasal, A. Drutskoy, D. Dutta, S. Eidelman, D. Epifanov, H. Farhat, J. E. Fast, T. Ferber, O. Frost, B. G. Fulsom, V. Gaur, N. Gabyshev, A. Garmash, D. Getzkow, R. Gillard, R. Glattauer, B. Golob, J. Grygier, K. Hayasaka, H. Hayashii, X. H. He, M. Heider, A. Heller, T. Horiguchi, M. Huschle, T. Iijima, K. Inami, A. Ishikawa, R. Itoh, Y. Iwasaki, I. Jaegle, K. K. Joo, T. Julius, K. H. Kang, E. Kato, D. Y. Kim, H. J. Kim, J. B. Kim, J. H. Kim, K. T. Kim, M. J. Kim, S. H. Kim, Y. J. Kim, K. Kinoshita, B. R. Ko, P. Kodys, P. Krizan, P. Krokovny, A. Kuzmin, Y. -J. Kwon, J. S. Lange, D. H. Lee, I. S. Lee, P. Lewis, L. Li Gioi, J. Libby, D. Liventsev, P. Lukin, D. Matvienko, H. Miyata, R. Mizuk, G. B. Mohanty, S. Mohanty, A. Moll, H. K. Moon, R. Mussa, E. Nakano, M. Nakao, T. Nanut, Z. Natkaniec, M. Nayak, N. K. Nisar, S. Nishida, S. Okuno, S. L. Olsen, W. Ostrowicz, C. Oswald, P. Pakhlov, G. Pakhlova, H. Park, T. K. Pedlar, L. Pesantez, R. Pestotnik, M. Petric, L. E. Piilonen, C. Pulvermacher, E. Ribezl, M. Ritter, A. Rostomyan, S. Ryu, Y. Sakai, L. Santelj, T. Sanuki, Y. Sato, V. Savinov, O. Schneider, G. Schnell, M. Schram, C. Schwanda, A. J. Schwartz, K. Senyo, O. Seon, M. E. Sevior, V. Shebalin, T. -A. Shibata, J. -G. Shiu, B. Shwartz, A. Sibidanov, F. Simon, Y. -S. Sohn, A. Sokolov, E. Solovieva, S. Stanic, M. Staric, M. Steder, T. Sumiyoshi, U. Tamponi, Y. Teramoto, K. Trabelsi, M. Uchida, S. Uehara, T. Uglov, Y. Unno, S. Uno, P. Urquijo, Y. Usov, C. Van Hulse, P. Vanhoefer, G. Varner, A. Vinokurova, A. Vossen, M. N. Wagner, C. H. Wang, M. -Z Wang, P. Wang, M. Watanabe, Y. Watanabe, K. M. Williams, E. Won, H. Yamamoto, S. Yashchenko, Y. Yook, Z. P. Zhang, V. Zhilich, V. Zhulanov, M. Ziegler, A. Zupanc

    PHYSICAL REVIEW D   92 ( 5 )   051102-1 - 051102-8   2015年9月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We report a measurement of the branching fraction of B+ -&gt; tau(+) nu(tau) decays using a data sample of 772 x 10(6) B (B) over bar pairs, collected at the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. We reconstruct the accompanying B meson in a semileptonic decay and detect the recoiling B candidate in the decay channel B+ -&gt; tau(+) nu(tau). We obtain a branching fraction of B(B+ -&gt; tau(+) nu(tau)) = [1.25 +/- 0.28(stat.) +/- 0.27(syst.)] x 10-(4). This result is in good agreement with previous measurements and the expectation from the calculation based on the Standard Model.

    DOI: 10.1103/PhysRevD.92.051102

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  • First Observation of CP Violation in (B)over-bar(0) -&gt; D(CP)((*))h(0) Decays by a Combined Time-Dependent Analysis of BABAR and Belle Data 査読

    A. Abdesselam, I. Adachi, A. Adametz, T. Adye, H. Ahmed, H. Aihara, S. Akar, M. S. Alam, J. Albert, S. Al Said, R. Andreassen, C. Angelini, F. Anulli, K. Arinstein, N. Arnaud, D. M. Asner, D. Aston, V. Aulchenko, T. Aushev, R. Ayad, V. Babu, I. Badhrees, S. Bahinipati, A. M. Bakich, H. R. Band, Sw. Banerjee, E. Barberio, D. J. Bard, R. J. Barlow, G. Batignani, A. Beaulieu, M. Bellis, E. Ben-Haim, D. Bernard, F. U. Bernlochner, S. Bettarini, D. Bettoni, A. J. Bevan, V. Bhardwaj, B. Bhuyan, F. Bianchi, M. Biasini, J. Biswal, V. E. Blinov, P. C. Bloom, A. Bobrov, M. Bomben, A. Bondar, G. R. Bonneaud, G. Bonvicini, A. Bozek, C. Bozzi, M. Bracko, H. Briand, T. E. Browder, D. N. Brown, D. N. Brown, C. Buenger, P. R. Burchat, A. R. Buzykaev, R. Calabrese, A. Calcaterra, G. Calderini, M. Carpinelli, C. Cartaro, G. Casarosa, R. Cenci, D. Cervenkov, P. Chang, D. S. Chao, J. Chauveau, R. Cheaib, V. Chekelian, A. Chen, C. Chen, C. H. Cheng, B. G. Cheon, K. Chilikin, R. Chistov, K. Cho, V. Chobanova, H. H. F. Choi, S-K. Choi, M. Chrzaszcz, G. Cibinetto, D. Cinabro, J. Cochran, J. P. Coleman, R. Contri, M. R. Convery, G. Cowan, R. Cowan, L. Cremaldi, J. Dalseno, S. Dasu, M. Davier, C. L. Davis, F. De Mori, G. De Nardo, A. G. Denig, D. Derkach, R. de Sangro, B. Dey, F. Di Lodovico, J. Dingfelder, S. Dittrich, Z. Dolezal, J. Dorfan, Z. Drasal, A. Drutskoy, V. P. Druzhinin, G. P. Dubois-Felsmann, W. Dunwoodie, D. Dutta, M. Ebert, B. Echenard, S. Eidelman, G. Eigen, A. M. Eisner, S. Emery, J. A. Ernst, R. Faccini, H. Farhat, J. E. Fast, M. Feindt, T. Ferber, F. Ferrarotto, F. Ferroni, R. C. Field, A. Filippi, G. Finocchiaro, E. Fioravanti, K. T. Flood, W. T. Ford, F. Forti, M. Franco Sevilla, M. Fritsch, J. R. Fry, B. G. Fulsom, E. Gabathuler, N. Gabyshev, D. Gamba, A. Garmash, J. W. Gary, I. Garzia, M. Gaspero, V. Gaur, A. Gaz, T. J. Gershon, D. Getzkow, R. Gillard, L. Li Gioi, M. A. Giorgi, R. Glattauer, R. Godang, Y. M. Goh, P. Goldenzweig, B. Golob, V. B. Golubev, R. Gorodeisky, W. Gradl, M. T. Graham, E. Grauges, K. Griessinger, A. V. Gritsan, G. Grosdidier, O. Gruenberg, N. Guttman, J. Haba, A. Hafner, B. Hamilton, T. Hara, P. F. Harrison, C. Hast, K. Hayasaka, H. Hayashii, C. Hearty, X. H. He, M. Hess, D. G. Hitlin, T. M. Hong, K. Honscheid, W-S. Hou, Y. B. Hsiung, Z. Huard, D. E. Hutchcroft, T. Iijima, G. Inguglia, W. R. Innes, A. Ishikawa, R. Itoh, Y. Iwasaki, J. M. Izen, I. Jaegle, A. Jawahery, C. P. Jessop, D. Joffe, K. K. Joo, T. Julius, K. H. Kang, R. Kass, T. Kawasaki, L. T. Kerth, A. Khan, C. Kiesling, D. Y. Kim, J. B. Kim, J. H. Kim, K. T. Kim, P. Kim, S. H. Kim, Y. J. Kim, G. J. King, K. Kinoshita, B. R. Ko, H. Koch, P. Kodys, Yu. G. Kolomensky, S. Korpar, D. Kovalskyi, R. Kowalewski, E. A. Kravchenko, P. Krizan, P. Krokovny, T. Kuhr, R. Kumar, A. Kuzmin, Y. -J. Kwon, H. M. Lacker, G. D. Lafferty, L. Lanceri, D. J. Lange, A. J. Lankford, T. E. Latham, T. Leddig, F. Le Diberder, D. H. Lee, I. S. Lee, M. J. Lee, J. P. Lees, D. W. G. S. Leith, Ph. Leruste, M. J. Lewczuk, P. Lewis, J. Libby, W. S. Lockman, O. Long, D. Lopes Pegna, J. M. LoSecco, X. C. Lou, T. Lueck, S. Luitz, P. Lukin, E. Luppi, A. Lusiani, V. Luth, A. M. Lutz, G. Lynch, D. B. MacFarlane, B. Malaescu, U. Mallik, E. Manoni, G. Marchiori, M. Margoni, S. Martellotti, F. Martinez-Vidal, M. Masuda, T. S. Mattison, D. Matvienko, J. A. McKenna, B. T. Meadows, K. Miyabayashi, T. S. Miyashita, H. Miyata, R. Mizuk, G. B. Mohanty, A. Moll, M. R. Monge, H. K. Moon, M. Morandin, D. R. Muller, R. Mussa, E. Nakano, H. Nakazawa, M. Nakao, T. Nanut, M. Nayak, H. Neal, N. Neri, N. K. Nisar, S. Nishida, I. M. Nugent, B. Oberhof, J. Ocariz, S. Ogawa, S. Okuno, E. O. Olaiya, J. Olsen, P. Ongmongkolkul, G. Onorato, A. P. Onuchin, Y. Onuki, W. Ostrowicz, A. Oyanguren, G. Pakhlova, P. Pakhlov, A. Palano, B. Pal, F. Palombo, Y. Pan, W. Panduro Vazquez, E. Paoloni, C. W. Park, H. Park, S. Passaggio, P. M. Patel, C. Patrignani, P. Patteri, D. J. Payne, T. K. Pedlar, D. R. Peimer, I. M. Peruzzi, L. Pesantez, R. Pestotnik, M. Petric, M. Piccolo, L. Piemontese, L. E. Piilonen, A. Pilloni, G. Piredda, S. Playfer, V. Poireau, F. C. Porter, M. Posocco, V. Prasad, S. Prell, R. Prepost, E. M. T. Puccio, T. Pulliam, M. V. Purohit, B. G. Pushpawela, M. Rama, A. Randle-Conde, B. N. Ratcliff, G. Raven, E. Ribezl, J. D. Richman, J. L. Ritchie, G. Rizzo, D. A. Roberts, S. H. Robertson, M. Roehrken, J. M. Roney, A. Roodman, A. Rossi, A. Rostomyan, M. Rotondo, P. Roudeau, R. Sacco, Y. Sakai, S. Sandilya, L. Santelj, V. Santoro, T. Sanuki, Y. Sato, V. Savinov, R. H. Schindler, O. Schneider, G. Schnell, T. Schroeder, K. R. Schubert, B. A. Schumm, C. Schwanda, A. J. Schwartz, R. F. Schwitters, C. Sciacca, A. Seiden, S. J. Sekula, K. Senyo, O. Seon, S. I. Serednyakov, M. E. Sevior, M. Shapkin, V. Shebalin, C. P. Shen, T-A. Shibata, J-G. Shiu, M. Simard, G. Simi, F. Simon, F. Simonetto, Yu. I. Skovpen, A. J. S. Smith, J. G. Smith, A. Snyder, R. Y. So, R. J. Sobie, A. Soffer, Y. -S. Sohn, M. D. Sokoloff, A. Sokolov, E. P. Solodov, E. Solovieva, B. Spaan, S. M. Spanier, M. Staric, A. Stocchi, R. Stroili, B. Stugu, D. Su, M. K. Sullivan, M. Sumihama, K. Sumisawa, T. Sumiyoshi, D. J. Summers, L. Sun, U. Tamponi, P. Taras, N. Tasneem, Y. Teramoto, V. Tisserand, K. Yu. Todyshev, W. H. Toki, C. Touramanis, K. Trabelsi, T. Tsuboyama, M. Uchida, T. Uglov, Y. Unno, S. Uno, Y. Usov, U. Uwer, S. E. Vahsen, C. Van Hulse, P. Vanhoefer, G. Varner, G. Vasseur, J. Va'vra, M. Verderi, A. Vinokurova, L. Vitale, V. Vorobyev, C. Voss, M. N. Wagner, S. R. Wagner, R. Waldi, J. J. Walsh, C. H. Wang, M-Z. Wang, P. Wang, Y. Watanabe, C. A. West, K. M. Williams, F. F. Wilson, J. R. Wilson, W. J. Wisniewski, E. Won, G. Wormser, D. M. Wright, S. L. Wu, H. W. Wulsin, H. Yamamoto, J. Yamaoka, S. Yashchenko, C. Z. Yuan, Y. Yusa, A. Zallo, C. C. Zhang, Z. P. Zhang, V. Zhilich, V. Zhulanov, A. Zupanc

    PHYSICAL REVIEW LETTERS   115 ( 12 )   121604-1 - 121604-10   2015年9月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We report a measurement of the time-dependent CP asymmetry of (B) over bar (0) -&gt; D(CP)((*))h(0) decays, where the light neutral hadron h(0) is a pi(0), eta , or omega meson, and the neutral D meson is reconstructed in the CP eigenstates K+K-, K-S(0)pi(0) or K-S(0)omega. The measurement is performed combining the final data samples collected at the Upsilon(4S) resonance by the BABAR and Belle experiments at the asymmetric-energy B factories PEP-II at SLAC and KEKB at KEK, respectively. The data samples contain (471 +/- 3) x 10(6) B (B) over bar pairs recorded by the BABAR detector and (772 +/- 11) x 10(6) B (B) over bar pairs recorded by the Belle detector. We measure the CP asymmetry parameters -eta S-f = +0.66 +/- 0.10(stat) +/- 0.06(syst) and C = -0.02 +/- 0.07(stat) +/- 0.03(syst). These results correspond to the first observation of CP violation in (B) over bar (0) -&gt; D(CP)((*))h(0) decays. The hypothesis of no mixing-induced CP violation is excluded in these decays at the level of 5.4 standard deviations.

    DOI: 10.1103/PhysRevLett.115.121604

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  • First Observation of the Hadronic Transition Upsilon(4S) -&gt; eta h(b)(1P) and New Measurement of the h(b)(1P) and eta(b)(1S) Parameters 査読

    U. Tamponi, R. Mussa, A. Abdesselam, H. Aihara, K. Arinstein, D. M. Asner, H. Atmacan, T. Aushev, R. Ayad, I. Badhrees, A. M. Bakich, E. Barberio, V. Bhardwaj, B. Bhuyan, J. Biswal, A. Bondar, G. Bonvicini, A. Bozek, M. Bracko, T. E. Browder, D. Cervenkov, A. Chen, B. G. Cheon, K. Cho, V. Chobanova, S. -K. Choi, Y. Choi, D. Cinabro, M. Danilov, Z. Dolezal, Z. Drasal, A. Drutskoy, S. Eidelman, D. Epifanov, H. Farhat, J. E. Fast, T. Ferber, B. G. Fulsom, V. Gaur, N. Gabyshev, A. Garmash, D. Getzkow, R. Gillard, Y. M. Goh, B. Golob, J. Haba, K. Hayasaka, H. Hayashii, X. H. He, M. T. Hedges, W-S. Hou, T. Iijima, K. Inami, A. Ishikawa, I. Jaegle, D. Joffe, T. Julius, E. Kato, P. Katrenko, H. Kichimi, C. Kiesling, D. Y. Kim, H. J. Kim, J. H. Kim, K. T. Kim, S. H. Kim, K. Kinoshita, P. Kodys, S. Korpar, P. Krizan, P. Krokovny, T. Kumita, A. Kuzmin, J. S. Lange, P. Lewis, J. Libby, P. Lukin, D. Matvienko, K. Miyabayashi, H. Miyata, R. Mizuk, G. B. Mohanty, A. Moll, T. Mori, E. Nakano, M. Nakao, T. Nanut, Z. Natkaniec, M. Nayak, N. K. Nisar, S. Nishida, S. Ogawa, S. Okuno, S. L. Olsen, W. Ostrowicz, C. Oswald, G. Pakhlova, B. Pal, H. Park, T. K. Pedlar, L. Pesantez, R. Pestotnik, M. Petric, L. E. Piilonen, E. Ribezl, M. Ritter, A. Rostomyan, S. Ryu, Y. Sakai, S. Sandilya, L. Santelj, T. Sanuki, Y. Sato, V. Savinov, O. Schneider, G. Schnell, C. Schwanda, D. Semmler, K. Senyo, M. E. Sevior, M. Shapkin, V. Shebalin, C. P. Shen, T-A. Shibata, J-G. Shiu, B. Shwartz, A. Sibidanov, F. Simon, Y-S. Sohn, A. Sokolov, M. Staric, M. Steder, J. Stypula, K. Tanida, Y. Teramoto, K. Trabelsi, M. Uchida, T. Uglov, Y. Unno, S. Uno, P. Urquijo, C. Van Hulse, P. Vanhoefer, G. Varner, A. Vinokurova, A. Vossen, M. N. Wagner, M-Z. Wang, X. L. Wang, Y. Watanabe, K. M. Williams, E. Won, J. Yamaoka, S. Yashchenko, Z. P. Zhang, V. Zhilich, V. Zhulanov, A. Zupanc

    PHYSICAL REVIEW LETTERS   115 ( 14 )   142001-1 - 142001-7   2015年9月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    Using a sample of 771.6 x 10(6) Upsilon Upsilon(4S) decays collected by the Belle experiment at the KEKB e(+)e(-) collider, we observe, for the first time, the transition Upsilon(4S) -&gt; eta h(b)(1P) with the branching fraction B[Upsilon(4S) -&gt; eta h(b)(1P)] = (2.18 +/- 0.11 +/- 0.18) x 10(-3) and we measure the h(b)(1P) mass M-hb(1P) = (9899.3 +/- 0.4 +/- 1.0) MeV/c(2), corresponding to the hyperfine (HF) splitting Delta M-HF(1P) = (0.6 +/- 0.4 +/- 1.0) MeV/c(2). Using the transition h(b)(1P) -&gt; gamma eta(b)(1S), we measure the eta(b)(1S) mass M-eta b(1S) = (9400.7 +/- 1.7 +/- 1.6) MeV/c(2), corresponding to Delta M-HF(1S) = (59.6 +/- 1.7 +/- 1.6) MeV/c(2), the eta(b)(1S) width Gamma(eta b)(1S) = (8(-5)(+6)+/- 5) MeV/c(2) and the branching fraction B[h(b)(1P) -&gt; gamma eta(b)(1S)] = (56 +/- 8 +/- 4)%.

    DOI: 10.1103/PhysRevLett.115.142001

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  • Erratum: Publisher's Note: Measurements of B → D ¯ Ds0∗+ (2317) decay rates and a search for isospin partners of the Ds0∗+ (2317) (Physical Review D - Particles, Fields, Gravitation and Cosmology (2015) 91 (092011)) 査読

    S. K. Choi, S. L. Olsen, A. Abdesselam, I. Adachi, H. Aihara, K. Arinstein, D. M. Asner, T. Aushev, R. Ayad, V. Babu, I. Badhrees, A. M. Bakich, E. Barberio, V. Bhardwaj, B. Bhuyan, G. Bonvicini, A. Bozek, M. Bračko, T. E. Browder, D. Červenkov, A. Chen, B. G. Cheon, K. Chilikin, R. Chistov, K. Cho, V. Chobanova, Y. Choi, D. Cinabro, J. Dalseno, M. Danilov, Z. Doležal, Z. Drásal, A. Drutskoy, D. Dutta, S. Eidelman, H. Farhat, J. E. Fast, T. Ferber, B. G. Fulsom, V. Gaur, N. Gabyshev, A. Garmash, D. Getzkow, R. Gillard, R. Glattauer, Y. M. Goh, B. Golob, J. Haba, T. Hara, K. Hayasaka, H. Hayashii, X. H. He, T. Horiguchi, W. S. Hou, T. Iijima, K. Inami, G. Inguglia, A. Ishikawa, R. Itoh, Y. Iwasaki, I. Jaegle, D. Joffe, T. Julius, K. H. Kang, E. Kato, P. Katrenko, T. Kawasaki, B. H. Kim, D. Y. Kim, H. J. Kim, J. B. Kim, J. H. Kim, K. T. Kim, S. H. Kim, Y. J. Kim, K. Kinoshita, B. R. Ko, P. Kodyš, S. Korpar, P. KriŽan, P. Krokovny, T. Kumita, A. Kuzmin, Y. J. Kwon, J. S. Lange, I. S. Lee, P. Lewis, H. Li, L. Li Gioi, J. Libby, P. Lukin, D. Matvienko, K. Miyabayashi, H. Miyata, R. Mizuk, G. B. Mohanty, A. Moll, H. K. Moon, T. Mori, R. Mussa

    Physical Review D - Particles, Fields, Gravitation and Cosmology   92 ( 3 )   2015年8月

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    掲載種別:研究論文(学術雑誌)  

    DOI: 10.1103/PhysRevD.92.039905

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  • Measurements of B -&gt; (D)over-barD(s0)*(+) (2317) decay rates and a search for isospin partners of the D-s0*(+) (2317) (vol 91, 092011, 2015) 査読

    S-K. Choi, S. L. Olsen, A. Abdesselam, I. Adachi, H. Aihara, K. Arinstein, D. M. Asner, T. Aushev, R. Ayad, V. Babu, I. Badhrees, A. M. Bakich, E. Barberio, V. Bhardwaj, B. Bhuyan, G. Bonvicini, A. Bozek, M. Bracko, T. E. Browder, D. Cervenkov, A. Chen, B. G. Cheon, K. Chilikin, R. Chistov, K. Cho, V. Chobanova, Y. Choi, D. Cinabro, J. Dalseno, M. Danilov, Z. Dolezal, Z. Drasal, A. Drutskoy, D. Dutta, S. Eidelman, H. Farhat, J. E. Fast, T. Ferber, B. G. Fulsom, V. Gaur, N. Gabyshev, A. Garmash, D. Getzkow, R. Gillard, R. Glattauer, Y. M. Goh, B. Golob, J. Haba, T. Hara, K. Hayasaka, H. Hayashii, X. H. He, T. Horiguchi, W-S. Hou, T. Iijima, K. Inami, G. Inguglia, A. Ishikawa, R. Itoh, Y. Iwasaki, I. Jaegle, D. Joffe, T. Julius, K. H. Kang, E. Kato, P. Katrenko, T. Kawasaki, B. H. Kim, D. Y. Kim, H. J. Kim, J. B. Kim, J. H. Kim, K. T. Kim, S. H. Kim, Y. J. Kim, K. Kinoshita, B. R. Ko, P. Kodys, S. Korpar, P. Krizan, P. Krokovny, T. Kumita, A. Kuzmin, Y-J. Kwon, J. S. Lange, I. S. Lee, P. Lewis, H. Li, L. Li Gioi, J. Libby, P. Lukin, D. Matvienko, K. Miyabayashi, H. Miyata, R. Mizuk, G. B. Mohanty, A. Moll, H. K. Moon, T. Mori, R. Mussa, E. Nakano, M. Nakao, T. Nanut, Z. Natkaniec, M. Nayak, N. K. Nisar, S. Nishida, S. Ogawa, S. Okuno, P. Pakhlov, G. Pakhlova, B. Pal, C. W. Park, H. Park, T. K. Pedlar, L. Pesantez, R. Pestotnik, M. Petric, L. E. Piilonen, E. Ribezl, M. Ritter, A. Rostomyan, S. Ryu, Y. Sakai, S. Sandilya, L. Santelj, T. Sanuki, Y. Sato, V. Savinov, O. Schneider, G. Schnell, C. Schwanda, K. Senyo, M. E. Sevior, M. Shapkin, V. Shebalin, C. P. Shen, T-A. Shibata, J-G. Shiu, B. Shwartz, A. Sibidanov, F. Simon, Y-S. Sohn, A. Sokolov, E. Solovieva, M. Staric, M. Steder, U. Tamponi, S. Tanaka, K. Tanida, Y. Teramoto, V. Trusov, M. Uchida, T. Uglov, Y. Unno, S. Uno, P. Urquijo, Y. Usov, C. Van Hulse, P. Vanhoefer, G. Varner, A. Vinokurova, V. Vorobyev, A. Vossen, M. N. Wagner, C. H. Wang, M-Z. Wang, X. L. Wang, Y. Watanabe, K. M. Williams, E. Won, S. Yashchenko, Z. P. Zhang, V. Zhilich, V. Zhulanov, A. Zupanc

    PHYSICAL REVIEW D   92 ( 3 )   039905-1 - 039905-1   2015年8月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    DOI: 10.1103/PhysRevD.92.039905

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  • Measurement of e(+)e(-) -&gt; gamma chi(cJ) via initial state radiation at Belle 査読

    Y. L. Han, X. L. Wang, C. Z. Yuan, C. P. Shen, P. Wang, A. Abdesselam, I. Adachi, H. Aihara, S. Al Said, D. M. Asner, T. Aushev, V. Babu, I. Badhrees, V. Bansal, V. Bhardwaj, J. Biswal, A. Bozek, M. Bracko, A. Chen, B. G. Cheon, R. Chistov, K. Cho, V. Chobanova, S. -K. Choi, D. Cinabro, J. Dalseno, M. Danilov, Z. Dolezal, A. Drutskoy, D. Dutta, S. Eidelman, H. Farhat, J. E. Fast, T. Ferber, B. G. Fulsom, V. Gaur, N. Gabyshev, A. Garmash, D. Getzkow, R. Gillard, R. Glattauer, Y. M. Goh, P. Goldenzweig, B. Golob, J. Haba, K. Hayasaka, H. Hayashii, X. H. He, T. Horiguchi, W. -S. Hou, T. Iijima, A. Ishikawa, I. Jaegle, D. Joffe, K. K. Joo, H. Kichimi, D. Y. Kim, J. B. Kim, J. H. Kim, K. T. Kim, S. H. Kim, Y. J. Kim, K. Kinoshita, B. R. Ko, P. Kodys, P. Krizan, P. Krokovny, P. Lewis, L. Li Gioi, J. Libby, D. Liventsev, P. Lukin, M. Masuda, D. Matvienko, K. Miyabayashi, H. Miyata, R. Mizuk, A. Moll, H. K. Moon, R. Mussa, E. Nakano, M. Nakao, M. Nayak, N. K. Nisar, S. Nishida, S. Ogawa, S. Okuno, W. Ostrowicz, P. Pakhlov, G. Pakhlova, B. Pal, H. Park, T. K. Pedlar, R. Pestotnik, M. Petric, L. E. Piilonen, C. Pulvermacher, E. Ribezl, M. Ritter, A. Rostomyan, H. Sahoo, Y. Sakai, S. Sandilya, L. Santelj, T. Sanuki, O. Schneider, G. Schnell, C. Schwanda, K. Senyo, M. E. Sevior, M. Shapkin, V. Shebalin, T. -A. Shibata, J. -G. Shiu, B. Shwartz, F. Simon, Y. -S. Sohn, A. Sokolov, E. Solovieva, S. Stanic, M. Steder, M. Sumihama, U. Tamponi, Y. Teramoto, M. Uchida, S. Uehara, T. Uglov, Y. Unno, S. Uno, Y. Usov, C. Van Hulse, P. Vanhoefer, G. Varner, A. Vossen, M. N. Wagner, Y. Watanabe, K. M. Williams, S. Yashchenko, Y. Yook, C. C. Zhang, Z. P. Zhang, V. Zhilich, V. Zhulanov, A. Zupanc

    PHYSICAL REVIEW D   92 ( 1 )   012011-1 - 012011-9   2015年7月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    The process e(+)e(-) -&gt; gamma chi(cJ) (J = 1, 2) is studied via initial state radiation using 980 fb(-1) of data at and around the Gamma(nS) (n = 1, 2, 3, 4, 5) resonances collected with the Belle detector at the KEKB asymmetricenergy e(+)e(-) collider. No significant signal is observed except from psi(2S) decays. Upper limits on the cross sections between root s = 3.80 and 5.56 GeV are determined at the 90% credibility level, which range from a few pb to a few tens of pb. We also set upper limits on the decay rate of the vector charmonium [psi(4040), psi(4160), and psi(4415)] and charmoniumlike [Y(4260), Y(4360), and Y(4660)] states to gamma chi(cJ).

    DOI: 10.1103/PhysRevD.92.012011

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  • Evidence for the decay B-0 -&gt; eta pi(0) 査読

    B. Pal, A. J. Schwartz, A. Abdesselam, I. Adachi, H. Aihara, S. Al Said, K. Arinstein, D. M. Asner, V. Aulchenko, T. Aushev, R. Ayad, V. Babu, I. Badhrees, A. M. Bakich, A. Bobrov, G. Bonvicini, A. Bozek, M. Bracko, T. E. Browder, D. Cervenkov, M. -C. Chang, V. Chekelian, A. Chen, B. G. Cheon, K. Cho, V. Chobanova, Y. Choi, D. Cinabro, J. Dalseno, Z. Dolezal, Z. Drasal, A. Drutskoy, D. Dutta, S. Eidelman, H. Farhat, J. E. Fast, T. Ferber, O. Frost, B. G. Fulsom, V. Gaur, N. Gabyshev, S. Ganguly, A. Garmash, D. Getzkow, R. Gillard, R. Glattauer, Y. M. Goh, B. Golob, O. Grzymkowska, T. Hara, K. Hayasaka, H. Hayashii, X. H. He, W. -S. Hou, M. Huschle, H. J. Hyun, T. Iijima, A. Ishikawa, R. Itoh, Y. Iwasaki, I. Jaegle, T. Julius, K. H. Kang, E. Kato, C. Kiesling, D. Y. Kim, J. B. Kim, J. H. Kim, K. T. Kim, M. J. Kim, S. H. Kim, Y. J. Kim, K. Kinoshita, B. R. Ko, P. Kodys, S. Korpar, P. Krizan, P. Krokovny, T. Kuhr, T. Kumita, A. Kuzmin, Y. -J. Kwon, J. S. Lange, D. H. Lee, I. S. Lee, Y. Li, L. Li Gioi, J. Libby, D. Liventsev, P. Lukin, D. Matvienko, H. Miyata, G. B. Mohanty, A. Moll, H. K. Moon, K. R. Nakamura, E. Nakano, M. Nakao, T. Nanut, Z. Natkaniec, M. Nayak, S. Nishida, S. Ogawa, S. Okuno, P. Pakhlov, G. Pakhlova, C. W. Park, H. Park, T. K. Pedlar, L. Pesantez, M. Petric, L. E. Piilonen, C. Pulvermacher, E. Ribezl, M. Ritter, A. Rostomyan, S. Ryu, Y. Sakai, S. Sandilya, D. Santel, L. Santelj, T. Sanuki, Y. Sato, O. Schneider, G. Schnell, C. Schwanda, K. Senyo, O. Seon, M. E. Sevior, M. Shapkin, V. Shebalin, C. P. Shen, T. -A. Shibata, J. -G. Shiu, A. Sibidanov, F. Simon, Y. -S. Sohn, E. Solovieva, S. Stanic, M. Staric, M. Sumihama, K. Sumisawa, T. Sumiyoshi, U. Tamponi, Y. Teramoto, F. Thorne, M. Uchida, S. Uehara, Y. Unno, S. Uno, Y. Usov, C. Van Hulse, P. Vanhoefer, G. Varner, A. Vinokurova, V. Vorobyev, A. Vossen, M. N. Wagner, C. H. Wang, M. -Z. Wang, P. Wang, X. L. Wang, Y. Watanabe, E. Won, H. Yamamoto, J. Yamaoka, S. Yashchenko, Z. P. Zhang, V. Zhilich, V. Zhulanov, A. Zupanc

    PHYSICAL REVIEW D   92 ( 1 )   011101-1 - 011101-7   2015年7月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We report a search for the charmless hadronic decay B-0 -&gt; eta pi(0) with a data sample corresponding to an integrated luminosity of 694 fb(-1) containing 753 x 10(6) BB pairs. The data were collected by the Belle experiment running on the Upsilon(4S) resonance at the KEKB e(+)e(-) collider. We measure a branching fraction B(B-0 &gt; eta pi(0)) = (4.1(-1.5-0.7)(+1.75+0.5)) x 10(-7), where the first unceminty is statistical and the second is systematic. Our measurement gives an upper limit of beta(B-0 -&gt; n pi(0)) &lt; 6.5 x 10(-7) at 90% confidence level. The signal has a significance of 3.0 standard deviations and constitutes the first evidence for this decay mode.

    DOI: 10.1103/PhysRevD.92.011101

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  • Study of D** production and light hadronic states in the (B)over-bar(0) -&gt; D*(+)omega pi(-) decay 査読

    D. Matvienko, A. Kuzmin, S. Eidelman, A. Abdesselam, I. Adachi, H. Aihara, S. Al Said, K. Arinstein, D. M. Asner, V. Aulchenko, T. Aushev, R. Ayad, V. Babu, I. Badhrees, S. Bahinipati, A. M. Bakich, V. Bansal, V. Bhardwaj, B. Bhuyan, J. Biswal, A. Bobrov, A. Bondar, G. Bonvicini, A. Bozek, M. Bracko, T. E. Browder, D. Cervenkov, A. Chen, B. G. Cheon, K. Chilikin, R. Chistov, K. Cho, V. Chobanova, S. -K. Choi, Y. Choi, D. Cinabro, J. Dalseno, J. Dingfelder, Z. Dolezal, Z. Drasal, A. Drutskoy, D. Dutta, D. Epifanov, H. Farhat, J. E. Fast, T. Ferber, B. G. Fulsom, V. Gaur, N. Gabyshev, A. Garmash, D. Getzkow, R. Gillard, Y. M. Goh, P. Goldenzweig, B. Golob, T. Hara, K. Hayasaka, H. Hayashii, X. H. He, W. -S. Hou, T. Iijima, G. Inguglia, A. Ishikawa, R. Itoh, Y. Iwasaki, I. Jaegle, D. Joffe, K. K. Joo, T. Julius, T. Kawasaki, D. Y. Kim, J. B. Kim, J. H. Kim, K. T. Kim, M. J. Kim, S. H. Kim, Y. J. Kim, B. R. Ko, P. Kodys, S. Korpar, P. Krokovny, R. Kumar, J. S. Lange, D. H. Lee, L. Li Gioi, J. Libby, D. Liventsev, K. Miyabayashi, H. Miyata, R. Mizuk, G. B. Mohanty, A. Moll, R. Mussa, E. Nakano, M. Nakao, T. Nanut, M. Nayak, N. K. Nisar, S. Nishida, S. Ogawa, G. Pakhlova, B. Pal, C. W. Park, H. Park, T. K. Pedlar, L. Pesantez, R. Pestotnik, M. Petric, L. E. Piilonen, C. Pulvermacher, E. Ribezl, M. Ritter, A. Rostomyan, Y. Sakai, S. Sandilya, L. Santelj, T. Sanuki, O. Schneider, G. Schnell, C. Schwanda, K. Senyo, O. Seon, M. E. Sevior, M. Shapkin, V. Shebalin, C. P. Shen, T. -A. Shibata, J. -G. Shiu, B. Shwartz, A. Sibidanov, F. Simon, Y. -S. Sohn, A. Sokolov, M. Staric, M. Steder, M. Sumihama, K. Sumisawa, U. Tamponi, K. Tanida, Y. Teramoto, M. Uchida, S. Uehara, Y. Unno, S. Uno, P. Urquijo, Y. Usov, C. Van Hulse, P. Vanhoefer, G. Varner, A. Vinokurova, V. Vorobyev, M. N. Wagner, C. H. Wang, M. -Z. Wang, P. Wang, Y. Watanabe, K. M. Williams, E. Won, H. Yamamoto, S. Yashchenko, Y. Yook, Z. P. Zhang, V. Zhilich, V. Zhulanov, A. Zupanc

    PHYSICAL REVIEW D   92 ( 1 )   012013-1 - 012013-28   2015年7月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We report on the first observations of (B) over bar (0) -&gt; D-1 (2430)(0)omega, (B) over bar (0) -&gt; D-1 (2420)(0)omega, and (B) over bar (0) -&gt; D-2* (2460)(0)omega decays. The (B) over bar (0) -&gt; D*(+) rho(1450)(-) decay is also observed. The branching fraction measurements are based on (771.6 +/- 10.6) x 10(6) B (B) over bar events collected at the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. The fractions of longitudinal polarization of the D** states as well as partial wave fractions of the D-1 (2430)(0) are obtained. We also set a 90% confidence level upper limit for the product of branching fractions of B((B) over bar (0) -&gt; D*(+)b(1) (1235)(-)) x B(b(1) (1235)(-) -&gt; omega pi(-)). The measurements show evidence of nontrivial final-state interaction phases for the rho-meson-like amplitudes.

    DOI: 10.1103/PhysRevD.92.012013

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  • Search for B decays to final states with the η<inf>c</inf> meson 査読

    A. Vinokurova, A. Kuzmin, S. Eidelman, A. Abdesselam, I. Adachi, H. Aihara, K. Arinstein, D. M. Asner, T. Aushev, R. Ayad, A. M. Bakich, V. Bansal, V. Bhardwaj, B. Bhuyan, A. Bobrov, A. Bondar, A. Bozek, M. Bračko, T. E. Browder, V. Chekelian, B. G. Cheon, K. Chilikin, R. Chistov, K. Cho, S. K. Choi, Y. Choi, D. Cinabro, J. Dingfelder, Z. Doležal, Z. Drásal, A. Drutskoy, D. Dutta, D. Epifanov, H. Farhat, J. E. Fast, T. Ferber, V. Gaur, N. Gabyshev, A. Garmash, R. Gillard, Y. M. Goh, B. Golob, J. Haba, K. Hayasaka, H. Hayashii, X. H. He, W. S. Hou, K. Inami, A. Ishikawa, R. Itoh, Y. Iwasaki, D. Joffe, T. Julius, K. H. Kang, E. Kato, C. Kiesling, D. Y. Kim, H. J. Kim, J. H. Kim, K. T. Kim, M. J. Kim, S. H. Kim, Y. J. Kim, K. Kinoshita, B. R. Ko, P. Kodyš, S. Korpar, P. Križan, P. Krokovny, T. Kuhr, T. Kumita, Y. J. Kwon, J. S. Lange, L. Li Gioi, J. Libby, D. Liventsev, P. Lukin, D. Matvienko, K. Miyabayashi, H. Miyake, H. Miyata, G. B. Mohanty, A. Moll, T. Mori, R. Mussa, E. Nakano, M. Nakao, Z. Natkaniec, C. Ng, N. K. Nisar, S. Nishida, S. Ogawa, S. Okuno, S. L. Olsen, P. Pakhlov, G. Pakhlova, C. W. Park, H. Park, T. K. Pedlar

    Journal of High Energy Physics   2015 ( 6 )   2015年6月

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    掲載種別:研究論文(学術雑誌)  

    © 2015, The Author(s). Abstract: We report a search for B decays to selected final states with the ηc meson: B± → K±ηcπ+π−, B± → K±ηcω, B± → K±ηcη and B± → K±ηcπ0. The analysis is based on 772 × 106BB¯$$ B\overline{B} $$ pairs collected at the Υ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e− collider. We set 90% confidence level upper limits on the branching fractions of the studied B decay modes, independent of intermediate resonances, in the range (0.6–5.3) × 10−4. We also search for molecular-state candidates in the (Formula presented.) and (Formula presented.) combinations, neutral partners of the Z(3900)± and Z(4020)±, and a poorly understood state X(3915) as possible intermediate states in the decay chain, and set 90% confidence level upper limits on the product of branching fractions to the mentioned intermediate states and decay branching fractions of these states in the range (0.6–6.9) × 10−5.

    DOI: 10.1007/JHEP06(2015)132

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  • Measurement of e+e- →γχcJ via initial state radiation at Belle 査読

    Y. L. Han, X. L. Wang, C. Z. Yuan, C. P. Shen, P. Wang, A. Abdesselam, I. Adachi, I. Adachi, H. Aihara, S. Al Said, S. Al Said, D. M. Asner, T. Aushev, T. Aushev, V. Babu, I. Badhrees, I. Badhrees, V. Bansal, V. Bhardwaj, J. Biswal, A. Bozek, M. Bračko, M. Bračko, A. Chen, B. G. Cheon, R. Chistov, K. Cho, V. Chobanova, S. K. Choi, D. Cinabro, J. Dalseno, J. Dalseno, M. Danilov, M. Danilov, Z. DoleŽal, A. Drutskoy, A. Drutskoy, D. Dutta, S. Eidelman, S. Eidelman, H. Farhat, J. E. Fast, T. Ferber, B. G. Fulsom, V. Gaur, N. Gabyshev, N. Gabyshev, A. Garmash, A. Garmash, D. Getzkow, R. Gillard, R. Glattauer, Y. M. Goh, P. Goldenzweig, B. Golob, B. Golob, J. Haba, J. Haba, K. Hayasaka, H. Hayashii, X. H. He, T. Horiguchi, W. S. Hou, T. Iijima, T. Iijima, A. Ishikawa, I. Jaegle, D. Joffe, K. K. Joo, H. Kichimi, D. Y. Kim, J. B. Kim, J. H. Kim, K. T. Kim, S. H. Kim, Y. J. Kim, K. Kinoshita, B. R. Ko, P. Kodyš, P. KriŽan, P. KriŽan, P. Krokovny, P. Krokovny, P. Lewis, L. Li Gioi, J. Libby, D. Liventsev, D. Liventsev, P. Lukin, P. Lukin, M. Masuda, D. Matvienko, D. Matvienko, K. Miyabayashi, H. Miyata, R. Mizuk, R. Mizuk, A. Moll, A. Moll, H. K. Moon

    Physical Review D - Particles, Fields, Gravitation and Cosmology   92 ( 1 )   2015年6月

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    掲載種別:研究論文(学術雑誌)  

    © 2015 American Physical Society. The process e+e-→γχcJ (J=1, 2) is studied via initial state radiation using 980fb-1 of data at and around the (nS) (n=1, 2, 3, 4, 5) resonances collected with the Belle detector at the KEKB asymmetric-energy e+e- collider. No significant signal is observed except from ψ(2S) decays. Upper limits on the cross sections between s=3.80 and 5.56 GeV are determined at the 90% credibility level, which range from a few pb to a few tens of pb. We also set upper limits on the decay rate of the vector charmonium [ψ(4040), ψ(4160), and ψ(4415)] and charmoniumlike [Y(4260), Y(4360), and Y(4660)] states to γχcJ.

    DOI: 10.1103/PhysRevD.92.012011

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  • Measurement of e(+)e(-) -&gt; pi(+)pi(-)psi(2S) via initial state radiation at Belle 査読

    X. L. Wang, C. Z. Yuan, C. P. Shen, P. Wang, A. Abdesselam, I. Adachi, H. Aihara, S. Al Said, K. Arinstein, D. M. Asner, R. Ayad, A. M. Bakich, V. Bansal, B. Bhuyan, A. Bobrov, G. Bonvicini, M. Bracko, T. E. Browder, D. Cervenkov, P. Chang, V. Chekelian, A. Chen, B. G. Cheon, K. Chilikin, R. Chistov, K. Cho, V. Chobanova, S. -K. Choi, Y. Choi, D. Cinabro, J. Dalseno, M. Danilov, Z. Dolezal, Z. Drasal, A. Drutskoy, K. Dutta, S. Eidelman, H. Farhat, J. E. Fast, T. Ferber, V. Gaur, A. Garmash, D. Getzkow, R. Gillard, Y. M. Goh, J. Haba, K. Hayasaka, H. Hayashii, X. H. He, W. -S. Hou, T. Iijima, K. Inami, A. Ishikawa, R. Itoh, Y. Iwasaki, D. Joffe, T. Julius, K. H. Kang, E. Kato, T. Kawasaki, C. Kiesling, D. Y. Kim, H. J. Kim, J. B. Kim, J. H. Kim, M. J. Kim, S. H. Kim, Y. J. Kim, K. Kinoshita, B. R. Ko, P. Kodys, S. Korpar, P. Krizan, P. Krokovny, A. Kuzmin, Y. -J. Kwon, J. S. Lange, I. S. Lee, P. Lewis, Y. Li, L. Li Gioi, J. Libby, D. Liventsev, P. Lukin, D. Matvienko, K. Miyabayashi, H. Miyata, R. Mizuk, A. Moll, T. Mori, R. Mussa, E. Nakano, M. Nakao, T. Nanut, Z. Natkaniec, N. K. Nisar, S. Nishida, S. Ogawa, S. Okuno, S. L. Olsen, P. Pakhlov, G. Pakhlova, C. W. Park, H. Park, T. K. Pedlar, R. Pestotnik, M. Petric, L. E. Piilonen, E. Ribezl, M. Ritter, A. Rostomyan, S. Ryu, Y. Sakai, S. Sandilya, L. Santelj, T. Sanuki, V. Savinov, O. Schneider, G. Schnell, C. Schwanda, D. Semmler, K. Senyo, V. Shebalin, T. -A. Shibata, J. -G. Shiu, A. Sibidanov, F. Simon, Y. -S. Sohn, A. Sokolov, E. Solovieva, M. Staric, M. Steder, T. Sumiyoshi, U. Tamponi, K. Tanida, G. Tatishvili, Y. Teramoto, K. Trabelsi, M. Uchida, T. Uglov, Y. Unno, S. Uno, Y. Usov, C. Van Hulse, P. Vanhoefer, G. Varner, A. Vinokurova, M. N. Wagner, Y. Watanabe, E. Won, S. Yashchenko, Y. Yusa, Z. P. Zhang, V. Zhilich, A. Zupanc

    PHYSICAL REVIEW D   91 ( 11 )   112007-1 - 112007-15   2015年6月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We report measurement of the cross section of e(+)e(-) -&gt; pi(+)pi(-)psi(2S) between 4.0 and 5.5 GeV, based on an analysis of initial state radiation events in a 980 fb(-1) data sample recorded with the Belle detector. The properties of the Y(4360) and Y(4660) states are determined. Fitting the mass spectrum of pi(+)pi(-)psi(2S) with two coherent Breit-Wigner functions, we find two solutions with identical mass and width but different couplings to electron-positron pairs: M-Y(4360) = (4347 +/- 6 +/- 3) MeV/c(2), Gamma(Y(4360)) = (103 +/- 9 +/- 5) MeV, M-Y(4660) = (4652 +/- 10 +/- 8) MeV/c(2), Gamma(Y(4660)) = (68 +/- 11 +/- 1) MeV; and B[Y(4360) -&gt; pi(+)pi(-)psi(2S)] . Gamma(e+e-)(Y(4360)) = (10.9 +/- 0.6 +/- 0.7) eV and B[Y(4660) -&gt; pi(+)pi(-)psi(2S)] . Gamma(e+e-)(Y(4660)) = (8.1 +/- 1.1 +/- 0.5) eV for one solution; or B[Y(4360) -&gt; pi(+)pi(-)psi(2S)] . Gamma(e+e-)(Y(4360)) = (9.2 +/- 0.6 +/- 0.6) eV and B[Y(4660) -&gt; pi(+)pi(-)psi(2S)] . Gamma(e+e-)(Y(4660)) = (2.0 +/- 0.3 +/- 0.2) eV for the other. Here, the first errors are statistical and the second systematic. Evidence for a charged charmoniumlike structure at 4.05 GeV/c(2) is observed in the pi(+/-)psi(2S) intermediate state in the Y(4360) decays.

    DOI: 10.1103/PhysRevD.91.112007

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  • Search for B+ -&gt; l(+)nu(l)gamma decays with hadronic tagging using the full Belle data sample 査読

    A. Heller, P. Goldenzweig, M. Heck, T. Kuhr, A. Zupanc, A. Abdesselam, I. Adachi, K. Adamczyk, H. Aihara, K. Arinstein, D. M. Asner, V. Aulchenko, T. Aushev, R. Ayad, V. Babu, I. Badhrees, A. M. Bakich, E. Barberio, V. Bhardwaj, B. Bhuyan, J. Biswal, A. Bondar, G. Bonvicini, A. Bozek, M. Bracko, T. E. Browder, D. Cervenkov, A. Chen, B. G. Cheon, K. Cho, V. Chobanova, Y. Choi, D. Cinabro, M. Danilov, Z. Dolezal, Z. Drasal, A. Drutskoy, D. Dutta, S. Eidelman, H. Farhat, J. E. Fast, M. Feindt, T. Ferber, B. G. Fulsom, V. Gaur, N. Gabyshev, A. Garmash, D. Getzkow, R. Gillard, R. Glattauer, Y. M. Goh, B. Golob, J. Grygier, J. Haba, K. Hayasaka, X. H. He, M. Heider, T. Horiguchi, W. -S. Hou, M. Huschle, T. Iijima, K. Inami, A. Ishikawa, R. Itoh, Y. Iwasaki, I. Jaegle, D. Joffe, E. Kato, P. Katrenko, T. Kawasaki, D. Y. Kim, H. J. Kim, J. B. Kim, J. H. Kim, K. T. Kim, S. H. Kim, K. Kinoshita, B. R. Ko, P. Kodys, S. Korpar, P. Krizan, P. Krokovny, T. Kumita, A. Kuzmin, Y. -J. Kwon, J. S. Lange, I. S. Lee, P. Lewis, J. Libby, P. Lukin, D. Matvienko, K. Miyabayashi, H. Miyata, R. Mizuk, G. B. Mohanty, A. Moll, H. K. Moon, R. Mussa, E. Nakano, M. Nakao, T. Nanut, Z. Natkaniec, M. Nayak, N. K. Nisar, S. Nishida, S. Ogawa, S. Okuno, S. L. Olsen, C. Oswald, G. Pakhlova, B. Pal, H. Park, T. K. Pedlar, L. Pesantez, R. Pestotnik, M. Petric, L. E. Piilonen, C. Pulvermacher, E. Ribezl, M. Ritter, A. Rostomyan, S. Ryu, Y. Sakai, S. Sandilya, L. Santelj, T. Sanuki, Y. Sato, V. Savinov, O. Schneider, G. Schnell, C. Schwanda, K. Senyo, M. E. Sevior, M. Shapkin, V. Shebalin, C. P. Shen, T. -A. Shibata, J. -G. Shiu, B. Shwartz, A. Sibidanov, F. Simon, Y. -S. Sohn, A. Sokolov, M. Staric, M. Steder, J. Stypula, U. Tamponi, Y. Teramoto, K. Trabelsi, M. Uchida, T. Uglov, Y. Unno, S. Uno, P. Urquijo, C. Van Hulse, P. Vanhoefer, G. Varner, A. Vinokurova, A. Vossen, M. N. Wagner, M. -Z. Wang, X. L. Wang, Y. Watanabe, K. M. Williams, E. Won, Y. Yamashita, S. Yashchenko, Z. P. Zhang, V. Zhilich

    PHYSICAL REVIEW D   91 ( 11 )   112009-1 - 112009-11   2015年6月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We search for the decay B+ -&gt; l(+)nu(l)gamma with l(+) = e(+) or mu(+) using the full Belle data set of 772 x 10(6) B (B) over bar pairs, collected at the Y(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. We reconstruct one B meson in a hadronic decay mode and search for the B+ -&gt; l(+)nu(l)gamma decay in the remainder of the event. We observe no significant signal within the phase space of E-gamma(sig) &gt; 1 GeV and obtain upper limits of B(B+ -&gt; e(+)nu(e)gamma) &lt; 6.1 x 10(-6), B(B+ -&gt; mu(+)nu(mu)gamma) &lt; 3.4 x 10(-6), and B(B+ -&gt; l(+)nu(l)gamma) &lt; 3.5 x 10(-6) at 90% credibility level.

    DOI: 10.1103/PhysRevD.91.112009

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  • Search for B decays to final states with the η<inf>c</inf> meson 査読

    Vinokurova A, Kuzmin A, Eidelman S, Abdesselam A, Adachi I, Aihara H, Arinstein K, Asner D.M, Aushev T, Ayad R, Bakich A.M, Bansal V, Bhardwaj V, Bhuyan B, Bobrov A, Bondar A, Bozek A, Bra?ko M, Browder T.E, Chekelian V, Cheon B.G, Chilikin K, Chistov R, Cho K, Choi S.-K, Choi Y, Cinabro D, Dingfelder J, Dole?al Z, Dr{\'a}sal Z, Drutskoy A, Dutta D, Epifanov D, Farhat H, Fast J.E, Ferber T, Gaur V, Gabyshev N, Garmash A, Gillard R, Goh Y.M, Golob B, Haba J, Hayasaka K, Hayashii H, He X.H, Hou W.-S, Inami K, Ishikawa A, Itoh R, Iwasaki Y, Joffe D, Julius T, Kang K.H, Kato E, Kiesling C, Kim D.Y, Kim H.J, Kim J.H, Kim K.T, Kim M.J, Kim S.H, Kim Y.J, Kinoshita K, Ko B.R, Kody? P, Korpar S, Kri?an P, Krokovny P, Kuhr T, Kumita T, Kwon Y.-J, Lange J.S, Gioi L.L, Libby J, Liventsev D, Lukin P, Matvienko D, Miyabayashi K, Miyake H, Miyata H, Mohanty G.B, Moll A, Mori T, Mussa R, Nakano E, Nakao M, Natkaniec Z, Ng C, Nisar N.K, Nishida S, Ogawa S, Okuno S, Olsen S.L, Pakhlov P, Pakhlova G, Park C.W, Park H, Pedlar T.K, Pestotnik R, Petri? M, Piilonen L.E, Ribe?l E, Ritter M, Rostomyan A, Sakai Y, Sandilya S, Santel D, Santelj L, Sanuki T, Sato Y, Savinov V, Schneider O, Schnell G, Schwanda C, Semmler D, Senyo K, Seon O, Sevior M.E, Shebalin V, Shen C.P, Shibata T.-A, Shiu J.-G, Shwartz B, Sibidanov A, Simon F, Sohn Y.-S, Sokolov A, Solovieva E, Stani? S, Stari? M, Steder M, Sumihama M, Sumiyoshi T, Tamponi U, Tatishvili G, Teramoto Y, Uchida M, Uglov T, Unno Y, Uno S, Van Hulse C, Vanhoefer P, Varner G, Vorobyev V, Wagner M.N, Wang C.H, Wang M.-Z, Wang P, Watanabe Y, Williams K.M, Won E, Yamaoka J, Yashchenko S, Yook Y, Zhang Z.P, Zhulanov V, Zupanc A

    Journal of High Energy Physics   2015 ( 6 )   2015年6月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.1007/JHEP06(2015)132

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    その他リンク: http://orcid.org/0000-0002-1018-219X

  • Study of D∗∗ production and light hadronic states in the B ¯ 0 →d∗+ωπ- decay STUDY of D∗∗ PRODUCTION and LIGHT ⋯ D. MATVIENKO et al. 査読

    D. Matvienko, D. Matvienko, A. Kuzmin, A. Kuzmin, S. Eidelman, S. Eidelman, A. Abdesselam, I. Adachi, I. Adachi, H. Aihara, S. Al Said, S. Al Said, K. Arinstein, K. Arinstein, D. M. Asner, V. Aulchenko, V. Aulchenko, T. Aushev, T. Aushev, R. Ayad, V. Babu, I. Badhrees, I. Badhrees, S. Bahinipati, A. M. Bakich, V. Bansal, V. Bhardwaj, B. Bhuyan, J. Biswal, A. Bobrov, A. Bobrov, A. Bondar, A. Bondar, G. Bonvicini, A. Bozek, M. Bračko, M. Bračko, T. E. Browder, D. Červenkov, A. Chen, B. G. Cheon, K. Chilikin, R. Chistov, K. Cho, V. Chobanova, S. K. Choi, Y. Choi, D. Cinabro, J. Dalseno, J. Dalseno, J. Dingfelder, Z. DoleŽal, Z. Drásal, A. Drutskoy, A. Drutskoy, D. Dutta, D. Epifanov, H. Farhat, J. E. Fast, T. Ferber, B. G. Fulsom, V. Gaur, N. Gabyshev, N. Gabyshev, A. Garmash, A. Garmash, D. Getzkow, R. Gillard, Y. M. Goh, P. Goldenzweig, B. Golob, B. Golob, T. Hara, T. Hara, K. Hayasaka, H. Hayashii, X. H. He, W. S. Hou, T. Iijima, T. Iijima, G. Inguglia, A. Ishikawa, R. Itoh, R. Itoh, Y. Iwasaki, I. Jaegle, D. Joffe, K. K. Joo, T. Julius, T. Kawasaki, D. Y. Kim, J. B. Kim, J. H. Kim, K. T. Kim, M. J. Kim, S. H. Kim, Y. J. Kim, B. R. Ko, P. Kodyš, S. Korpar

    Physical Review D - Particles, Fields, Gravitation and Cosmology   92 ( 1 )   2015年5月

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    © 2015 American Physical Society. We report on the first observations of B¯0→D1(2430)0ω, B¯0→D1(2420)0ω, and B¯0→D2∗(2460)0ω decays. The B¯0→D∗+ρ(1450)- decay is also observed. The branching fraction measurements are based on (771.6±10.6)×106 BB¯ events collected at the (4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. The fractions of longitudinal polarization of the D∗∗ states as well as partial wave fractions of the D1(2430)0 are obtained. We also set a 90% confidence level upper limit for the product of branching fractions of B(B¯0→D∗+b1(1235)-)×B(b1(1235)-→ωπ-). The measurements show evidence of nontrivial final-state interaction phases for the ρ-meson-like amplitudes.

    DOI: 10.1103/PhysRevD.92.012013

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  • Search for the Dark Photon and the Dark Higgs Boson at Belle 査読

    I. Jaegle, I. Adachi, H. Aihara, S. Al Said, D. M. Asner, T. Aushev, R. Ayad, A. M. Bakich, V. Bansal, M. Barrett, B. Bhuyan, A. Bozek, M. Bracko, T. E. Browder, D. Cervenkov, M. -C. Chang, B. G. Cheon, K. Chilikin, K. Cho, V. Chobanova, S. -K. Choi, Y. Choi, D. Cinabro, J. Dalseno, Z. Dolezal, Z. Drasal, A. Drutskoy, D. Dutta, S. Eidelman, D. Epifanov, H. Farhat, J. E. Fast, T. Ferber, O. Frost, V. Gaur, N. Gabyshev, S. Ganguly, A. Garmash, D. Getzkow, R. Gillard, Y. M. Goh, B. Golob, O. Grzymkowska, K. Hayasaka, H. Hayashii, X. H. He, M. Hedges, W. -S. Hou, T. Iijima, K. Inami, A. Ishikawa, Y. Iwasaki, T. Julius, K. H. Kang, E. Kato, T. Kawasaki, D. Y. Kim, J. B. Kim, J. H. Kim, S. H. Kim, K. Kinoshita, B. R. Ko, P. Kodys, S. Korpar, P. Krizan, P. Krokovny, A. Kuzmin, Y. -J. Kwon, J. S. Lange, I. S. Lee, P. Lewis, L. Li Gioi, J. Libby, D. Liventsev, D. Matvienko, H. Miyata, R. Mizuk, G. B. Mohanty, A. Moll, R. Mussa, E. Nakano, M. Nakao, N. K. Nisar, S. Nishida, S. Ogawa, P. Pakhlov, G. Pakhlova, H. Park, T. K. Pedlar, L. Pesantez, M. Petric, L. E. Piilonen, M. Ritter, A. Rostomyan, Y. Sakai, S. Sandilya, L. Santelj, T. Sanuki, Y. Sato, V. Savinov, O. Schneider, G. Schnell, C. Schwanda, D. Semmler, K. Senyo, O. Seon, I. Seong, M. E. Sevior, V. Shebalin, T. -A. Shibata, J. -G. Shiu, B. Shwartz, F. Simon, R. Sinha, Y. -S. Sohn, M. Staric, M. Sumihama, K. Sumisawa, U. Tamponi, G. Tatishvili, Y. Teramoto, F. Thorne, M. Uchida, S. Uehara, Y. Unno, S. Uno, S. E. Vahsen, C. Van Hulse, P. Vanhoefer, G. Varner, A. Vinokurova, M. N. Wagner, C. H. Wang, M. -Z. Wang, P. Wang, X. L. Wang, M. Watanabe, Y. Watanabe, K. M. Williams, E. Won, J. Yamaoka, S. Yashchenko, Y. Yook, Y. Yusa, V. Zhilich, V. Zhulanov, A. Zupanc

    PHYSICAL REVIEW LETTERS   114 ( 21 )   211801-1 - 211801-8   2015年5月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    The dark photon A' and the dark Higgs boson h' are hypothetical constituents featured in a number of recently proposed dark sector models. Assuming prompt decays of both dark particles, we search for their production in the so-called Higgstrahlung channel e(+)e(-) -&gt; A'h', with h' -&gt; A'A'. We investigate ten exclusive final states with A' -&gt; e(+)e(-), mu(+)mu(-), or pi(+)pi(-) in the mass ranges 0.1 GeV/c(2) &lt; m(A') &lt; 3.5 GeV/c(2) and 0.2 GeV/c(2) &lt; m(h') &lt; 10.5 GeV/c(2). We also investigate three inclusive final states 2(e(+)e(-))X, 2(mu(+)mu(-))X, and (e(+)e(-))(mu(+)mu(-))X, where X denotes a dark photon candidate detected via missing mass, in the mass ranges 1.1 GeV/c(2) &lt; m(A') &lt; 3.5 GeV/c(2) and 2.2 GeV/c(2) &lt; m(h') &lt; 10.5 GeV/c(2). Using the entire 977 fb(-1) data set collected by Belle, we observe no significant signal. We obtain individual and combined 90% credibility level upper limits on the branching fraction times the Born cross section, B x sigma(Born), on the Born cross section sigma(Born), and on the dark photon coupling to the dark Higgs boson times the kinetic mixing between the standard model photon and the dark photon, alpha(D) x epsilon(2). These limits improve upon and cover wider mass ranges than previous experiments. The limits from the final states 3(pi(+)pi(-)) and 2(e(+)e(-))X are the first placed by any experiment. For alpha(D) equal to 1/137, m(h') &lt; 8 GeV/c(2), and m(A') &lt; 1 GeV/c(2), we exclude values of the mixing parameter epsilon above similar to 8 x 10(-4).

    DOI: 10.1103/PhysRevLett.114.211801

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  • Measurements of B → D ¯ Ds0∗+ (2317) decay rates and a search for isospin partners of the Ds0∗+ (2317) 査読

    Choi S.-K, Olsen S.L, Abdesselam A, Adachi I, Aihara H, Arinstein K, Asner D.M, Aushev T, Ayad R, Babu V, Badhrees I, Bakich A.M, Barberio E, Bhardwaj V, Bhuyan B, Bonvicini G, Bozek A, Bra?ko M, Browder T.E, ?ervenkov D, Chen A, Cheon B.G, Chilikin K, Chistov R, Cho K, Chobanova V, Choi Y, Cinabro D, Dalseno J, Danilov M, Dole?al Z, Dr{\'a}sal Z, Drutskoy A, Dutta D, Eidelman S, Farhat H, Fast J.E, Ferber T, Fulsom B.G, Gaur V, Gabyshev N, Garmash A, Getzkow D, Gillard R, Glattauer R, Goh Y.M, Golob B, Haba J, Hara T, Hayasaka K, Hayashii H, He X.H, Horiguchi T, Hou W.-S, Iijima T, Inami K, Inguglia G, Ishikawa A, Itoh R, Iwasaki Y, Jaegle I, Joffe D, Julius T, Kang K.H, Kato E, Katrenko P, Kawasaki T, Kim B.H, Kim D.Y, Kim H.J, Kim J.B, Kim J.H, Kim K.T, Kim S.H, Kim Y.J, Kinoshita K, Ko B.R, Kody? P, Korpar S, Kri?an P, Krokovny P, Kumita T, Kuzmin A, Kwon Y.-J, Lange J.S, Lee I.S, Lewis P, Li H, Li Gioi L, Libby J, Lukin P, Matvienko D, Miyabayashi K, Miyata H, Mizuk R, Mohanty G.B, Moll A, Moon H.K, Mori T, Mussa R, Nakano E, Nakao M, Nanut T, Natkaniec Z, Nayak M, Nisar N.K, Nishida S, Ogawa S, Okuno S, Pakhlov P, Pakhlova G, Pal B, Park C.W, Park H, Pedlar T.K, Pes{\'a}ntez L, Pestotnik R, Petri? M, Piilonen L.E, Ribe?l E, Ritter M, Rostomyan A, Ryu S, Sakai Y, Sandilya S, Santelj L, Sanuki T, Sato Y, Savinov V, Schneider O, Schnell G, Schwanda C, Senyo K, Sevior M.E, Shapkin M, Shebalin V, Shen C.P, Shibata T.-A, Shiu J.-G, Shwartz B, Sibidanov A, Simon F, Sohn Y.-S, Sokolov A, Solovieva E, Stari? M, Steder M, Tamponi U, Tanaka S, Tanida K, Teramoto Y, Trusov V, Uchida M, Uglov T, Unno Y, Uno S, Urquijo P, Usov Y, Van Hulse C, Vanhoefer P, Varner G, Vinokurova A, Vorobyev V, Vossen A, Wagner M.N, Wang C.H, Wang M.-Z, Wang X.L, Watanabe Y, Williams K.M, Won E, Yashchenko S, Zhang Z.P, Zhilich V, Zhulanov V, Zupanc A

    Physical Review D - Particles, Fields, Gravitation and Cosmology   91 ( 9 )   2015年5月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.1103/PhysRevD.91.092011

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    その他リンク: http://orcid.org/0000-0002-1018-219X

  • Search for the decay B+ -&gt; (K)over-bar*K-0*(+) at Belle 査読

    Y. M. Goh, Y. Unno, B. G. Cheon, A. Abdesselam, I. Adachi, H. Aihara, S. Al Said, K. Arinstein, D. M. Asner, V. Aulchenko, T. Aushev, R. Ayad, V. Bansal, E. Barberio, B. Bhuyan, A. Bozek, M. Bracko, T. E. Browder, A. Chen, V. Chobanova, Y. Choi, D. Cinabro, Z. Dolezal, Z. Drasal, D. Dutta, S. Eidelman, H. Farhat, T. Ferber, V. Gaur, A. Garmash, R. Gillard, B. Golob, J. Haba, T. Hara, K. Hayasaka, H. Hayashii, X. H. He, W. -S. Hou, M. Huschle, T. Iijima, A. Ishikawa, R. Itoh, Y. Iwasaki, I. Jaegle, D. Joffe, T. Julius, K. H. Kang, T. Kawasaki, D. Y. Kim, H. J. Kim, J. B. Kim, J. H. Kim, K. T. Kim, M. J. Kim, S. H. Kim, B. R. Ko, P. Kodys, S. Korpar, P. Krizan, P. Krokovny, T. Kuhr, Y. -J. Kwon, J. S. Lange, I. S. Lee, Y. Li, L. Li Gioi, J. Libby, D. Liventsev, P. Lukin, K. Matsuoka, D. Matvienko, H. Miyake, H. Miyata, R. Mizuk, G. B. Mohanty, S. Mohanty, A. Moll, H. K. Moon, R. Mussa, E. Nakano, M. Nakao, T. Nanut, M. Nayak, N. K. Nisar, S. Nishida, S. Ogawa, S. Okuno, W. Ostrowicz, G. Pakhlova, C. W. Park, H. Park, M. Petric, L. E. Piilonen, E. Ribezl, M. Ritter, A. Rostomyan, Y. Sakai, S. Sandilya, T. Sanuki, V. Savinov, O. Schneider, G. Schnell, C. Schwanda, K. Senyo, M. E. Sevior, V. Shebalin, T. -A. Shibata, J. -G. Shiu, B. Shwartz, F. Simon, R. Sinha, Y. -S. Sohn, A. Sokolov, E. Solovieva, M. Staric, M. Sumihama, T. Sumiyoshi, U. Tamponi, G. Tatishvili, Y. Teramoto, V. Trusov, M. Uchida, S. Uno, Y. Usov, C. Van Hulse, P. Vanhoefer, G. Varner, A. Vinokurova, C. H. Wang, M. -Z. Wang, P. Wang, Y. Watanabe, K. M. Williams, E. Won, S. Yashchenko, Y. Yusa, Z. P. Zhang, V. Zhilich

    PHYSICAL REVIEW D   91 ( 7 )   071101-1 - 071101-8   2015年4月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We report a search for the rare charmless decay B+ -&gt; (K) over bar*K-0*(+) using a data sample of 772 x 10(6) B (B) over bar pairs collected at the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. No statistically significant signal is found and a 90% confidence- level upper limit is set on the decay branching fraction of B(B+ -&gt; (K) over bar*K-0*(+)) &lt; 1.31 x 10(-6).

    DOI: 10.1103/PhysRevD.91.071101

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  • Amplitude analysis of e(+)e(-) -&gt; Upsilon(nS)pi(+)pi(-) at root s=10.866 GeV 査読

    A. Garmash, A. Bondar, A. Kuzmin, A. Abdesselam, I. Adachi, H. Aihara, S. Al Said, D. M. Asner, V. Aulchenko, T. Aushev, R. Ayad, A. M. Bakich, A. Bala, V. Bhardwaj, A. Bobrov, G. Bonvicini, A. Bozek, M. Bracko, T. E. Browder, D. Cervenkov, V. Chekelian, A. Chen, B. G. Cheon, K. Chilikin, R. Chistov, K. Cho, V. Chobanova, Y. Choi, D. Cinabro, J. Dalseno, Z. Dolezal, A. Drutskoy, D. Dutta, S. Eidelman, D. Epifanov, H. Farhat, J. E. Fast, T. Ferber, A. Frey, O. Frost, V. Gaur, S. Ganguly, R. Gillard, R. Glattauer, Y. M. Goh, B. Golob, J. Haba, T. Hara, K. Hayasaka, H. Hayashii, X. H. He, Y. Hoshi, W. -S. Hou, Y. B. Hsiung, H. J. Hyun, T. Iijima, A. Ishikawa, R. Itoh, Y. Iwasaki, T. Iwashita, I. Jaegle, T. Julius, J. H. Kang, E. Kato, P. Katrenko, H. Kawai, T. Kawasaki, H. Kichimi, C. Kiesling, D. Y. Kim, J. B. Kim, J. H. Kim, K. T. Kim, M. J. Kim, Y. J. Kim, K. Kinoshita, J. Klucar, B. R. Ko, P. Kodys, S. Korpar, P. Krizan, P. Krokovny, T. Kuhr, Y. -J. Kwon, S. -H. Lee, Y. Li, L. Li Gioi, J. Libby, C. Liu, Z. Q. Liu, D. Liventsev, P. Lukin, D. Matvienko, K. Miyabayashi, H. Miyata, R. Mizuk, G. B. Mohanty, A. Moll, R. Mussa, E. Nakano, M. Nakao, Z. Natkaniec, M. Nayak, E. Nedelkovska, N. K. Nisar, S. Nishida, O. Nitoh, S. Okuno, S. L. Olsen, W. Ostrowicz, P. Pakhlov, H. Park, H. K. Park, T. K. Pedlar, R. Pestotnik, M. Petric, L. E. Piilonen, E. Ribezl, M. Ritter, M. Roehrken, A. Rostomyan, S. Ryu, T. Saito, Y. Sakai, S. Sandilya, D. Santel, T. Sanuki, Y. Sato, O. Schneider, G. Schnell, A. J. Schwartz, D. Semmler, K. Senyo, M. E. Sevior, M. Shapkin, V. Shebalin, C. P. Shen, T. -A. Shibata, J. -G. Shiu, B. Shwartz, F. Simon, Y. -S. Sohn, A. Sokolov, E. Solovieva, S. Stanic, M. Staric, M. Steder, T. Sumiyoshi, U. Tamponi, K. Tanida, G. Tatishvili, Y. Teramoto, K. Trabelsi, M. Uchida, Y. Unno, S. Uno, P. Urquijo, Y. Usov, C. Van Hulse, P. Vanhoefer, G. Varner, A. Vinokurova, V. Vorobyev, M. N. Wagner, C. H. Wang, P. Wang, X. L. Wang, M. Watanabe, Y. Watanabe, K. M. Williams, E. Won, H. Yamamoto, Y. Yamashita, S. Yashchenko, Y. Yook, C. Z. Yuan, Z. P. Zhang, V. Zhilich, A. Zupanc

    PHYSICAL REVIEW D   91 ( 7 )   072003-1 - 072003-16   2015年4月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We report results on studies of the e(+)e(-) annihilation into three-body Upsilon(nS)pi(+)pi(-) (n = 1, 2, 3) final states including measurements of cross sections and the full amplitude analysis. The cross sections measured at root s = 10.866 GeV and corrected for the initial state radiation are sigma(e(+)e(-) --&gt; Upsilon(1S)pi(+)pi(-)) = (2.27 +/- 0.12 +/- 0.14) pb, sigma(e(+)e(-) --&gt; Upsilon(2S)pi(+)pi(-)) = (4.07 +/- 0.16 +/- 0.45) pb, and sigma(e(+)e(-) --&gt; Upsilon(3S)pi(+)pi(-)) = (1.46 +/- 0.09 +/- 0.16) pb. Amplitude analysis of the three-body Upsilon(nS)pi(+)pi(-) final states strongly favors I-G(J(P)) = 1(+)(1(+)) quantum-number assignments for the two bottomonium-like Z(b)(+/-) states, recently observed in the Upsilon(nS)pi(+) and h(b)(mP)pi(+)(m = 1, 2) decay channels. The results are obtained with a 121.4 fb(-1) data sample collected with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider.

    DOI: 10.1103/PhysRevD.91.072003

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  • Measurement of the (B)over-bar -&gt; X-s gamma branching fraction with a sum of exclusive decays 査読

    T. Saito, A. Ishikawa, H. Yamamoto, A. Abdesselam, I. Adachi, H. Aihara, S. Al Said, K. Arinstein, D. M. Asner, T. Aushev, R. Ayad, A. M. Bakich, V. Bansal, B. Bhuyan, A. Bobrov, A. Bondar, G. Bonvicini, A. Bozek, M. Bracko, T. E. Browder, D. Cervenkov, A. Chen, B. G. Cheon, K. Chilikin, K. Cho, V. Chobanova, S. -K. Choi, Y. Choi, D. Cinabro, J. Dalseno, M. Danilov, J. Dingfelder, Z. Dolezal, Z. Drasal, A. Drutskoy, S. Eidelman, H. Farhat, J. E. Fast, T. Ferber, V. Gaur, N. Gabyshev, S. Ganguly, A. Garmash, D. Getzkow, R. Gillard, Y. M. Goh, B. Golob, J. Haba, T. Hara, J. Hasenbusch, K. Hayasaka, H. Hayashii, X. H. He, T. Higuchi, T. Horiguchi, W. -S. Hou, H. J. Hyun, T. Iijima, K. Inami, R. Itoh, Y. Iwasaki, I. Jaegle, D. Joffe, T. Julius, K. H. Kang, E. Kato, T. Kawasaki, H. Kichimi, C. Kiesling, D. Y. Kim, H. J. Kim, J. B. Kim, J. H. Kim, M. J. Kim, S. H. Kim, Y. J. Kim, K. Kinoshita, B. R. Ko, P. Kodys, S. Korpar, P. Krizan, P. Krokovny, B. Kronenbitter, T. Kuhr, Y. -J. Kwon, J. S. Lange, I. S. Lee, Y. Li, L. Li Gioi, J. Libby, D. Liventsev, P. Lukin, D. Matvienko, K. Miyabayashi, H. Miyata, R. Mizuk, G. B. Mohanty, A. Moll, T. Mori, R. Mussa, E. Nakano, M. Nakao, H. Nakazawa, T. Nanut, Z. Natkaniec, N. K. Nisar, S. Nishida, S. Ogawa, S. Okuno, S. L. Olsen, C. Oswald, P. Pakhlov, G. Pakhlova, C. W. Park, H. Park, T. K. Pedlar, R. Pestotnik, M. Petric, L. E. Piilonen, E. Ribezl, M. Ritter, A. Rostomyan, S. Ryu, Y. Sakai, S. Sandilya, L. Santelj, T. Sanuki, Y. Sato, V. Savinov, O. Schneider, G. Schnell, C. Schwanda, A. J. Schwartz, K. Senyo, O. Seon, M. E. Sevior, V. Shebalin, C. P. Shen, T. -A. Shibata, J. -G. Shiu, B. Shwartz, A. Sibidanov, F. Simon, Y. -S. Sohn, E. Solovieva, M. Staric, M. Steder, T. Sumiyoshi, U. Tamponi, G. Tatishvili, Y. Teramoto, K. Trabelsi, M. Uchida, T. Uglov, Y. Unno, S. Uno, P. Urquijo, Y. Ushiroda, Y. Usov, C. Van Hulse, P. Vanhoefer, G. Varner, A. Vinokurova, V. Vorobyev, A. Vossen, M. N. Wagner, C. H. Wang, P. Wang, X. L. Wang, M. Watanabe, Y. Watanabe, K. M. Williams, E. Won, J. Yamaoka, S. Yashchenko, Y. Yook, Y. Yusa, Z. P. Zhang, V. Zhilich, V. Zhulanov, A. Zupanc

    PHYSICAL REVIEW D   91 ( 5 )   052004-1 - 052004-13   2015年3月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We use 772 x 10(6) B (B) over bar meson pairs collected at the gamma(4S) resonance with the Belle detector to measure the branching fraction for (B) over bar -&gt; X-s gamma Our measurement uses a sum-of-exclusives approach in which 38 of the hadronic final states with strangeness equal to +1, denoted by X-s, are reconstructed. The inclusive branching fraction for M-Xs &lt; 2.8 GeV/c(2), which corresponds to a minimum photon energy of 1.9 GeV, is measured to be B(&lt;(B)over bar&gt; -&gt; X-s gamma) = (3.51 +/- 0.17 +/- 0.33) x 10(-4), where the first uncertainty is statistical and the second is systematic.

    DOI: 10.1103/PhysRevD.91.052004

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  • Search for B+ -&gt; e(+)nu(e) and B+ -&gt; mu(+)nu(mu) decays using hadronic tagging 査読

    Y. Yook, Y. -J. Kwon, A. Abdesselam, I. Adachi, S. Al Said, K. Arinstein, D. M. Asner, V. Aulchenko, T. Aushev, R. Ayad, S. Bahinipati, A. M. Bakich, A. Bala, V. Bansal, V. Bhardwaj, B. Bhuyan, A. Bondar, G. Bonvicini, A. Bozek, M. Bracko, T. E. Browder, D. Cervenkov, V. Chekelian, A. Chen, B. G. Cheon, K. Chilikin, R. Chistov, K. Cho, V. Chobanova, Y. Choi, Z. Dolezal, Z. Drasal, A. Drutskoy, D. Dutta, K. Dutta, S. Eidelman, H. Farhat, J. E. Fast, T. Ferber, O. Frost, V. Gaur, N. Gabyshev, S. Ganguly, A. Garmash, R. Gillard, R. Glattauer, Y. M. Goh, B. Golob, O. Grzymkowska, J. Haba, K. Hara, K. Hayasaka, H. Hayashii, X. H. He, M. Heck, T. Higuchi, Y. Horii, Y. Hoshi, W. -S. Hou, T. Iijima, A. Ishikawa, R. Itoh, Y. Iwasaki, T. Iwashita, I. Jaegle, T. Julius, E. Kato, P. Katrenko, T. Kawasaki, C. Kiesling, D. Y. Kim, J. B. Kim, J. H. Kim, K. T. Kim, M. J. Kim, Y. J. Kim, K. Kinoshita, J. Klucar, B. R. Ko, P. Kodys, S. Korpar, P. Krizan, P. Krokovny, T. Kuhr, A. Kuzmin, J. S. Lange, Y. Li, L. Li Gioi, C. Liu, Y. Liu, D. Liventsev, P. Lukin, K. Miyabayashi, H. Miyata, G. B. Mohanty, A. Moll, R. Mussa, Y. Nagasaka, I. Nakamura, E. Nakano, M. Nakao, Z. Natkaniec, M. Nayak, E. Nedelkovska, N. K. Nisar, S. Nishida, O. Nitoh, S. Ogawa, S. Okuno, P. Pakhlov, C. -S. Park, H. Park, H. K. Park, T. K. Pedlar, R. Pestotnik, M. Petric, L. E. Piilonen, M. Ritter, M. Roehrken, A. Rostomyan, S. Ryu, T. Saito, Y. Sakai, S. Sandilya, L. Santelj, T. Sanuki, Y. Sato, V. Savinov, O. Schneider, G. Schnell, C. Schwanda, K. Senyo, O. Seon, M. E. Sevior, V. Shebalin, C. P. Shen, T. -A. Shibata, J. -G. Shiu, B. Shwartz, A. Sibidanov, F. Simon, Y. -S. Sohn, A. Sokolov, E. Solovieva, M. Staric, M. Steder, M. Sumihama, T. Sumiyoshi, G. Tatishvili, Y. Teramoto, K. Trabelsi, M. Uchida, T. Uglov, P. Urquijo, Y. Usov, C. Van Hulse, P. Vanhoefer, G. Varner, K. E. Varvell, A. Vinokurova, V. Vorobyev, M. N. Wagner, C. H. Wang, M. -Z. Wang, P. Wang, X. L. Wang, M. Watanabe, Y. Watanabe, S. Wehle, K. M. Williams, E. Won, Y. Yamashita, S. Yashchenko, Y. Yusa, Z. P. Zhang, V. Zhilich, A. Zupanc

    PHYSICAL REVIEW D   91 ( 5 )   052016-1 - 052016-8   2015年3月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We present a search for the rare leptonic decays B+ -&gt; e(+)nu(e) and B+ -&gt; mu(+) nu(mu) using the full Upsilon(4S) data sample of 772 x 10(6) B (B) over bar pairs collected with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. One of the B mesons from the Upsilon(4S) -&gt; B (B) over bar decay is fully reconstructed in a hadronic mode, while the recoiling side is analyzed for the signal decay. We find no evidence of a signal in any of the decay modes. Upper limits of the corresponding branching fractions are determined as beta(B+ -&gt; e(+)nu(e)) &lt; 3.5 x 10(-6) and beta(B+ -&gt; mu(+)nu(mu)) &lt; 2.7 x 10(-6) at 90% confidence level.

    DOI: 10.1103/PhysRevD.91.052016

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  • Measurement of B-0 -&gt; (Ds-KS0)pi(+) and B+ -&gt; Ds-K+K+ branching fractions 査読

    J. Wiechczynski, J. Stypula, A. Abdesselam, I. Adachi, K. Adamczyk, H. Aihara, S. Al Said, K. Arinstein, D. M. Asner, V. Aulchenko, T. Aushev, R. Ayad, A. M. Bakich, V. Bansal, V. Bhardwaj, B. Bhuyan, A. Bobrov, A. Bondar, G. Bonvicini, A. Bozek, M. Bracko, T. E. Browder, D. Cervenkov, V. Chekelian, B. G. Cheon, K. Cho, V. Chobanova, S. -K. Choi, Y. Choi, D. Cinabro, J. Dalseno, M. Danilov, J. Dingfelder, Z. Dolezal, Z. Drasal, A. Drutskoy, S. Eidelman, H. Farhat, J. E. Fast, T. Ferber, O. Frost, V. Gaur, N. Gabyshev, S. Ganguly, A. Garmash, D. Getzkow, R. Gillard, Y. M. Goh, O. Grzymkowska, J. Haba, T. Hara, K. Hayasaka, H. Hayashii, X. H. He, W. -S. Hou, M. Huschle, H. J. Hyun, T. Iijima, A. Ishikawa, R. Itoh, Y. Iwasaki, I. Jaegle, D. Joffe, K. K. Joo, T. Julius, K. H. Kang, E. Kato, T. Kawasaki, H. Kichimi, D. Y. Kim, J. B. Kim, J. H. Kim, M. J. Kim, S. H. Kim, Y. J. Kim, K. Kinoshita, B. R. Ko, P. Kodys, P. Krizan, P. Krokovny, T. Kuhr, T. Kumita, A. Kuzmin, Y. -J. Kwon, J. S. Lange, I. S. Lee, Y. Li, L. Li Gioi, J. Libby, D. Liventsev, P. Lukin, D. Matvienko, K. Miyabayashi, H. Miyata, R. Mizuk, G. B. Mohanty, A. Moll, T. Mori, R. Mussa, M. Nakao, T. Nanut, Z. Natkaniec, N. K. Nisar, S. Nishida, S. Ogawa, S. Okuno, P. Pakhlov, G. Pakhlova, C. W. Park, H. Park, T. K. Pedlar, M. Petric, L. E. Piilonen, E. Ribezl, M. Ritter, A. Rostomyan, Y. Sakai, S. Sandilya, L. Santelj, T. Sanuki, Y. Sato, V. Savinov, O. Schneider, G. Schnell, C. Schwanda, K. Senyo, O. Seon, M. E. Sevior, V. Shebalin, C. P. Shen, T. -A. Shibata, J. -G. Shiu, B. Shwartz, A. Sibidanov, F. Simon, Y. -S. Sohn, E. Solovieva, M. Staric, M. Steder, M. Sumihama, U. Tamponi, K. Tanida, G. Tatishvili, Y. Teramoto, F. Thorne, K. Trabelsi, M. Uchida, T. Uglov, Y. Unno, S. Uno, P. Urquijo, Y. Usov, C. Van Hulse, P. Vanhoefer, G. Varner, A. Vinokurova, V. Vorobyev, A. Vossen, M. N. Wagner, C. H. Wang, M. -Z. Wang, P. Wang, M. Watanabe, Y. Watanabe, K. M. Williams, E. Won, J. Yamaoka, S. Yashchenko, Y. Yook, Y. Yusa, Z. P. Zhang, V. Zhilich, V. Zhulanov, A. Zupanc

    PHYSICAL REVIEW D   91 ( 3 )   032008-1 - 032008-9   2015年2月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We report a measurement of the B-0 and B+ meson decays to the (Ds-KS0)pi(+) and Ds-K+K+ final states, respectively, using 657 x 10(6)B (B) over bar pairs collected at the gamma(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. Using the D-s(-) -&gt; phi pi(-), K*(892)K-0(-) and (KSK-)-K-0 decay modes for the D-s reconstruction, we measure the following branching fractions: B(B-0 -&gt; (Ds-KS0)pi(+))= [0.47 +/- 0.06(stat) +/- 0.05(syst)] x 10(-4) and B(B+ -&gt; Ds-K+K+)= [0.93 +/- 0.22(stat) +/- 0.10(syst)] x 10(-5). We find the ratio of the branching fraction of B+ -&gt; Ds-K+K+ to that of the analogous Cabibbo-favored B+ -&gt; Ds-K+pi(+) decay to be R-B= 0.054 +/- 0.013(stat) +/- 0.006(syst), which is consistent with the naive factorization model. We also observe a deviation of the DsK invariant-mass distribution from the three-body phase-space model for both studied decays.

    DOI: 10.1103/PhysRevD.91.032008

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  • Monitoring system for the belle II distributed computing 査読

    Kiyoshi Hayasaka

    Journal of Physics: Conference Series   664 ( 6 )   2015年

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    記述言語:英語   掲載種別:研究論文(国際会議プロシーディングス)   出版者・発行元:Institute of Physics Publishing  

    Belle II experiment is a next-generation B-factory at KEK in Japan, which will collect 50 ab-1 data sample for 10 years, that corresponds to about 5 x 1010 BB-pair events. To handle such a huge data sample, Belle II has adopted the distributed computing. A monitoring system is necessary to operate the computing system stably and we have been developing the monitoring system for Belle II computing based on our experience we have gained through the mass production test of the Monte Carlo simulation events. In this paper, we introduce our monitoring system, especially, the one we call "active-way" monitoring.

    DOI: 10.1088/1742-6596/664/6/062020

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  • Job monitoring on DIRAC for Belle II distributed computing 査読

    Yuji Kato, Kiyoshi Hayasaka, Takanori Hara, Hideki Miyake, Ikuo Ueda

    Journal of Physics: Conference Series   664 ( 6 )   2015年

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    記述言語:英語   掲載種別:研究論文(国際会議プロシーディングス)   出版者・発行元:Institute of Physics Publishing  

    We developed a monitoring system for Belle II distributed computing, which consists of active and passive methods. In this paper we describe the passive monitoring system, where information stored in the DIRAC database is processed and visualized. We divide the DIRAC workload management flow into steps and store characteristic variables which indicate issues. These variables are chosen carefully based on our experiences, then visualized. As a result, we are able to effectively detect issues. Finally, we discuss the future development for automating log analysis, notification of issues, and disabling problematic sites.

    DOI: 10.1088/1742-6596/664/6/062023

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  • Evidence of (1S) →j /ψ+χc1 and search for double-charmonium production in (1S) and (2S) decays 査読

    S. D. Yang, C. P. Shen, Y. Ban, A. Abdesselam, I. Adachi, H. Aihara, S. Al Said, K. Arinstein, D. M. Asner, V. Aulchenko, T. Aushev, R. Ayad, A. M. Bakich, V. Bansal, P. Behera, B. Bhuyan, A. Bobrov, A. Bozek, M. Bračko, T. E. Browder, D. Červenkov, V. Chekelian, A. Chen, B. G. Cheon, K. Chilikin, R. Chistov, K. Cho, V. Chobanova, S. K. Choi, Y. Choi, D. Cinabro, J. Dalseno, M. Danilov, J. Dingfelder, Z. DoleŽal, Z. Drásal, A. Drutskoy, K. Dutta, S. Eidelman, H. Farhat, J. E. Fast, T. Ferber, V. Gaur, N. Gabyshev, S. Ganguly, A. Garmash, R. Gillard, Y. M. Goh, B. Golob, J. Haba, T. Hara, K. Hayasaka, H. Hayashii, X. H. He, W. S. Hou, M. Huschle, T. Iijima, K. Inami, A. Ishikawa, R. Itoh, I. Jaegle, D. Joffe, K. K. Joo, T. Julius, T. Kawasaki, D. Y. Kim, H. J. Kim, J. B. Kim, J. H. Kim, K. T. Kim, K. Kinoshita, B. R. Ko, P. Kodyš, S. Korpar, P. KriŽan, P. Krokovny, A. Kuzmin, Y. J. Kwon, J. S. Lange, J. Li, Y. Li, L. Li Gioi, J. Libby, D. Liventsev, P. Lukin, K. Miyabayashi, H. Miyata, A. Moll, R. Mussa, E. Nakano, M. Nakao, T. Nanut, N. K. Nisar, S. Nishida, S. Okuno, W. Ostrowicz, C. W. Park, H. Park, T. K. Pedlar, R. Pestotnik

    Physical Review D - Particles, Fields, Gravitation and Cosmology   90 ( 11 )   112008-1 - 112008-9   2014年12月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    © 2014 American Physical Society. Using data samples of 102×106 (1S) and 158×106 (2S) events collected with the Belle detector, a first experimental search has been made for double-charmonium production in the exclusive decays (1S,2S)→J/ψ(ψ′)+X, where X=ηc, χcJ(J=0,1,2), ηc(2S), X(3940), and X(4160). No significant signal is observed in the spectra of the mass recoiling against the reconstructed J/ψ or ψ′ except for the evidence of χc1 production with a significance of 4.6σ for (1S)→J/ψ+χc1. The measured branching fraction B((1S)→J/ψ+χc1) is [3.90±1.21(stat)±0.23(syst)]×10-6. The 90% C.L. upper limits on the branching fractions of the other modes having a significance of less than 3σ are determined. These results are consistent with theoretical calculations using the nonrelativistic QCD factorization approach.

    DOI: 10.1103/PhysRevD.90.112008

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  • Evidence of (1S) →j /ψ+χc1 and search for double-charmonium production in (1S) and (2S) decays 査読

    Yang S.D, Shen C.P, Ban Y, Abdesselam A, Adachi I, Aihara H, Al Said S, Arinstein K, Asner D.M, Aulchenko V, Aushev T, Ayad R, Bakich A.M, Bansal V, Behera P, Bhuyan B, Bobrov A, Bozek A, Bra?ko M, Browder T.E, ?ervenkov D, Chekelian V, Chen A, Cheon B.G, Chilikin K, Chistov R, Cho K, Chobanova V, Choi S.-K, Choi Y, Cinabro D, Dalseno J, Danilov M, Dingfelder J, Dole?al Z, Dr{\'a}sal Z, Drutskoy A, Dutta K, Eidelman S, Farhat H, Fast J.E, Ferber T, Gaur V, Gabyshev N, Ganguly S, Garmash A, Gillard R, Goh Y.M, Golob B, Haba J, Hara T, Hayasaka K, Hayashii H, He X.H, Hou W.-S, Huschle M, Iijima T, Inami K, Ishikawa A, Itoh R, Jaegle I, Joffe D, Joo K.K, Julius T, Kawasaki T, Kim D.Y, Kim H.J, Kim J.B, Kim J.H, Kim K.T, Kinoshita K, Ko B.R, Kody? P, Korpar S, Kri?an P, Krokovny P, Kuzmin A, Kwon Y.-J, Lange J.S, Li J, Li Y, Li Gioi L, Libby J, Liventsev D, Lukin P, Miyabayashi K, Miyata H, Moll A, Mussa R, Nakano E, Nakao M, Nanut T, Nisar N.K, Nishida S, Okuno S, Ostrowicz W, Park C.W, Park H, Pedlar T.K, Pestotnik R, Petri? M, Piilonen L.E, Ribe?l E, Ritter M, Rostomyan A, Sakai Y, Sandilya S, Santelj L, Sanuki T, Schneider O, Schnell G, Schwanda C, Semmler D, Senyo K, Shebalin V, Shibata T.-A, Shiu J.-G, Shwartz B, Sibidanov A, Simon F, Sohn Y.-S, Sokolov A, Stari? M, Steder M, Sumiyoshi T, Tamponi U, Tanida K, Tatishvili G, Teramoto Y, Uchida M, Uehara S, Uglov T, Unno Y, Uno S, Urquijo P, Usov Y, Vahsen S.E, Van Hulse C, Vanhoefer P, Varner G, Vinokurova A, Vorobyev V, Vossen A, Wagner M.N, Wang C.H, Wang M.-Z, Wang P, Wang X.L, Watanabe M, Watanabe Y, Won E, Yamaoka J, Yashchenko S, Yook Y, Yuan C.Z, Zhang Z.P, Zhilich V, Zhulanov V

    Physical Review D - Particles, Fields, Gravitation and Cosmology   90 ( 11 )   2014年12月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.1103/PhysRevD.90.112008

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    その他リンク: http://orcid.org/0000-0002-1018-219X

  • Observation of a new charged charmoniumlike state in B-0 -&gt; J/psi K- pi(+) decays 査読

    K. Chilikin, R. Mizuk, I. Adachi, H. Aihara, S. Al Said, K. Arinstein, D. M. Asner, V. Aulchenko, T. Aushev, R. Ayad, T. Aziz, A. M. Bakich, V. Bansal, A. Bondar, G. Bonvicini, A. Bozek, M. Bracko, T. E. Browder, D. Cervenkov, V. Chekelian, A. Chen, B. G. Cheon, R. Chistov, K. Cho, V. Chobanova, S. -K. Choi, Y. Choi, D. Cinabro, M. Danilov, Z. Dolezal, Z. Drasal, A. Drutskoy, K. Dutta, S. Eidelman, D. Epifanov, H. Farhat, J. E. Fast, T. Ferber, O. Frost, V. Gaur, N. Gabyshev, S. Ganguly, A. Garmash, R. Gillard, Y. M. Goh, B. Golob, O. Grzymkowska, J. Haba, T. Hara, K. Hayasaka, H. Hayashii, X. H. He, W. -S. Hou, M. Huschle, H. J. Hyun, A. Ishikawa, R. Itoh, Y. Iwasaki, I. Jaegle, K. K. Joo, T. Julius, T. Kawasaki, C. Kiesling, D. Y. Kim, H. J. Kim, J. H. Kim, M. J. Kim, Y. J. Kim, K. Kinoshita, B. R. Ko, S. Korpar, P. Krizan, P. Krokovny, T. Kuhr, A. Kuzmin, Y. -J. Kwon, J. S. Lange, Y. Li, L. Li Gioi, J. Libby, Y. Liu, D. Liventsev, P. Lukin, K. Miyabayashi, H. Miyata, G. B. Mohanty, A. Moll, T. Mori, R. Mussa, E. Nakano, M. Nakao, T. Nanut, Z. Natkaniec, E. Nedelkovska, N. K. Nisar, S. Nishida, S. Ogawa, S. Okuno, S. L. Olsen, P. Pakhlov, G. Pakhlova, C. W. Park, H. Park, T. K. Pedlar, M. Petric, L. E. Piilonen, E. Ribezl, M. Ritter, A. Rostomyan, Y. Sakai, S. Sandilya, L. Santelj, T. Sanuki, Y. Sato, V. Savinov, O. Schneider, G. Schnell, C. Schwanda, O. Seon, V. Shebalin, C. P. Shen, T. -A. Shibata, J. -G. Shiu, B. Shwartz, A. Sibidanov, F. Simon, Y. -S. Sohn, A. Sokolov, E. Solovieva, M. Staric, M. Steder, K. Sumisawa, T. Sumiyoshi, U. Tamponi, K. Tanida, G. Tatishvili, Y. Teramoto, F. Thorne, K. Trabelsi, M. Uchida, S. Uehara, T. Uglov, Y. Unno, S. Uno, P. Urquijo, C. Van Hulse, P. Vanhoefer, G. Varner, A. Vinokurova, M. N. Wagner, C. H. Wang, M. -Z. Wang, P. Wang, X. L. Wang, Y. Watanabe, S. Wehle, K. M. Williams, E. Won, J. Yamaoka, S. Yashchenko, Z. P. Zhang, V. Zhilich, V. Zhulanov, A. Zupanc

    PHYSICAL REVIEW D   90 ( 11 )   112009-1 - 112009-14   2014年12月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We present the results of an amplitude analysis of B-0 --&gt; J/psi K- pi(+) decays. A new charged charmoniumlike state Z(c)(4200)(+) decaying to J/psi pi(+) is observed with a significance of 6.2 sigma. The mass and width of the Z(c)(4200)(+) are 4196(-29-13)(+31+17) MeV/c(2) and 370(-70-132)(+70+70) MeV, respectively; the preferred assignment of the quantum numbers is J(P) = 1(+). In addition, we find evidence for Z(c)(4430)(+) --&gt; J/psi pi(+). The analysis is based on a 711 fb(-1) data sample collected by the Belle detector at the asymmetric-energy e(+)e(-) collider KEKB.

    DOI: 10.1103/PhysRevD.90.112009

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  • Measurement of the inclusive semileptonic branching fraction B(B-s(0) -&gt; X(-)l(+)nu(l)) at Belle (vol 87, 072008, 2013) 査読

    C. Oswald, P. Urquijo, J. Dingfelder, I. Adachi, H. Aihara, K. Arinstein, D. M. Asner, T. Aushev, A. M. Bakich, K. Belous, V. Bhardwaj, B. Bhuyan, A. Bondar, G. Bonvicini, A. Bozek, M. Bracko, T. E. Browder, P. Chang, V. Chekelian, A. Chen, P. Chen, B. G. Cheon, K. Chilikin, R. Chistov, K. Cho, V. Chobanova, S. -K. Choi, Y. Choi, D. Cinabro, J. Dalseno, Z. Dolezal, Z. Drasal, A. Drutskoy, D. Dutta, S. Eidelman, S. Esen, H. Farhat, J. E. Fast, V. Gaur, N. Gabyshev, S. Ganguly, R. Gillard, Y. M. Goh, B. Golob, J. Haba, K. Hayasaka, H. Hayashii, Y. Horii, Y. Hoshi, W. -S. Hou, H. J. Hyun, T. Iijima, A. Ishikawa, R. Itoh, Y. Iwasaki, D. H. Kah, J. H. Kang, E. Kato, T. Kawasaki, C. Kiesling, H. J. Kim, H. O. Kim, J. B. Kim, K. T. Kim, M. J. Kim, Y. J. Kim, K. Kinoshita, J. Klucar, B. R. Ko, S. Korpar, R. T. Kouzes, P. Krizan, P. Krokovny, B. Kronenbitter, T. Kuhr, T. Kumita, Y. -J. Kwon, S. -H. Lee, J. Li, Y. Li, J. Libby, C. Liu, Y. Liu, Z. Q. Liu, D. Liventsev, R. Louvot, O. Lutz, D. Matvienko, K. Miyabayashi, H. Miyata, R. Mizuk, G. B. Mohanty, A. Moll, N. Muramatsu, Y. Nagasaka, E. Nakano, M. Nakao, E. Nedelkovska, N. K. Nisar, S. Nishida, O. Nitoh, T. Nozaki, S. Ogawa, T. Ohshima, S. Okuno, S. L. Olsen, W. Ostrowicz, P. Pakhlov, G. Pakhlova, H. Park, H. K. Park, T. K. Pedlar, R. Pestotnik, M. Petric, L. E. Piilonen, M. Prim, K. Prothmann, M. Ritter, M. Roehrken, M. Rozanska, S. Ryu, H. Sahoo, T. Saito, Y. Sakai, S. Sandilya, L. Santelj, T. Sanuki, Y. Sato, O. Schneider, G. Schnell, C. Schwanda, A. J. Schwartz, K. Senyo, O. Seon, M. E. Sevior, M. Shapkin, C. P. Shen, T. -A. Shibata, J. -G. Shiu, B. Shwartz, A. Sibidanov, F. Simon, P. Smerkol, Y. -S. Sohn, A. Sokolov, E. Solovieva, M. Staric, T. Sumiyoshi, G. Tatishvili, Y. Teramoto, K. Trabelsi, T. Tsuboyama, M. Uchida, S. Uehara, T. Uglov, Y. Unno, S. Uno, C. Van Hulse, P. Vanhoefer, G. Varner, K. E. Varvell, C. H. Wang, M. -Z. Wang, P. Wang, M. Watanabe, Y. Watanabe, K. M. Williams, E. Won, H. Yamamoto, Y. Yamashita, C. C. Zhang, Z. P. Zhang, V. Zhilich, A. Zupanc

    PHYSICAL REVIEW D   90 ( 11 )   119901   2014年12月

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    記述言語:英語   出版者・発行元:AMER PHYSICAL SOC  

    DOI: 10.1103/PhysRevD.90.119901

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  • HFAG tau lepton averages 査読

    Alberto Lusiani, Kiyoshi Hayasaka, Hisaki Hayashii, J. Michael Roney, Boris Shwartz, Swagato Banerjee

    Nuclear Physics B - Proceedings Supplements   253-255   47 - 51   2014年10月

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    掲載種別:研究論文(国際会議プロシーディングス)  

    © 2014 Elsevier B.V. The HFAG-Tau group has computed the world averages of the tau lepton properties using the experimental results available in early 2012. The tau lepton branching fractions, mass and lifetime are used to test lepton universality for charged weak currents and to compute |Vus|. For the first time, all |Vus| measurements based primarily on tau data have been combined in a single measurement. Searches for lepton flavor violating decays of the tau lepton are also summarized.

    DOI: 10.1016/j.nuclphysbps.2014.09.012

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  • Observation of the decay B-0 -&gt; eta ' K* (892)(0) 査読

    S. Sato, Y. Yusa, G. B. Mohanty, A. Abdesselam, I. Adachi, H. Aihara, S. Al Said, D. M. Asner, T. Aushev, R. Ayad, S. Bahinipati, A. M. Bakich, V. Bansal, V. Bhardwaj, B. Bhuyan, G. Bonvicini, A. Bozek, M. Bracko, T. E. Browder, D. Cervenkov, P. Chang, V. Chekelian, A. Chen, B. G. Cheon, K. Chilikin, K. Cho, V. Chobanova, Y. Choi, D. Cinabro, J. Dalseno, M. Danilov, Z. Dolezal, Z. Drasal, A. Drutskoy, S. Eidelman, H. Farhat, J. E. Fast, T. Ferber, O. Frost, V. Gaur, S. Ganguly, A. Garmash, R. Gillard, R. Glattauer, Y. M. Goh, B. Golob, O. Grzymkowska, K. Hayasaka, H. Hayashii, X. H. He, T. Higuchi, W. -S. Hou, M. Huschle, T. Iijima, K. Inami, A. Ishikawa, R. Itoh, Y. Iwasaki, I. Jaegle, K. K. Joo, T. Julius, E. Kato, T. Kawasaki, D. Y. Kim, J. B. Kim, J. H. Kim, K. T. Kim, M. J. Kim, Y. J. Kim, K. Kinoshita, J. Klucar, B. R. Ko, P. Kodys, S. Korpar, P. Krizan, P. Krokovny, T. Kuhr, T. Kumita, Y. -J. Kwon, J. Li, Y. Li, J. Libby, D. Liventsev, D. Matvienko, K. Miyabayashi, H. Miyata, R. Mizuk, A. Moll, E. Nakano, M. Nakao, T. Nanut, Z. Natkaniec, E. Nedelkovska, N. K. Nisar, S. Nishida, S. Ogawa, S. Okuno, P. Pakhlov, G. Pakhlova, H. Park, T. K. Pedlar, M. Petric, L. E. Piilonen, M. Ritter, A. Rostomyan, Y. Sakai, S. Sandilya, L. Santelj, T. Sanuki, Y. Sato, V. Savinov, O. Schneider, G. Schnell, C. Schwanda, A. J. Schwartz, D. Semmler, K. Senyo, O. Seon, M. E. Sevior, V. Shebalin, C. P. Shen, T. -A. Shibata, J. -G. Shiu, B. Shwartz, A. Sibidanov, F. Simon, Y. -S. Sohn, A. Sokolov, E. Solovieva, M. Staric, M. Steder, J. Stypula, M. Sumihama, U. Tamponi, G. Tatishvili, Y. Teramoto, F. Thorne, K. Trabelsi, M. Uchida, S. Uehara, T. Uglov, Y. Unno, S. Uno, C. Van Hulse, P. Vanhoefer, G. Varner, V. Vorobyev, M. N. Wagner, C. H. Wang, M. -Z. Wang, P. Wang, X. L. Wang, M. Watanabe, Y. Watanabe, S. Wehle, K. M. Williams, E. Won, S. Yashchenko, Y. Yook, Z. P. Zhang, V. Zhilich, V. Zhulanov, A. Zupanc

    PHYSICAL REVIEW D   90 ( 7 )   072009-1 - 072009-7   2014年10月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We report a search for charmless hadronic decays of neutral B mesons to eta ' K* (892)(0). The results are based on a 711 fb(-1) data sample that contains 772 x 10(6) B (B) over bar pairs, collected at the gamma(4S) resonance with the Belle detector at the KEKB asymmetric energy e(+)e(-) collider. We observe the decay for the first time with a significance of 5.0 standard deviations and obtain its branching fraction B[B-0 -&gt; eta ' K* (892)(0)] = [2.6 +/- 0.7(stat) +/- 0.2(syst)] x 10(-6). We also measure the CP-violating asymmetry as A(CP) [B-0 -&gt; eta ' K* (892)(0)] = -0.22 +/- 0.29(stat) +/- 0.07(syst).

    DOI: 10.1103/PhysRevD.90.072009

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  • Measurement of time-dependent CP violation in B-0 - eta ' K-0 decays 査読

    L. Santelj, Y. Yusa, A. Abdesselam, I. Adachi, H. Aihara, S. Al Said, D. M. Asner, V. Aulchenko, T. Aushev, R. Ayad, S. Bahinipati, A. M. Bakich, V. Bansalu, V. Bhardwaj, B. Bhuyan, A. Bondar, G. Bonvicini, A. Bozek, M. Bracko, T. E. Browder, D. T. Cervenkov, V. Chekelian, A. Chen, B. G. Cheon, K. Chilikin, K. Cho, V. Chobanova, Y. Choi, D. Cinabro, J. Dalseno, M. Danilov, Z. Dolezal, Z. Drasal, A. Drutskoy, S. Eidelman, H. Farhat, J. E. Fast, T. Ferber, O. Frost, V. Gaur, N. Gabyshev, S. Ganguly, A. Garmash, R. Gillard, R. Glattauer, Y. M. Goh, B. Golob, J. Haba, K. Hara, K. Hayasaka, H. Hayashii, X. H. He, T. Higuchi, W. -S. Hou, H. J. Hyun, K. Inami, A. Ishikawa, R. Itoh, Y. Iwasaki, I. Jaegle, K. K. Joo, H. Kakuno, E. Kato, T. Kawasaki, C. Kiesling, D. Y. Kim, H. J. Kim, J. B. Kim, J. H. Kim, K. T. Kim, M. J. Kim, Y. J. Kim, K. Kinoshita, B. R. Ko, S. Korpar, P. Krizan, P. Krokovny, T. Kuhr, T. Kumita, A. Kuzmin, Y. -J. Kwon, J. Li, Y. Li, L. Li Gioi, J. Libby, D. Liventsev, D. Matvienko, K. Miyabayashi, H. Miyata, G. B. Mohanty, A. Moll, T. Mori, E. Nakano, M. Nakao, T. Nanut, Z. Natkaniec, E. Nedelkovska, N. K. Nisar, S. Nishida, S. Ogawa, S. Okuno, S. L. Olsen, P. Pakhlov, G. Pakhlova, H. Park, T. K. Pedlar, R. Pestotnik, M. Petric, L. E. Piilonen, E. Ribezl, M. Rutter, A. Rostomyan, Y. Sakai, S. Sandilya, T. Sanuki, Y. Sato, V. Savinov, V. Savinov, O. Schneider, G. Schnell, C. Schwanda, A. J. Schwartz, K. Senyo, M. E. Sevior, V. Shebalin, C. P. Shen, T. -A. Shibata, J. -G. Shiu, F. Simon, Y. -S. Sohn, A. Sokolov, E. Solovieva, M. Staric, M. Steder, M. Sumihama, U. Tamponi, G. Tatishvili, Y. Teramoto, K. Trabelsi, M. Uchida, S. Uehara, T. Uglov, Y. Unno, S. Uno, P. Urquijo, S. E. Vahsen, C. Van Hulse, P. Vanhoefer, G. Varner, V. Vorobyev, A. Vossen, M. N. Wagner, C. H. Wang, M. -Z. Wang, P. Wang, X. L. Wang, Y. Watanabe, S. Wehle, K. M. Williams, E. Won, S. Yashchenko, Y. Yook, Z. P. Zhang, V. Zhilich, V. Zhulanov, A. Zupanc

    JOURNAL OF HIGH ENERGY PHYSICS   ( 10 )   165   2014年10月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:SPRINGER  

    We present a measurement of the time-dependent CP violation parameters in B0 -&gt; eta'K-0 decays. The measurement is based on the full data sample containing 772 x 10(6) B (B) over bar pairs collected at the Upsilon(4S) resonance using the Belle detector at the KEKB asymmetric-energy e+e- collider. The measured values of the mixing-induced and direct CP violation parameters are:
    sin 2 phi(eff)(1) = +0.68 +/- 0.07 +/- 0.03,
    A(eta'K0) = +0.03 +/- 0.05 +/- 0.04,
    where the first uncertainty is statistical arid the second is systernatic. The values obtained are the most accurate to date. lurthierrimore. these results are consistent with our previous measurements and with the world-average value of sin 2 phi(1) measured in B-0 -&gt; J/psi K-0 decays.

    DOI: 10.1007/JHEP10(2014)165

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  • Observation of e(+)e(-) -&gt; pi(+)pi(-) pi(0)chi(bJ) and Search for X-b -&gt; omega Upsilon(1S) at root s=10.867 GeV 査読

    X. H. He, C. P. Shen, C. Z. Yuan, Y. Ban, A. Abdesselam, I. Adachi, H. Aihara, D. M. Asner, V. Aulchenko, T. Aushev, R. Ayad, S. Bahinipati, A. M. Bakich, V. Bansal, B. Bhuyan, A. Bondar, G. Bonvicini, A. Bozek, M. Bracko, T. E. Browder, D. Cervenkov, P. Chang, V. Chekelian, A. Chen, B. G. Cheon, K. Chilikin, R. Chistov, K. Cho, V. Chobanova, S. -K. Choi, Y. Choi, D. Cinabro, J. Dalseno, M. Danilov, Z. Dolezal, Z. Drasal, A. Drutskoy, S. Eidelman, H. Farhat, J. E. Fast, T. Ferber, V. Gaur, N. Gabyshev, S. Ganguly, A. Garmash, R. Gillard, R. Glattauer, Y. M. Goh, O. Grzymkowska, J. Haba, K. Hayasaka, H. Hayashii, W. -S. Hou, T. Iijima, A. Ishikawa, R. Itoh, Y. Iwasaki, I. Jaegle, K. K. Joo, T. Julius, E. Kato, T. Kawasaki, D. Y. Kim, M. J. Kim, Y. J. Kim, K. Kinoshita, B. R. Ko, P. Kodys, S. Korpar, P. Krizan, P. Krokovny, T. Kumita, A. Kuzmin, Y. -J. Kwon, J. S. Lange, Y. Li, J. Libby, D. Liventsev, D. Matvienko, K. Miyabayashi, H. Miyata, R. Mizuk, G. B. Mohanty, A. Moll, R. Mussa, E. Nakano, M. Nakao, H. Nakazawa, T. Nanut, Z. Natkaniec, E. Nedelkovska, N. K. Nisar, S. Nishida, S. Ogawa, S. Okuno, P. Pakhlov, G. Pakhlova, H. Park, T. K. Pedlar, R. Pestotnik, M. Petric, L. E. Piilonen, M. Ritter, A. Rostomyan, Y. Sakai, S. Sandilya, L. Santelj, T. Sanuki, Y. Sato, V. Savinov, O. Schneider, G. Schnell, C. Schwanda, D. Semmler, K. Senyo, M. E. Sevior, V. Shebalin, T. -A. Shibata, J. -G. Shiu, B. Shwartz, A. Sibidanov, F. Simon, Y. -S. Sohn, A. Sokolov, E. Solovieva, M. Staric, M. Steder, K. Sumisawa, T. Sumiyoshi, U. Tamponi, K. Tanida, G. Tatishvili, Y. Teramoto, F. Thorne, K. Trabelsi, M. Uchida, S. Uehara, T. Uglov, Y. Unno, S. Uno, P. Urquijo, S. E. Vahsen, C. Van Hulse, P. Vanhoefer, G. Varner, A. Vinokurova, V. Vorobyev, M. N. Wagner, C. H. Wang, M. -Z. Wang, P. Wang, X. L. Wang, M. Watanabe, Y. Watanabe, S. Wehle, K. M. Williams, E. Won, J. Yamaoka, S. Yashchenko, Y. Yook, Y. Yusa, Z. P. Zhang, V. Zhilich, V. Zhulanov, A. Zupanc

    PHYSICAL REVIEW LETTERS   113 ( 14 )   142001-1 - 142001-7   2014年9月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    The e(+)e(-) -&gt; pi(+)pi(-) pi(0)chi(bj) ( J = 0, 1, 2) processes are studied using a 118 fb(-1) data sample acquired with the Belle detector at a center-of-mass energy of 10.867 GeV. Unambiguous pi(+)pi(-) pi(0)chi(bj) ( J = 1, 2), omega chi(b1) signals are observed, and indication for omega chi(b2) is seen, both for the first time, and the corresponding cross section measurements are presented. No significant pi(+)pi(-) pi(0)chi(b0) or omega chi(b0) signals are observed, and 90% confidence level upper limits on the cross sections for these two processes are obtained. In the pi(+)pi(-) pi(0) invariant mass spectrum, significant non-omega signals are also observed. We search for the X(3872)-like state (named X-b) decaying into omega Upsilon(1S); no significant signal is observed with a mass between 10.55 and 10.65 GeV= c(2).

    DOI: 10.1103/PhysRevLett.113.142001

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  • Measurement of branching fractions and CP violation parameters in B -&gt; omega K decays with first evidence of CP violation in B-0 -&gt; omega K-s(0) 査読

    V. Chobanova, J. Dalseno, C. Kiesling, I. Adachi, H. Aihara, D. M. Asner, V. Aulchenko, T. Aushev, T. Aziz, A. M. Bakich, A. Bala, Y. Ban, K. Belous, B. Bhuyan, A. Bobrov, G. Bonvicini, A. Bozek, M. Bracko, T. E. Browder, D. Cervenkov, V. Chekelian, A. Chen, B. G. Cheon, K. Chilikin, R. Chistov, K. Cho, Y. Choi, D. Cinabro, M. Danilov, Z. Dolezal, Z. Drasal, D. Dutta, K. Dutta, S. Eidelman, S. Esen, H. Farhat, J. E. Fast, T. Ferber, V. Gaur, N. Gabyshev, S. Ganguly, A. Garmash, R. Gillard, Y. M. Goh, B. Golob, J. Haba, K. Hayasaka, X. H. He, Y. Horii, Y. Hoshi, W. -S. Hou, Y. B. Hsiung, H. J. Hyun, T. Iijima, K. Inami, A. Ishikawa, Y. Iwasaki, T. Iwashita, I. Jaegle, T. Julius, J. H. Kang, E. Kato, H. Kawai, T. Kawasaki, D. Y. Kim, H. J. Kim, J. B. Kim, J. H. Kim, M. J. Kim, Y. J. Kim, K. Kinoshita, J. Klucar, B. R. Ko, P. Kodys, S. Korpar, P. Krokovny, B. Kronenbitter, T. Kuhr, T. Kumita, A. Kuzmin, J. S. Lange, S. -H. Lee, J. Li, Y. Li, L. Li Gioi, J. Libby, D. Liventsev, P. Lukin, D. Matvienko, K. Miyabayashi, H. Miyake, H. Miyata, R. Mizuk, G. B. Mohanty, A. Moll, N. Muramatsu, R. Mussa, E. Nakano, M. Nakao, Z. Natkaniec, M. Nayak, E. Nedelkovska, C. Ng, N. K. Nisar, S. Nishida, O. Nitoh, S. Ogawa, S. Okuno, P. Pakhlov, G. Pakhlova, C. W. Park, H. Park, H. K. Park, T. K. Pedlar, T. Peng, S. Ogawa, S. Okuno, P. Pakhlov, G. Pakhlova, C. W. Park, H. Park, H. K. Park, T. K. Pedlar, T. Peng, R. Pestotnik, M. Petric, L. E. Piilonen, M. Ritter, M. Roehrken, A. Rostomyan, H. Sahoo, T. Saito, Y. Sakai, L. Santelj, T. Sanuki, V. Savinov, O. Schneider, A. J. Schwartz, D. Semmler, K. Senyo, O. Seon, M. E. Sevior, M. Shapkin, T. -A. Shibata, J. -G. Shiu, B. Shwartz, A. Sibidanov, F. Simon, Y. -S. Sohn, S. Stanic, M. Staric, M. Steder, K. Sumisawa, T. Sumiyoshi, U. Tamponi, G. Tatishvili, Y. Teramoto, K. Trabelsi, M. Uchida, T. Uglov, Y. Unno, S. Uno, C. Van Hulse, P. Vanhoefer, G. Varner, K. E. Varvell, A. Vinokurova, V. Vorobyev, M. N. Wagner, C. H. Wang, M. -Z. Wang, P. Wang, M. Watanabe, Y. Watanabe, K. M. Williams, E. Won, H. Yamamoto, Y. Yamashita, S. Yashchenko, Z. P. Zhang, V. Zhilich, V. Zhulanov, A. Zupanc

    PHYSICAL REVIEW D   90 ( 1 )   012002-1 - 012002-16   2014年7月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We present a measurement of the branching fractions and charge- parity-( CP-) violating parameters in B..K decays. The results are obtained from the final data sample containing 772 x 10(6) BB _ pairs collected at the.d4S_ resonance with the Belle detector at the KEKB asymmetric- energy e_e- collider. We obtain the branching fractions BdB0 0 _d4.5 0.4dstat_ 0.3dsyst_x10- 6; BdB_..K__ d6.80.4dstat_ 0.4dsyst__x10- 6 which are in agreement with their respective current world averages. For the CP- violating parameters, we obtain A.K0 S - 0.36 +/- 0.19dstat_ 0.05dsyst_; S.K0 S _0.91 0.32dstat_ 0.05dsyst_; A.K_ - 0.03 +/- 0.04dstat_ 0.01dsyst_; where A and S represent the direct and mixing- induced CP asymmetry, respectively. We find no evidence of CP violation in the decay channel B_..K_; however, we obtain the first evidence of CP violation in the B0..K0 S decay channel at the level of 3.1 standard deviations.

    DOI: 10.1103/PhysRevD.90.012002

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  • Measurement of the Branching Fraction B(Lambda(+)(c) -&gt; pK(-)pi(+)) 査読

    A. Zupanc, C. Bartel, N. Gabyshev, I. Adachi, H. Aihara, D. M. Asner, V. Aulchenko, T. Aushev, A. M. Bakich, A. Bala, K. Belous, B. Bhuyan, A. Bondar, G. Bonvicini, A. Bozek, M. Bracko, T. E. Browder, D. Cervenkov, M. -C. Chang, V. Chekelian, B. G. Cheon, K. Chilikin, R. Chistov, I. -S. Cho, K. Cho, V. Chobanova, S. -K. Choi, Y. Choi, D. Cinabro, J. Dalseno, M. Danilov, Z. Dolezal, Z. Drasal, D. Dutta, K. Dutta, S. Eidelman, D. Epifanov, H. Farhat, J. E. Fast, M. Feindt, T. Ferber, V. Gaur, S. Ganguly, A. Garmash, R. Gillard, R. Glattauer, Y. M. Goh, B. Golob, J. Haba, K. Hayasaka, H. Hayashii, X. H. He, Y. Hoshi, W. -S. Hou, M. Huschle, H. J. Hyun, T. Iijima, A. Ishikawa, R. Itoh, Y. Iwasaki, T. Iwashita, I. Jaegle, T. Julius, J. H. Kang, E. Kato, Y. Kato, T. Kawasaki, H. Kichimi, D. Y. Kim, H. J. Kim, J. B. Kim, J. H. Kim, M. J. Kim, Y. J. Kim, K. Kinoshita, J. Klucar, B. R. Ko, P. Kodys, S. Korpar, P. Krizan, P. Krokovny, B. Kronenbitter, T. Kuhr, T. Kumita, A. Kuzmin, Y. -J. Kwon, S. -H. Lee, J. Li, Y. Li, J. Libby, C. Liu, Y. Liu, Z. Q. Liu, D. Liventsev, J. MacNaughton, K. Miyabayashi, H. Miyata, R. Mizuk, G. B. Mohanty, A. Moll, R. Mussa, E. Nakano, M. Nakao, H. Nakazawa, Z. Natkaniec, M. Nayak, E. Nedelkovska, M. Niiyama, N. K. Nisar, S. Nishida, O. Nitoh, S. Ogawa, S. L. Olsen, W. Ostrowicz, P. Pakhlov, G. Pakhlova, C. W. Park, H. Park, H. K. Park, T. K. Pedlar, R. Pestotnik, M. Petric, L. E. Piilonen, M. Ritter, M. Roehrken, A. Rostomyan, S. Ryu, H. Sahoo, T. Saito, Y. Sakai, S. Sandilya, L. Santelj, T. Sanuki, V. Savinov, O. Schneider, G. Schnell, C. Schwanda, D. Semmler, K. Senyo, O. Seon, M. E. Sevior, M. Shapkin, C. P. Shen, T. -A. Shibata, J. -G. Shiu, B. Shwartz, A. Sibidanov, F. Simon, Y. -S. Sohn, A. Sokolov, E. Solovieva, S. Stanic, M. Staric, M. Steder, T. Sumiyoshi, U. Tamponi, K. Tanida, G. Tatishvili, Y. Teramoto, K. Trabelsi, M. Uchida, S. Uehara, Y. Unno, S. Uno, P. Urquijo, Y. Usov, C. Van Hulse, P. Vanhoefer, G. Varner, K. E. Varvell, A. Vinokurova, V. Vorobyev, M. N. Wagner, C. H. Wang, P. Wang, X. L. Wang, M. Watanabe, Y. Watanabe, K. M. Williams, E. Won, H. Yamamoto, Y. Yamashita, S. Yashchenko, Y. Yook, Z. P. Zhang, V. Zhilich, V. Zhulanov

    PHYSICAL REVIEW LETTERS   113 ( 4 )   042002-1 - 042002-7   2014年7月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We present the first model-independent measurement of the absolute branching fraction of the Lambda(+)(c) -&gt; pK(-)pi(+)decay using a data sample of 978 fb(-1) collected with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. The number of Lambda(+)(c) baryons is determined by reconstructing the recoiling D(*)(-)(p) over bar pi(+)system in events of the type e(+)e(-) -&gt; D(*)(-)(p) over bar pi(+)Lambda(+)(c). The branching fraction is measured to be B(Lambda(+)(c) -&gt; pK(-)pi(+)) = (6.84 +/- 0.24(-0.27)(+0.21))%, where the first and second uncertainties are statistical and systematic, respectively.

    DOI: 10.1103/PhysRevLett.113.042002

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  • Study of B-0 -&gt; rho(0)rho(0) decays, implications for the CKM angle phi(2) and search for other B-0 decay modes with a four-pion final state (vol 89, 072008, 2014) 査読

    P. Vanhoefer, J. Dalseno, C. Kiesling, I. Adachi, H. Aihara, D. M. Asner, V. Aulchenko, T. Aushev, A. M. Bakich, A. Bala, V. Bhardwaj, B. Bhuyan, G. Bonvicini, A. Bozek, M. Bracko, T. E. Browder, M. -C. Chang, P. Chang, V. Chekelian, A. Chen, P. Chen, B. G. Cheon, K. Chilikin, R. Chistov, K. Cho, V. Chobanova, Y. Choi, D. Cinabro, Z. Dolezal, Z. Drasal, S. Eidelman, H. Farhat, J. E. Fast, T. Ferber, V. Gaur, N. Gabyshev, S. Ganguly, A. Garmash, R. Gillard, Y. M. Goh, B. Golob, T. Hara, K. Hayasaka, H. Hayashii, T. Higuchi, Y. Horii, Y. Hoshi, W. -S. Hou, H. J. Hyun, T. Iijima, A. Ishikawa, R. Itoh, Y. Iwasaki, T. Iwashita, I. Jaegle, T. Julius, D. H. Kah, E. Kato, H. Kawai, T. Kawasaki, D. Y. Kim, H. O. Kim, J. B. Kim, J. H. Kim, M. J. Kim, Y. J. Kim, K. Kinoshita, J. Klucar, B. R. Ko, S. Korpar, P. Krizan, P. Krokovny, B. Kronenbitter, T. Kuhr, T. Kumita, A. Kuzmin, Y. -J. Kwon, J. S. Lange, S. -H. Lee, J. Li, L. Li Gioi, J. Libby, C. Liu, Y. Liu, D. Liventsev, P. Lukin, K. Miyabayashi, H. Miyata, R. Mizuk, G. B. Mohanty, A. Moll, H. -G. Moser, R. Mussa, E. Nakano, M. Nakao, Z. Natkaniec, E. Nedelkovska, N. K. Nisar, S. Nishida, O. Nitoh, S. Ogawa, P. Pakhlov, G. Pakhlova, C. W. Park, H. Park, H. K. Park, T. K. Pedlar, R. Pestotnik, M. Petric, L. E. Piilonen, M. Ritter, M. Roehrken, A. Rostomyan, S. Ryu, H. Sahoo, T. Saito, Y. Sakai, S. Sandilya, L. Santelj, T. Sanuki, Y. Sato, V. Savinov, O. Schneider, G. Schnell, C. Schwanda, A. J. Schwartz, D. Semmler, K. Senyo, O. Seon, M. E. Sevior, M. Shapkin, C. P. Shen, T. -A. Shibata, J. -G. Shiu, B. Shwartz, A. Sibidanov, F. Simon, Y. -S. Sohn, A. Sokolov, E. Solovieva, M. Staric, M. Steder, T. Sumiyoshi, U. Tamponi, G. Tatishvili, Y. Teramoto, K. Trabelsi, T. Tsuboyama, M. Uchida, S. Uehara, Y. Unno, S. Uno, S. E. Vahsen, C. Van Hulse, G. Varner, K. E. Varvell, A. Vinokurova, V. Vorobyev, M. N. Wagner, C. H. Wang, M. -Z. Wang, P. Wang, X. L. Wang, Y. Watanabe, K. M. Williams, E. Won, Y. Yamashita, S. Yashchenko, Y. Yook, Z. P. Zhang, V. Zhilich, V. Zhulanov, A. Zupanc

    PHYSICAL REVIEW D   89 ( 11 )   119903   2014年6月

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    記述言語:英語   出版者・発行元:AMER PHYSICAL SOC  

    DOI: 10.1103/PhysRevD.89.119903

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  • Measurement of ${D}^{0}\text{ { - } }{\overline{D } }^{0}$ mixing and search for indirect $CP$ violation using ${D}^{0}{\rightarrow}{K}_{S}^{0}{ { \pi } }^{+}{ { \pi } }^{ { - } }$ decays 査読

    The Belle collaboration, K, Hayasaka は

    Phys. Rev. D   89 ( 9 )   091103-1 - 091103-8   2014年5月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.1103/PhysRevD.89.091103

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  • Measurement of branching fractions for B → J/ψηK decays and search for a narrow resonance in the J/ψη final state 査読

    Iwashita T, Miyabayashi K, Bhardwaj V, Adachi I, Aihara H, Asner D.M, Aushev T, Bakich A.M, Bala A, Bhuyan B, Bonvicini G, Bozek A, Bra?ko M, Browder T.E, Chang M.-C, Chen A, Cheon B.G, Chilikin K, Chistov R, Cho K, Chobanova V, Choi S.-K, Choi Y, Cinabro D, Dalseno J, Danilov M, Dole?al Z, Dr{\'a}sal Z, Dutta D, Eidelman S, Esen S, Farhat H, Fast J.E, Feindt M, Ferber T, Frey A, Gaur V, Gabyshev N, Ganguly S, Gillard R, Goh Y.M, Golob B, Haba J, Hara T, Hayasaka K, Hayashii H, Higuchi T, Horii Y, Hoshi Y, Hou W.-S, Hyun H.J, Iijima T, Ishikawa A, Itoh R, Iwasaki Y, Jaegle I, Julius T, Kah D.H, Kang J.H, Kato E, Kawasaki T, Kichimi H, Kiesling C, Kim D.Y, Kim H.J, Kim H.O, Kim J.B, Kim J.H, Kim M.J, Kim Y.J, Kinoshita K, Klucar J, Ko B.R, Kody?s P, Korpar S, Kri?an P, Krokovny P, Kuhr T, Kumita T, Kuzmin A, Kwon Y.-J, Lange J.S, Lee S.-H, Li Y, Libby J, Liu C, Liu Y, Lukin P, Matvienko D, Miyata H, Mizuk R, Moll A, Mori T, Nagasaka Y, Nakano E, Nakao M, Nakazawa H, Natkaniec Z, Nayak M, Ng C, Nisar N.K, Nishida S, Nitoh O, Ogawa S, Okuno S, Pakhlova G, Panzenb{\"o}ck E, Park H, Park H.K, Pedlar T.K, Pestotnik R, Petri? M, Piilonen L.E, Ritter M, R{\"o}hrken M, Rostomyan A, Ryu S, Sahoo H, Saito T, Sakai K, Sakai Y, Sandilya S, Santel D, Santelj L, Sanuki T, Savinov V, Schneider O, Schnell G, Schwanda C, Semmler D, Senyo K, Seon O, Sevior M.E, Shapkin M, Shen C.P, Shibata T.-A, Shiu J.-G, Shwartz B, Sibidanov A, Simon F, Sohn Y.-S, Sokolov A, Solovieva E, Stani? S, Stari? M, Steder M, Sumiyoshi T, Tamponi U, Tanida K, Tatishvili G, Teramoto Y, Trabelsi K, Tsuboyama T, Uchida M, Uehara S, Unno Y, Uno S, Urquijo P, Vanhoefer P, Varner G, Varvell K.E, Vorobyev V, Vossen A, Wagner M.N, Wang C.H, Wang M.-Z, Wang P, Wang X.L, Watanabe M, Watanabe Y, Williams K.M, Won E, Yabsley B.D, Yamashita Y, Yashchenko S, Yook Y, Yuan C.Z, Zhang Z.P, Zhilich V, Zupanc A

    Progress of Theoretical and Experimental Physics   2014 ( 4 )   2014年4月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.1093/ptep/ptu043

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    その他リンク: http://orcid.org/0000-0002-1018-219X

  • Study of B-0 -&gt; rho(0)rho(0) decays, implications for the CKM angle phi(2) and search for other B-0 decay modes with a four-pion final state 査読

    P. Vanhoefer, J. Dalseno, C. Kiesling, I. Adachi, H. Aihara, D. M. Asner, V. Aulchenko, T. Aushev, A. M. Bakich, A. Bala, V. Bhardwaj, B. Bhuyan, G. Bonvicini, A. Bozek, M. Bracko, T. E. Browder, M. -C. Chang, P. Chang, V. Chekelian, A. Chen, P. Chen, B. G. Cheon, K. Chilikin, R. Chistov, K. Cho, V. Chobanova, Y. Choi, D. Cinabro, Z. Dolezal, Z. Drasal, S. Eidelman, H. Farhat, J. E. Fast, T. Ferber, V. Gaur, N. Gabyshev, S. Ganguly, A. Garmash, R. Gillard, Y. M. Goh, B. Golob, T. Hara, K. Hayasaka, H. Hayashii, T. Higuchi, Y. Horii, Y. Hoshi, W. -S. Hou, H. J. Hyun, T. Iijima, A. Ishikawa, R. Itoh, Y. Iwasaki, T. Iwashita, I. Jaegle, T. Julius, D. H. Kah, E. Kato, H. Kawai, T. Kawasaki, D. Y. Kim, H. O. Kim, J. B. Kim, J. H. Kim, M. J. Kim, Y. J. Kim, K. Kinoshita, J. Klucar, B. R. Ko, S. Korpar, P. Krizan, P. Krokovny, B. Kronenbitter, T. Kuhr, T. Kumita, A. Kuzmin, Y. -J. Kwon, J. S. Lange, S. -H. Lee, J. Li, L. Li Gioi, J. Libby, C. Liu, Y. Liu, D. Liventsev, P. Lukin, K. Miyabayashi, H. Miyata, R. Mizuk, G. B. Mohanty, A. Moll, H. -G. Moser, R. Mussa, E. Nakano, M. Nakao, Z. Natkaniec, E. Nedelkovska, N. K. Nisar, S. Nishida, O. Nitoh, S. Ogawa, P. Pakhlov, G. Pakhlova, C. W. Park, H. Park, H. K. Park, T. K. Pedlar, R. Pestotnik, M. Petric, L. E. Piilonen, M. Ritter, M. Roehrken, A. Rostomyan, S. Ryu, H. Sahoo, T. Saito, Y. Sakai, S. Sandilya, L. Santelj, T. Sanuki, Y. Sato, V. Savinov, O. Schneider, G. Schnell, C. Schwanda, A. J. Schwartz, D. Semmler, K. Senyo, O. Seon, M. E. Sevior, M. Shapkin, C. P. Shen, T. -A. Shibata, J. -G. Shiu, B. Shwartz, A. Sibidanov, F. Simon, Y. -S. Sohn, A. Sokolov, E. Solovieva, M. Staric, M. Steder, T. Sumiyoshi, U. Tamponi, G. Tatishvili, Y. Teramoto, K. Trabelsi, T. Tsuboyama, M. Uchida, S. Uehara, Y. Unno, S. Uno, S. E. Vahsen, C. Van Hulse, G. Varner, K. E. Varvell, A. Vinokurova, V. Vorobyev, M. N. Wagner, C. H. Wang, M. -Z. Wang, P. Wang, X. L. Wang, Y. Watanabe, K. M. Williams, E. Won, Y. Yamashita, S. Yashchenko, Y. Yook, Z. P. Zhang, V. Zhilich, V. Zhulanov, A. Zupanc

    PHYSICAL REVIEW D   89 ( 7 )   072008-1 - 072008-16   2014年4月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We present a study of the branching fraction of the decay B-0 -&gt; rho(0)rho(0) and the fraction of longitudinally polarized rho(0) mesons in this decay. The results are obtained from the final data sample containing 772 x 10(6) B (B) over bar pairs collected at the gamma(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. We find 166 +/- 59 B-0 -&gt; rho(0)rho(0) events (including systematic uncertainties), corresponding to a branching fraction of B(B-0 -&gt; rho(0)rho(0)) = (1.02 +/- 0.30(stat) +/- 0.15(syst)) x 10(-6) with a significance of 3.4 standard deviations and a longitudinal polarization fraction f(L) = 0.21(-0.22)(+0.18()stat) +/- 0.15(syst). We use the longitudinal polarization fraction to determine the Cabibbo-Kobayashi-Maskawa matrix angle phi(2) = (84.9 +/- 13.5)degrees through an isospin analysis in the B -&gt;rho rho system. We furthermore find 125 +/- 41 B-0 -&gt; f(0)rho(0) events, corresponding to B(B-0 -&gt; f(0)rho(0)) x B(f(0) -&gt; pi(+)pi(-)) = (0.78 +/- 0.22(stat) +/- 0.11(syst)) x 10(-6), with a significance of 3.1 standard deviations. We find no other significant contribution with the same final state, and set upper limits at 90% confidence level on the (product) branching fractions, B(B-0 -&gt; pi(+)pi(-)pi(+)pi(-)) &lt; 11.2 x 10(-6), B(B-0 -&gt; rho(0)pi(+)pi(-)) &lt; 12.0 x 10(-6), B(B-0 -&gt; f(0)pi(+)pi(-)) x B(f(0) -&gt; pi(+)pi(-)) &lt; 3.0 x 10(-6) and B(B-0 -&gt; f(0)f(0)) x B(f(0) -&gt; pi(+)pi(-))(2) &lt; 0.2 x 10(-6).

    DOI: 10.1103/PhysRevD.89.072008

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  • Updated cross section measurement of e(+)e(-)-&gt; K(+)K(-)J/Psi and K(s)(0)K(s)(0)J/Psi via initial state radiation at Belle 査読

    C. P. Shen, C. Z. Yuan, P. Wang, A. Abdesselam, I. Adachi, H. Aihara, S. Al Said, D. M. Asner, V. Aulchenko, T. Aushev, R. Ayad, A. M. Bakich, A. Bala, A. Bobrov, G. Bonvicini, A. Bozek, M. Bracko, T. E. Browder, V. Chekelian, A. Chen, B. G. Cheon, K. Chilikin, R. Chistov, K. Cho, V. Chobanova, S. -K. Choi, Y. Choi, D. Cinabro, J. Dalseno, M. Danilov, Z. Dolezal, A. Drutskoy, D. Dutta, S. Eidelman, D. Epifanov, H. Farhat, J. E. Fast, T. Ferber, A. Frey, V. Gaur, S. Ganguly, R. Gillard, R. Glattauer, Y. M. Goh, B. Golob, J. Haba, K. Hayasaka, H. Hayashii, X. H. He, Y. Hoshi, W. -S. Hou, Y. B. Hsiung, H. J. Hyun, T. Iijima, A. Ishikawa, R. Itoh, Y. Iwasaki, D. Joffe, T. Julius, J. H. Kang, E. Kato, T. Kawasaki, C. Kiesling, D. Y. Kim, H. J. Kim, J. B. Kim, J. H. Kim, K. T. Kim, M. J. Kim, Y. J. Kim, K. Kinoshita, B. R. Ko, P. Kodys, S. Korpar, P. Krizan, P. Krokovny, A. Kuzmin, Y. -J. Kwon, S. -H. Lee, J. Li, L. Li Gioi, J. Libby, C. Liu, Z. Q. Liu, P. Lukin, D. Matvienko, K. Miyabayashi, H. Miyata, R. Mizuk, A. Moll, R. Mussa, Y. Nagasaka, E. Nakano, M. Nakao, Z. Natkaniec, M. Nayak, E. Nedelkovska, N. K. Nisar, S. Nishida, O. Nitoh, S. Okuno, C. W. Park, H. Park, T. K. Pedlar, R. Pestotnik, M. Petric, L. E. Piilonen, M. Ritter, M. Roehrken, A. Rostomyan, S. Ryu, T. Saito, Y. Sakai, T. Sanuki, Y. Sato, O. Schneider, G. Schnell, D. Semmler, K. Senyo, O. Seon, M. E. Sevior, M. Shapkin, V. Shebalin, T. -A. Shibata, J. -G. Shiu, B. Shwartz, A. Sibidanov, F. Simon, Y. -S. Sohn, A. Sokolov, E. Solovieva, S. Stanic, M. Staric, M. Steder, T. Sumiyoshi, U. Tamponi, G. Tatishvili, Y. Teramoto, M. Uchida, Y. Unno, S. Uno, P. Urquijo, Y. Usov, C. Van Hulse, P. Vanhoefer, G. Varner, V. Vorobyev, M. N. Wagner, C. H. Wang, M. Watanabe, Y. Watanabe, K. M. Williams, E. Won, H. Yamamoto, Y. Yamashita, S. Yashchenko, Y. Yook, C. C. Zhang, Z. P. Zhang, V. Zhulanov, A. Zupanc

    PHYSICAL REVIEW D   89 ( 7 )   072015-1 - 072015-9   2014年4月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    The cross sections of the processes e(+)e(-)-&gt; K(+)K(-)J/Psi and K(s)(0)K(s)(0)J/Psi are measured via initial state radiation at center-of-mass energies between the threshold and 6.0 GeV using a data sample of 980 fb(-1) collected with the Belle detector on or near the r(nS) resonances, where n=1,2,..5. The cross sections for e(+)e(-)-&gt; K(+)K(-)J/Psi are at a few pb level and the average cross section for K(s)(0)K(s)(0)J/Psi is 1.8 +/- 0.6 (stat)+/- 0.3(syst) pb between 4.4 and 5.2 GeV. All of them are consistent with previously published results with improved precision. A search for resonant structures and associated intermediate states in the cross section of the process e(+)e(-)-&gt; K(+)K(-)J/Psi is performed.

    DOI: 10.1103/PhysRevD.89.072015

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  • Measurements of branching fractions of tau lepton decays with one or more K-S(0) 査読

    S. Ryu, I. Adachi, H. Aihara, D. M. Asner, V. Aulchenko, T. Aushev, A. M. Bakich, A. Bala, B. Bhuyan, A. Bobrov, A. Bondar, G. Bonvicini, A. Bozek, M. Bracko, T. E. Browder, D. Cervenkov, V. Chekelian, B. G. Cheon, K. Chilikin, R. Chistov, K. Cho, V. Chobanova, S. -K. Choi, Y. Choi, J. Dalseno, Z. Dolezal, D. Dutta, S. Eidelman, D. Epifanov, H. Farhat, J. E. Fast, T. Ferber, V. Gaur, N. Gabyshev, S. Ganguly, A. Garmash, R. Gillard, Y. M. Goh, B. Golob, J. Haba, K. Hayasaka, H. Hayashii, Y. Hoshi, W. -S. Hou, T. Iijima, K. Inami, A. Ishikawa, T. Iwashita, T. Julius, E. Kato, C. Kiesling, B. H. Kim, D. Y. Kim, J. B. Kim, J. H. Kim, K. T. Kim, M. J. Kim, S. K. Kim, Y. J. Kim, B. R. Ko, P. Kodys, P. Krizan, P. Krokovny, T. Kuhr, A. Kuzmin, Y. -J. Kwon, S. -H. Lee, J. Li, J. Libby, D. Liventsev, P. Lukin, J. MacNaughton, D. Matvienko, K. Miyabayashi, H. Miyata, R. Mizuk, A. Moll, T. Mori, R. Mussa, E. Nakano, M. Nakao, H. Nakazawa, M. Nayak, E. Nedelkovska, N. K. Nisar, S. Nishida, O. Nitoh, S. Okuno, S. L. Olsen, P. Pakhlov, G. Pakhlova, C. W. Park, H. Park, H. K. Park, T. K. Pedlar, M. Petric, L. E. Piilonen, M. Ritter, M. Roehrken, A. Rostomyan, H. Sahoo, T. Saito, Y. Sakai, L. Santelj, T. Sanuki, V. Savinov, O. Schneider, G. Schnell, C. Schwanda, D. Semmler, O. Seon, V. Shebalin, C. P. Shen, T. -A. Shibata, J. -G. Shiu, B. Shwartz, A. Sibidanov, F. Simon, Y. -S. Sohn, A. Sokolov, E. Solovieva, S. Stanic, M. Staric, T. Sumiyoshi, U. Tamponi, G. Tatishvili, Y. Teramoto, M. Uchida, S. Uehara, Y. Unno, S. Uno, C. Van Hulse, P. Vanhoefer, G. Varner, A. Vinokurova, V. Vorobyev, M. N. Wagner, C. H. Wang, P. Wang, M. Watanabe, Y. Watanabe, E. Won, Y. Yamashita, S. Yashchenko, Y. Yook, C. Z. Yuan, Z. P. Zhang, V. Zhilich, V. Zhulanov, A. Zupanc

    PHYSICAL REVIEW D   89 ( 7 )   072009-1 - 072009-17   2014年4月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We report measurements of branching fractions of tau lepton decays to final states with a K-S(0) meson using a 669 fb(-1) data sample accumulated with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. The inclusive branching fraction is measured to be beta(tau(-) -&gt; (KSX-)-X-0 nu(tau)) = (9.15 +/- 0.01 +/- 0.15) X 10(-3), where X- can be anything; the exclusive branching fractions are beta(tau(-) -&gt; pi(-) K-S(0)nu(tau)) = (4.16 +/- 0.01 +/- 0.08) X 10(-3), beta(tau(-) -&gt; K- K-S(0)nu(tau)) = (7.40 +/- 0.07 +/- 0.27) X 10(-4), beta(tau(-) -&gt; pi(-) K-S(0)pi(0)nu(tau)) = (1.93 +/- 0.02 +/- 0.07) X 10(-3), beta(tau(-) -&gt; K- K-S(0)pi(0)nu(tau)) = (7.48 +/- 0.10 +/- 0.37) X 10(-4), beta(tau(-) -&gt; pi(-) (KSKS0)-K-0 nu(tau)) = (2.33 +/- 0.03 +/- 0.09) X 10(-4), beta(tau(-) -&gt; pi(-) (KSKS0)-K-0 pi(0)nu(tau)) = (2.00 +/- 0.22 +/- 0.20) X 10(-5), where the first uncertainty is statistical and the second is systematic. For each mode, the accuracy is improved over that of pre-B-factory measurements by a factor ranging from five to ten. In tau(-) -&gt; pi(-) (KSKS0)-K-0 pi(0)nu(tau) decays, clear signals for the intermediate states tau(-) -&gt; pi(-) f(1)(1285)nu(tau) and tau(-) -&gt; K*- K-S(0)pi(0)nu(tau) are observed.

    DOI: 10.1103/PhysRevD.89.072009

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  • Search for doubly charmed baryons and study of charmed strange baryons at Belle 査読

    Y. Kato, T. Iijima, I. Adachi, H. Aihara, D. M. Asner, T. Aushev, A. M. Bakich, A. Bala, Y. Ban, V. Bhardwaj, B. Bhuyan, A. Bobrov, G. Bonvicini, A. Bozek, M. Bračko, T. E. Browder, D. Červenkov, V. Chekelian, A. Chen, B. G. Cheon, K. Chilikin, R. Chistov, K. Cho, V. Chobanova, Y. Choi, D. Cinabro, J. Dalseno, M. Danilov, Z. DoleŽal, Z. Drásal, A. Drutskoy, D. Dutta, K. Dutta, S. Eidelman, H. Farhat, J. E. Fast, T. Ferber, V. Gaur, N. Gabyshev, S. Ganguly, A. Garmash, R. Gillard, Y. M. Goh, B. Golob, J. Haba, K. Hayasaka, H. Hayashii, X. H. He, Y. Horii, Y. Hoshi, W. S. Hou, Y. B. Hsiung, K. Inami, A. Ishikawa, Y. Iwasaki, T. Iwashita, I. Jaegle, T. Julius, J. H. Kang, E. Kato, T. Kawasaki, C. Kiesling, D. Y. Kim, H. J. Kim, J. B. Kim, J. H. Kim, M. J. Kim, Y. J. Kim, J. Klucar, B. R. Ko, P. Kodyš, S. Korpar, P. Krokovny, T. Kuhr, A. Kuzmin, Y. J. Kwon, S. H. Lee, J. Li, Y. Li, L. Li Gioi, J. Libby, Y. Liu, D. Liventsev, D. Matvienko, K. Miyabayashi, H. Miyata, R. Mizuk, A. Moll, N. Muramatsu, R. Mussa, Y. Nagasaka, E. Nakano, M. Nakao, H. Nakazawa, M. Nayak, E. Nedelkovska, C. Ng, M. Niiyama, N. K. Nisar, S. Nishida

    Physical Review D - Particles, Fields, Gravitation and Cosmology   89 ( 5 )   2014年3月

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    掲載種別:研究論文(学術雑誌)  

    We report results of a study of doubly charmed baryons and charmed strange baryons. The analysis is performed using a 980fb-1 data sample collected with the Belle detector at the KEKB asymmetric-energy e+e- collider. We search for doubly charmed baryons Ξcc+(+) with the Λc+K-π+(π+) and Ξc0π+(π+) final states. No significant signal is observed. We also search for two excited charmed strange baryons, Ξc(3055)+ and Ξc(3123)+ with the Σc++(2455)K- and Σc++(2520)K- final states. The Ξc(3055)+ signal is observed with a significance of 6.6 standard deviations including systematic uncertainty, while no signature of the Ξc(3123)+ is seen. We also study properties of the Ξc(2645)+ and measure a width of 2.6±0.2(stat)±0.4(syst)MeV/c2, which is the first significant determination. © 2014 American Physical Society.

    DOI: 10.1103/PhysRevD.89.052003

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  • Search for doubly charmed baryons and study of charmed strange baryons at Belle 査読

    Y. Kato, T. Iijima, I. Adachi, H. Aihara, D. M. Asner, T. Aushev, A. M. Bakich, A. Bala, Y. Ban, V. Bhardwaj, B. Bhuyan, A. Bobrov, G. Bonvicini, A. Bozek, M. Bracko, T. E. Browder, D. Cervenkov, V. Chekelian, A. Chen, B. G. Cheon, K. Chilikin, R. Chistov, K. Cho, V. Chobanova, Y. Choi, D. Cinabro, J. Dalseno, M. Danilov, Z. Dolezal, Z. Drasal, A. Drutskoy, D. Dutta, K. Dutta, S. Eidelman, H. Farhat, J. E. Fast, T. Ferber, V. Gaur, N. Gabyshev, S. Ganguly, A. Garmash, R. Gillard, Y. M. Goh, B. Golob, J. Haba, K. Hayasaka, H. Hayashii, X. H. He, Y. Horii, Y. Hoshi, W-S. Hou, Y. B. Hsiung, K. Inami, A. Ishikawa, Y. Iwasaki, T. Iwashita, I. Jaegle, T. Julius, J. H. Kang, E. Kato, T. Kawasaki, C. Kiesling, D. Y. Kim, H. J. Kim, J. B. Kim, J. H. Kim, M. J. Kim, Y. J. Kim, J. Klucar, B. R. Ko, P. Kodys, S. Korpar, P. Krokovny, T. Kuhr, A. Kuzmin, Y. -J. Kwon, S. -H. Lee, J. Li, Y. Li, L. Li Gioi, J. Libby, Y. Liu, D. Liventsev, D. Matvienko, K. Miyabayashi, H. Miyata, R. Mizuk, A. Moll, N. Muramatsu, R. Mussa, Y. Nagasaka, E. Nakano, M. Nakao, H. Nakazawa, M. Nayak, E. Nedelkovska, C. Ng, M. Niiyama, N. K. Nisar, S. Nishida, O. Nitoh, S. Ogawa, S. Okuno, P. Pakhlov, G. Pakhlova, C. W. Park, H. Park, H. K. Park, T. K. Pedlar, T. Peng, R. Pestotnik, M. Petric, L. E. Piilonen, M. Ritter, M. Roehrken, A. Rostomyan, H. Sahoo, T. Saito, Y. Sakai, S. Sandilya, L. Santelj, T. Sanuki, V. Savinov, O. Schneider, G. Schnell, C. Schwanda, D. Semmler, K. Senyo, O. Seon, M. Shapkin, C. P. Shen, T. -A. Shibata, J. -G. Shiu, B. Shwartz, A. Sibidanov, Y. -S. Sohn, A. Sokolov, E. Solovieva, S. Stanic, M. Staric, M. Steder, M. Sumihama, T. Sumiyoshi, U. Tamponi, K. Tanida, G. Tatishvili, Y. Teramoto, M. Uchida, S. Uehara, T. Uglov, Y. Unno, S. Uno, C. Van Hulse, P. Vanhoefer, G. Varner, A. Vinokurova, V. Vorobyev, M. N. Wagner, C. H. Wang, M. -Z. Wang, P. Wang, M. Watanabe, Y. Watanabe, K. M. Williams, E. Won, Y. Yamashita, S. Yashchenko, Z. P. Zhang, V. Zhilich, V. Zhulanov, A. Zupanc

    PHYSICAL REVIEW D   89 ( 5 )   052003-1 - 052003-14   2014年3月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We report results of a study of doubly charmed baryons and charmed strange baryons. The analysis is performed using a 980 fb(-1) data sample collected with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. We search for doubly charmed baryons Xi(+(+))(cc) with the Lambda(+)(c) K- pi(+)(pi(+) ) and. Xi(0)(c) pi(+)(pi(+)) final states. No significant signal is observed. We also search for two excited charmed strange baryons, Xi(c)(3055)(+) and Xi(c)(3123)(+) with the Sigma(++)(c)(2455)K- and Sigma(++)(c)(2520)K- final states. The Xi(c)(3055)(+) signal is observed with a significance of 6.6 standard deviations including systematic uncertainty, while no signature of the Xi(c)(3123)(+) is seen. We also study properties of the Xi(c)(2645)(+) and measure a width of 2.6 +/- 0.2(stat) +/- 0.4(syst) MeV/c(2), which is the first significant determination.

    DOI: 10.1103/PhysRevD.89.052003

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  • Measurement of the tau-lepton Lifetime at Belle 査読

    K. Belous, M. Shapkin, A. Sokolov, I. Adachi, H. Aihara, D. M. Asner, V. Aulchenko, A. M. Bakich, A. Bala, B. Bhuyan, A. Bobrov, A. Bondar, G. Bonvicini, A. Bozek, M. Bracko, T. E. Browder, D. Cervenkov, V. Chekelian, A. Chen, B. G. Cheon, K. Chilikin, R. Chistov, K. Cho, V. Chobanova, Y. Choi, D. Cinabro, J. Dalseno, Z. Dolezal, D. Dutta, S. Eidelman, D. Epifanov, H. Farhat, J. E. Fast, T. Ferber, V. Gaur, S. Ganguly, A. Garmash, R. Gillard, Y. M. Goh, B. Golob, J. Haba, T. Hara, K. Hayasaka, H. Hayashii, Y. Hoshi, W. -S. Hou, T. Iijima, K. Inami, A. Ishikawa, R. Itoh, T. Iwashita, I. Jaegle, T. Julius, E. Kato, H. Kichimi, C. Kiesling, D. Y. Kim, H. J. Kim, J. B. Kim, M. J. Kim, Y. J. Kim, K. Kinoshita, B. R. Ko, P. Kodys, S. Korpar, P. Krizan, P. Krokovny, T. Kuhr, A. Kuzmin, Y. -J. Kwon, J. S. Lange, S. -H. Lee, J. Libby, D. Liventsev, P. Lukin, D. Matvienko, H. Miyata, R. Mizuk, G. B. Mohanty, T. Mori, R. Mussa, Y. Nagasaka, E. Nakano, M. Nakao, M. Nayak, E. Nedelkovska, C. Ng, N. K. Nisar, S. Nishida, O. Nitoh, S. Ogawa, S. Okuno, S. L. Olsen, W. Ostrowicz, G. Pakhlova, C. W. Park, H. Park, H. K. Park, T. K. Pedlar, R. Pestotnik, M. Petric, L. E. Piilonen, M. Ritter, M. Roehrken, A. Rostomyan, S. Ryu, H. Sahoo, T. Saito, Y. Sakai, S. Sandilya, D. Santel, L. Santelj, T. Sanuki, V. Savinov, O. Schneider, G. Schnell, C. Schwanda, D. Semmler, K. Senyo, O. Seon, V. Shebalin, C. P. Shen, T. -A. Shibata, J. -G. Shiu, B. Shwartz, A. Sibidanov, F. Simon, Y-S. Sohn, S. Stanic, M. Staric, M. Steder, T. Sumiyoshi, U. Tamponi, G. Tatishvili, Y. Teramoto, K. Trabelsi, T. Tsuboyama, M. Uchida, S. Uehara, T. Uglov, Y. Unno, S. Uno, Y. Usov, S. E. Vahsen, C. Van Hulse, P. Vanhoefer, G. Varner, K. E. Varvell, A. Vinokurova, V. Vorobyev, M. N. Wagner, C. H. Wang, P. Wang, M. Watanabe, Y. Watanabe, K. M. Williams, E. Won, J. Yamaoka, Y. Yamashita, S. Yashchenko, Y. Yook, C. Z. Yuan, Z. P. Zhang, V. Zhilich, A. Zupanc

    PHYSICAL REVIEW LETTERS   112 ( 3 )   031801-1 - 031801-6   2014年1月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    The lifetime of the tau lepton is measured using the process e(+) e(-) -&gt; tau(+) tau(-), where both tau leptons decay to 3 pi nu(tau). The result for the mean lifetime, based on 711 fb(-1) of data collected with the Belle detector at the Upsilon(4S) resonance and 60 MeV below, is tau = (290.17 +/- 0.53(stat) +/- 0.33(syst)) x 10(-15) s. The first measurement of the lifetime difference between tau(+) and tau(-) is performed. The upper limit on the relative lifetime difference between positive and negative tau leptons is vertical bar Delta tau vertical bar/tau &lt; 7.0 x 10(-3) at 90% C.L.

    DOI: 10.1103/PhysRevLett.112.031801

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  • Measurement of the decays B-s(0) -&gt; J/psi phi(1020), B-s(0) -&gt; J/psi f(2)'(1525) and B-s(0) -&gt; J/psi K+K- at Belle 査読

    F. Thorne, C. Schwanda, I. Adachi, H. Aihara, D. M. Asner, V. Aulchenko, T. Aushev, A. M. Bakich, A. Bala, B. Bhuyan, G. Bonvicini, M. Bracko, M. -C. Chang, V. Chekelian, A. Chen, B. G. Cheon, K. Chilikin, R. Chistov, K. Cho, V. Chobanova, S. -K. Choi, Y. Choi, D. Cinabro, J. Dalseno, Z. Dolezal, Z. Drasal, D. Dutta, S. Eidelman, S. Esen, H. Farhat, J. E. Fast, M. Feindt, T. Ferber, V. Gaur, N. Gabyshev, R. Gillard, R. Glattauer, Y. M. Goh, B. Golob, J. Haba, T. Hara, K. Hayasaka, H. Hayashii, Y. Hoshi, W. -S. Hou, H. J. Hyun, T. Iijima, A. Ishikawa, R. Itoh, Y. Iwasaki, T. Iwashita, I. Jaegle, T. Julius, D. H. Kah, J. H. Kang, E. Kato, C. Kiesling, D. Y. Kim, H. O. Kim, J. B. Kim, J. H. Kim, M. J. Kim, Y. J. Kim, J. Klucar, B. R. Ko, P. Kodys, P. Krizan, P. Krokovny, T. Kuhr, J. S. Lange, S. -H. Lee, J. Libby, C. Liu, Y. Liu, P. Lukin, D. Matvienko, H. Miyata, R. Mizuk, G. B. Mohanty, A. Moll, T. Mori, Y. Nagasaka, E. Nakano, M. Nakao, Z. Natkaniec, M. Nayak, C. Ng, S. Nishida, O. Nitoh, S. Okuno, C. Oswald, G. Pakhlova, H. Park, H. K. Park, R. Pestotnik, M. Petric, L. E. Piilonen, M. Prim, M. Ritter, A. Rostomyan, S. Ryu, H. Sahoo, T. Saito, Y. Sakai, S. Sandilya, L. Santelj, T. Sanuki, V. Savinov, O. Schneider, G. Schnell, D. Semmler, K. Senyo, M. E. Sevior, M. Shapkin, C. P. Shen, T. -A. Shibata, J. -G. Shiu, B. Shwartz, A. Sibidanov, F. Simon, Y. -S. Sohn, A. Sokolov, E. Solovieva, S. Stanic, M. Staric, U. Tamponi, K. Tanida, G. Tatishvili, Y. Teramoto, M. Uchida, Y. Unno, S. Uno, P. Urquijo, S. E. Vahsen, G. Varner, K. E. Varvell, V. Vorobyev, M. N. Wagner, C. H. Wang, M. -Z. Wang, P. Wang, X. L. Wang, Y. Watanabe, K. M. Williams, E. Won, J. Yamaoka, Y. Yamashita, S. Yashchenko, C. Z. Yuan, Z. P. Zhang, V. Zhilich, A. Zupanc

    PHYSICAL REVIEW D   88 ( 11 )   114006-1 - 114006-8   2013年12月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We report a measurement of the branching fraction of the decay B-s(0) -&gt; J/psi phi(1020), evidence and a branching fraction measurement for B-s(0) -&gt; J/psi f(2)'(1525), and the determination of the total B-s(0) -&gt; J/psi K+K- branching fraction, including the resonant and nonresonant contributions to the K+K- channel. We also determine the S-wave contribution within the phi(1020) mass region. The absolute branching fractions are B[B-s(0) -&gt; J/psi phi(1020)] = (1.25 +/- 0.07(stat) +/- 0.08(syst) +/- 0.22(f(s))) x 10(-3), B[B-s(0) -&gt; J/psi f(2)'(1525)] = (0.26 +/- 0.06(stat) +/- 0.02(syst) +/- 0.05(f(s))) x 10(-3), and B[B-s(0) -&gt; J/psi K+K-] = (1.01 +/- 0.09(stat) +/- 0.10(syst) +/- 0.18(f(s))) x 10(-3), where the last systematic error is due to the branching fraction of b (b) over bar -&gt; B-s(()*()) B-s(()*()). The branching fraction ratio is found to be B[B-s(0) -&gt; J/psi f(2)'(1525)]/B[B-s(0) -&gt; J/psi phi(1020)] = (21.5 +/- 4.9(stat) +/- 2.6(syst))%. All results are based on a 121. 4 fb(-1) data sample collected at the Upsilon(5S) resonance by the Belle experiment at the KEKB asymmetric-energy e(+)e(-) collider.

    DOI: 10.1103/PhysRevD.88.114006

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  • High-statistics study of K-S(0) pair production in two-photon collisions 査読

    S. Uehara, Y. Watanabe, H. Nakazawa, I. Adachi, H. Aihara, D. M. Asner, V. Aulchenko, T. Aushev, A. M. Bakich, A. Bala, V. Bhardwaj, B. Bhuyan, A. Bondar, G. Bonvicini, A. Bozek, M. Bracko, V. Chekelian, A. Chen, P. Chen, B. G. Cheon, K. Chilikin, R. Chistov, K. Cho, V. Chobanova, S. -K. Choi, Y. Choi, D. Cinabro, J. Dalseno, J. Dingfelder, Z. Dolezal, D. Dutta, S. Eidelman, D. Epifanov, H. Farhat, J. E. Fast, M. Feindt, T. Ferber, A. Frey, V. Gaur, N. Gabyshev, S. Ganguly, R. Gillard, F. Giordano, Y. M. Goh, B. Golob, J. Haba, K. Hayasaka, H. Hayashii, Y. Hoshi, W. -S. Hou, H. J. Hyun, T. Iijima, A. Ishikawa, R. Itoh, Y. Iwasaki, T. Julius, D. H. Kah, J. H. Kang, E. Kato, H. Kawai, T. Kawasaki, C. Kiesling, D. Y. Kim, H. O. Kim, J. B. Kim, J. H. Kim, Y. J. Kim, J. Klucar, B. R. Ko, P. Kodys, S. Korpar, P. Krizan, P. Krokovny, T. Kumita, A. Kuzmin, Y. -J. Kwon, S. -H. Lee, J. Li, Y. Li, C. Liu, Z. Q. Liu, D. Liventsev, P. Lukin, D. Matvienko, K. Miyabayashi, H. Miyata, R. Mizuk, A. Moll, T. Mori, N. Muramatsu, R. Mussa, Y. Nagasaka, M. Nakao, C. Ng, N. K. Nisar, S. Nishida, O. Nitoh, S. Ogawa, S. Okuno, G. Pakhlova, C. W. Park, H. Park, H. K. Park, T. K. Pedlar, R. Pestotnik, M. Petric, L. E. Piilonen, M. Ritter, M. Roehrken, A. Rostomyan, H. Sahoo, T. Saito, Y. Sakai, S. Sandilya, L. Santelj, T. Sanuki, V. Savinov, O. Schneider, G. Schnell, C. Schwanda, R. Seidl, K. Senyo, O. Seon, M. Shapkin, C. P. Shen, T. -A. Shibata, J. -G. Shiu, B. Shwartz, A. Sibidanov, F. Simon, Y. -S. Sohn, A. Sokolov, E. Solovieva, M. Staric, M. Steder, M. Sumihama, T. Sumiyoshi, U. Tamponi, K. Tanida, G. Tatishvili, Y. Teramoto, M. Uchida, T. Uglov, Y. Unno, S. Uno, P. Urquijo, S. E. Vahsen, C. Van Hulse, G. Varner, M. N. Wagner, C. H. Wang, M. -Z. Wang, P. Wang, X. L. Wang, K. M. Williams, E. Won, Y. Yamashita, S. Yashchenko, Y. Yook, C. Z. Yuan, Y. Yusa, C. C. Zhang, Z. P. Zhang, V. Zhilich, V. Zhulanov, A. Zupanc

    PROGRESS OF THEORETICAL AND EXPERIMENTAL PHYSICS   ( 12 )   2013年12月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:OXFORD UNIV PRESS INC  

    We report a high-statistics measurement of the differential cross section of the process gamma gamma -&gt; (KSKS0)-K-0 in the range 1.05 GeV &lt;= W &lt;= 4.00 GeV, where W is the center-of-mass energy of the colliding photons, using 972 fb(-1) of data collected with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider operated at and near the Upsilon-resonance region. The differential cross section is fitted by parameterized S-, D-0-, D-2-, G(0)-, and G(2)-wave amplitudes. In the D-2 wave, the f(2)(1270), a(2)(1320), and f(2)'(1525) are dominant and a resonance, the f(2)(2200), is also present. The f(0)(1710) and possibly the f(0)(2500) are seen in the S wave. The mass, total width, and product of the two-photon partial decay width and decay branching fraction to the K (K) over bar state Gamma(gamma gamma) B(K (K) over bar) are extracted for the f(2)'(1525), f(0)(1710), f(2)(2200), and f(0)(2500). The destructive interference between the f(2)(1270) and a(2)(1320) is confirmed by measuring their relative phase. The parameters of the charmonium states chi(c0) and chi(c2) are updated. Possible contributions from the chi(c0)(2P) and chi(c2)(2P) states are discussed. A new upper limit for the branching fraction of the P- and CP-violating decay channel eta(c) -&gt; (KSKS0)-K-0 is reported. The detailed behavior of the cross section is updated and compared with QCD-based calculations.

    DOI: 10.1093/ptep/ptt097

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  • Measurement of the CP violation parameters in B-0 -&gt; pi(+) pi(-) decays 査読

    J. Dalseno, K. Prothmann, C. Kiesling, I. Adachi, H. Aihara, K. Arinstein, D. M. Asner, V. Aulchenko, T. Aushev, A. M. Bakich, A. Bala, A. Bay, P. Behera, V. Bhardwaj, B. Bhuyan, A. Bondar, G. Bonvicini, A. Bozek, M. Bracko, T. E. Browder, V. Chekelian, A. Chen, P. Chen, B. G. Cheon, K. Chilikin, R. Chistov, K. Cho, V. Chobanova, S-K Choi, Y. Choi, D. Cinabro, M. Danilov, Z. Dolezal, Z. Drasal, A. Drutskoy, D. Dutta, K. Dutta, S. Eidelman, H. Farhat, J. E. Fast, M. Feindt, T. Ferber, A. Frey, V. Gaur, S. Ganguly, R. Gillard, Y. M. Goh, B. Golob, J. Haba, T. Hara, K. Hayasaka, H. Hayashii, T. Higuchi, Y. Hoshi, W-S Hou, H. J. Hyun, T. Iijima, A. Ishikawa, R. Itoh, Y. Iwasaki, T. Julius, D. H. Kah, E. Kato, H. Kawai, T. Kawasaki, D. Y. Kim, H. J. Kim, J. B. Kim, J. H. Kim, K. T. Kim, Y. J. Kim, K. Kinoshita, J. Klucar, B. R. Ko, P. Kodys, S. Korpar, P. Krizan, P. Krokovny, B. Kronenbitter, A. Kuzmin, Y-J Kwon, S-H Lee, J. Li, Y. Li, L. Li Gioi, J. Libby, C. Liu, D. Liventsev, P. Lukin, D. Matvienko, K. Miyabayashi, H. Miyata, R. Mizuk, G. B. Mohanty, A. Moll, T. Mori, H-G Moser, N. Muramatsu, R. Mussa, Y. Nagasaka, M. Nakao, M. Nayak, E. Nedelkovska, C. Ng, C. Niebuhr, N. K. Nisar, S. Nishida, O. Nitoh, S. Ogawa, S. Okuno, S. L. Olsen, P. Pakhlov, G. Pakhlova, C. W. Park, H. Park, H. K. Park, T. K. Pedlar, R. Pestotnik, M. Petric, L. E. Piilonen, M. Ritter, M. Roehrken, A. Rostomyan, S. Ryu, H. Sahoo, T. Saito, Y. Sakai, S. Sandilya, L. Santelj, T. Sanuki, V. Savinov, O. Schneider, G. Schnell, C. Schwanda, A. J. Schwartz, D. Semmler, K. Senyo, O. Seon, M. E. Sevior, M. Shapkin, C. P. Shen, T-A Shibata, J-G Shiu, B. Shwartz, A. Sibidanov, F. Simon, Y-S Sohn, E. Solovieva, S. Stanic, M. Staric, M. Steder, M. Sumihama, K. Sumisawa, T. Sumiyoshi, U. Tamponi, G. Tatishvili, Y. Teramoto, K. Trabelsi, T. Tsuboyama, M. Uchida, S. Uehara, T. Uglov, Y. Unno, S. Uno, P. Urquijo, Y. Ushiroda, S. E. Vahsen, C. Van Hulse, P. Vanhoefer, G. Varner, V. Vorobyev, M. N. Wagner, C. H. Wang, P. Wang, X. L. Wang, M. Watanabe, Y. Watanabe, K. M. Williams, E. Won, B. D. Yabsley, H. Yamamoto, Y. Yamashita, S. Yashchenko, Y. Yook, C. Z. Yuan, Y. Yusa, Z. P. Zhang, V. Zhilich, V. Zhulanov, A. Zupanc

    PHYSICAL REVIEW D   88 ( 9 )   092003-1 - 092003-11   2013年11月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We present a measurement of the charge-parity (CP) violating parameters in B-0 -&gt; pi(+) pi(-) decays. The results are obtained from the final data sample containing 772 x 10(6) B (B) over bar pairs collected at the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+) e(-) collider. We obtain the CP violation parameters
    A(cp)(B-0 -&gt; pi(+) pi(-)) = +0.33 +/- 0.06(stat) +/- 0.03(syst),
    S-cp(B-0 -&gt; pi(+) pi(-)) = -0.64 +/- 0.08(stat) +/- 0.03(syst),
    where A(CP) and S-CP represent the direct and mixing-induced CP asymmetries in B-0 -&gt; pi(+) pi(-) decays, respectively. Using an isospin analysis including results from other Belle measurements, we find 23.8 degrees &lt; phi(2) &lt; 66.8 degrees is disfavored at the 1 sigma level, where phi(2) is one of the three interior angles of the Cabibbo-Kobayashi-Maskawa unitarity triangle related to B-u,B-d decays.

    DOI: 10.1103/PhysRevD.88.092003

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  • First observation of Cabibbo-suppressed Xi(0)(c) decays 査読

    R. Chistov, I. Adachi, H. Aihara, D. M. Asner, V. Aulchenko, T. Aushev, A. M. Bakich, A. Bala, V. Bhardwaj, B. Bhuyan, A. Bondar, G. Bonvicini, A. Bozek, M. Bracko, J. Brodzicka, T. E. Browder, V. Chekelian, A. Chen, P. Chen, B. G. Cheon, K. Chilikin, I. -S. Cho, K. Cho, V. Chobanova, Y. Choi, D. Cinabro, M. Danilov, Z. Dolezal, A. Drutskoy, D. Dutta, S. Eidelman, D. Epifanov, H. Farhat, J. E. Fast, M. Feindt, T. Ferber, A. Frey, V. Gaur, N. Gabyshev, S. Ganguly, R. Gillard, Y. M. Goh, B. Golob, J. Haba, T. Hara, K. Hayasaka, H. Hayashii, Y. Horii, Y. Hoshi, W. -S. Hou, H. J. Hyun, T. Iijima, A. Ishikawa, R. Itoh, Y. Iwasaki, T. Julius, D. H. Kah, J. H. Kang, E. Kato, T. Kawasaki, H. Kichimi, C. Kiesling, D. Y. Kim, H. J. Kim, J. B. Kim, J. H. Kim, K. T. Kim, Y. J. Kim, K. Kinoshita, J. Klucar, B. R. Ko, P. Kodys, S. Korpar, P. Krizan, T. Kumita, A. Kuzmin, Y. -J. Kwon, J. S. Lange, S. -H. Lee, J. Li, Y. Li, J. Libby, C. Liu, Y. Liu, D. Liventsev, P. Lukin, D. Matvienko, K. Miyabayashi, H. Miyata, R. Mizuk, G. B. Mohanty, A. Moll, T. Mori, N. Muramatsu, R. Mussa, E. Nakano, M. Nakao, Z. Natkaniec, M. Nayak, E. Nedelkovska, C. Ng, S. Nishida, O. Nitoh, S. Ogawa, S. Okuno, S. L. Olsen, C. Oswald, G. Pakhlova, C. W. Park, H. Park, H. K. Park, R. Pestotnik, M. Petric, L. E. Piilonen, M. Ritter, M. Roehrken, A. Rostomyan, H. Sahoo, T. Saito, K. Sakai, Y. Sakai, S. Sandilya, D. Santel, L. Santelj, T. Sanuki, V. Savinov, O. Schneider, G. Schnell, C. Schwanda, D. Semmler, K. Senyo, O. Seon, M. E. Sevior, M. Shapkin, C. P. Shen, T. -A. Shibata, J. -G. Shiu, B. Shwartz, A. Sibidanov, F. Simon, Y. -S. Sohn, A. Sokolov, E. Solovieva, M. Staric, M. Steder, M. Sumihama, T. Sumiyoshi, U. Tamponi, K. Tanida, G. Tatishvili, Y. Teramoto, M. Uchida, T. Uglov, Y. Unno, S. Uno, P. Urquijo, Y. Usov, S. E. Vahsen, C. Van Hulse, P. Vanhoefer, G. Varner, K. E. Varvell, A. Vinokurova, M. N. Wagner, C. H. Wang, M. -Z. Wang, P. Wang, X. L. Wang, Y. Watanabe, K. M. Williams, E. Won, B. D. Yabsley, J. Yamaoka, Y. Yamashita, S. Yashchenko, Y. Yook, Y. Yusa, Z. P. Zhang, V. Zhilich, V. Zhulanov, A. Zupanc

    PHYSICAL REVIEW D   88 ( 7 )   071103-1 - 071103-7   2013年10月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We report the first observation of the Cabibbo-suppressed decays Xi(0)(c) -&gt; Xi K--(+), Xi(0)(c) -&gt; Lambda K+K- and Xi(0)(c) -&gt; Lambda phi, using a data sample of 711 fb(-1) collected at the Y(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. We measure the ratios of branching fractions to be B(Xi(0)(c)-&gt;Xi K--(+))/B(Xi(0)(c)-&gt;Xi(-)pi(+)) = (2.75 +/- 0.51 +/- 0.25) x 10(-2), B(Xi(0)(c)-&gt;Lambda K+K-)/B(Xi(0)(c)-&gt;Xi(-)pi(+)) = (2.86 +/- 0.61 +/- 0.37) x 10(-2) and B(Xi(0)(c)-&gt;Lambda phi)/B(Xi(0)(c)-&gt;Xi(-)pi(+)) = (3.43 +/- 0.58 +/- 0.32) X 10(-2), where the first uncertainty is statistical and the second is systematic.

    DOI: 10.1103/PhysRevD.88.071103

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  • Experimental constraints on the spin and parity of the Z(4430)(+) 査読

    K. Chilikin, R. Mizuk, I. Adachi, H. Aihara, K. Arinstein, D. M. Asner, V. Aulchenko, T. Aushev, T. Aziz, A. M. Bakich, A. Bala, V. Bhardwaj, B. Bhuyan, A. Bondar, G. Bonvicini, A. Bozek, M. Bracko, J. Brodzicka, T. E. Browder, V. Chekelian, A. Chen, P. Chen, B. G. Cheon, R. Chistov, I. -S. Cho, K. Cho, V. Chobanova, S. -K. Choi, Y. Choi, D. Cinabro, J. Dalseno, M. Danilov, Z. Dolezal, D. Dutta, S. Eidelman, D. Epifanov, H. Farhat, J. E. Fast, T. Ferber, A. Frey, V. Gaur, N. Gabyshev, S. Ganguly, R. Gillard, Y. M. Goh, B. Golob, J. Haba, T. Hara, K. Hayasaka, H. Hayashii, Y. Horii, Y. Hoshi, W. -S. Hou, H. J. Hyun, T. Iijima, A. Ishikawa, R. Itoh, Y. Iwasaki, T. Julius, D. H. Kah, J. H. Kang, E. Kato, T. Kawasaki, H. Kichimi, C. Kiesling, D. Y. Kim, H. J. Kim, J. B. Kim, J. H. Kim, K. T. Kim, Y. J. Kim, K. Kinoshita, J. Klucar, B. R. Ko, P. Kodys, S. Korpar, P. Krizan, P. Krokovny, T. Kumita, A. Kuzmin, Y. -J. Kwon, J. S. Lange, S. -H. Lee, J. Li, Y. Li, J. Libby, C. Liu, Y. Liu, D. Liventsev, P. Lukin, J. MacNaughton, D. Matvienko, K. Miyabayashi, H. Miyata, G. B. Mohanty, A. Moll, T. Mori, N. Muramatsu, R. Mussa, E. Nakano, M. Nakao, Z. Natkaniec, M. Nayak, E. Nedelkovska, C. Ng, N. K. Nisar, S. Nishida, O. Nitoh, S. Ogawa, S. Okuno, S. L. Olsen, C. Oswald, P. Pakhlov, G. Pakhlova, C. W. Park, H. Park, H. K. Park, T. K. Pedlar, R. Pestotnik, M. Petric, L. E. Piilonen, M. Ritter, M. Roehrken, A. Rostomyan, H. Sahoo, T. Saito, K. Sakai, Y. Sakai, S. Sandilya, D. Santel, L. Santelj, T. Sanuki, V. Savinov, O. Schneider, G. Schnell, C. Schwanda, D. Semmler, K. Senyo, O. Seon, M. E. Sevior, M. Shapkin, C. P. Shen, T. -A. Shibata, J. -G. Shiu, A. Sibidanov, F. Simon, Y. -S. Sohn, A. Sokolov, E. Solovieva, M. Staric, M. Steder, M. Sumihama, T. Sumiyoshi, U. Tamponi, K. Tanida, G. Tatishvili, Y. Teramoto, K. Trabelsi, M. Uchida, S. Uehara, Y. Unno, S. Uno, P. Urquijo, Y. Usov, S. E. Vahsen, C. Van Hulse, P. Vanhoefer, G. Varner, K. E. Varvell, A. Vinokurova, V. Vorobyev, M. N. Wagner, C. H. Wang, M. -Z. Wang, P. Wang, X. L. Wang, M. Watanabe, Y. Watanabe, K. M. Williams, E. Won, B. D. Yabsley, H. Yamamoto, Y. Yamashita, S. Yashchenko, Y. Yook, Y. Yusa, Z. P. Zhang, V. Zhilich, V. Zhulanov, A. Zupanc

    PHYSICAL REVIEW D   88 ( 7 )   074026-1 - 074026-12   2013年10月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We perform a full amplitude analysis of B-0 -&gt; psi'K+ pi(-) decays, with psi' -&gt; mu + mu- or e+e -, to constrain the spin and parity of the Z(4430)-. The JP = 1(+) hypothesis is favored over the 0(-), 1(-), 2(-) and 2(+) hypotheses at the levels of 3: 4 sigma, 3: 7 sigma, 4: 7 sigma and 5.1 sigma , respectively. The analysis is based on a 711 fb(-1) data sample that contains 772 x 10(6) B (B) over bar pairs collected at the Upsilon(4S) resonance by the Belle detector at the asymmetric-energy e(+)e(-) collider KEKB.

    DOI: 10.1103/PhysRevD.88.074026

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  • Measurement of the wrong-sign decay D0→K<sup>+</sup>π <sup>-</sup>π<sup>+</sup>π<sup>-</sup> 査読

    E. White, A. J. Schwartz, I. Adachi, H. Aihara, D. M. Asner, V. Aulchenko, T. Aushev, A. M. Bakich, A. Bala, V. Bhardwaj, B. Bhuyan, G. Bonvicini, A. Bozek, M. Bračko, J. Brodzicka, T. E. Browder, V. Chekelian, A. Chen, P. Chen, B. G. Cheon, K. Chilikin, R. Chistov, I. S. Cho, K. Cho, V. Chobanova, Y. Choi, D. Cinabro, J. Dingfelder, Z. Doležal, Z. Drásal, D. Dutta, S. Eidelman, D. Epifanov, S. Esen, H. Farhat, J. E. Fast, M. Feindt, T. Ferber, A. Frey, V. Gaur, N. Gabyshev, S. Ganguly, R. Gillard, Y. M. Goh, B. Golob, T. Hara, K. Hayasaka, H. Hayashii, Y. Hoshi, W. S. Hou, Y. B. Hsiung, H. J. Hyun, T. Iijima, A. Ishikawa, R. Itoh, Y. Iwasaki, T. Iwashita, I. Jaegle, T. Julius, D. H. Kah, J. H. Kang, E. Kato, C. Kiesling, D. Y. Kim, H. O. Kim, J. B. Kim, J. H. Kim, M. J. Kim, Y. J. Kim, K. Kinoshita, J. Klucar, B. R. Ko, P. Kodyš, S. Korpar, P. Križan, P. Krokovny, B. Kronenbitter, T. Kuhr, T. Kumita, A. Kuzmin, Y. J. Kwon, J. S. Lange, S. H. Lee, J. Li, Y. Li, L. Li Gioi, J. Libby, C. Liu, Y. Liu, D. Liventsev, P. Lukin, D. Matvienko, H. Miyata, R. Mizuk, G. B. Mohanty, A. Moll, R. Mussa, E. Nakano, M. Nakao, Z. Natkaniec

    Physical Review D - Particles, Fields, Gravitation and Cosmology   88 ( 6 )   051101-1 - 051101-6   2013年9月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    A measurement of the rate for the "wrong-sign" decay D0→K+π-π+π- relative to that for the "right-sign" decay D0→K -π+π+π- is presented. Using 791 fb-1 of data collected with the Belle detector, we obtain a branching fraction ratio of Rws=[0.324±0.008(stat)±0. 007(sys)]%. Multiplying this ratio by the world average value for the branching fraction B(D0→K-π+π+π -) gives a branching fraction B(D0→K+π -π+π-)=(2.61±0.06-0.08+0.09) ×10-4. © 2013 American Physical Society.

    DOI: 10.1103/PhysRevD.88.051101

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  • Search for bottomonium states in exclusive radiative υ(2s) decays 査読

    S. Sandilya, K. Trabelsi, G. B. Mohanty, I. Adachi, H. Aihara, D. M. Asner, T. Aushev, T. Aziz, A. M. Bakich, A. Bala, V. Bhardwaj, B. Bhuyan, A. Bondar, G. Bonvicini, A. Bozek, M. Bračko, T. E. Browder, P. Chen, B. G. Cheon, K. Chilikin, R. Chistov, K. Cho, V. Chobanova, S. K. Choi, Y. Choi, D. Cinabro, J. Dalseno, J. Dingfelder, Z. Doležal, A. Drutskoy, D. Dutta, S. Eidelman, H. Farhat, J. E. Fast, M. Feindt, T. Ferber, A. Frey, V. Gaur, N. Gabyshev, S. Ganguly, R. Gillard, Y. M. Goh, B. Golob, J. Haba, T. Hara, K. Hayasaka, H. Hayashii, Y. Hoshi, W. S. Hou, Y. B. Hsiung, H. J. Hyun, T. Iijima, A. Ishikawa, R. Itoh, Y. Iwasaki, T. Julius, D. H. Kah, J. H. Kang, E. Kato, H. Kawai, T. Kawasaki, C. Kiesling, D. Y. Kim, H. O. Kim, J. B. Kim, J. H. Kim, Y. J. Kim, J. Klucar, B. R. Ko, P. Kodyš, S. Korpar, P. Križan, P. Krokovny, T. Kumita, A. Kuzmin, Y. J. Kwon, J. S. Lange, S. H. Lee, J. Li, Y. Li, J. Libby, Z. Q. Liu, D. Liventsev, P. Lukin, J. Macnaughton, D. Matvienko, K. Miyabayashi, H. Miyata, R. Mizuk, A. Moll, N. Muramatsu, R. Mussa, Y. Nagasaka, M. Nakao, M. Nayak, C. Ng, N. K. Nisar, S. Nishida, O. Nitoh, S. Ogawa

    Physical Review Letters   111 ( 11 )   112001-1 - 112001-6   2013年9月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    We search for bottomonium states in Υ(2S)→(bb̄)γ decays with an integrated luminosity of 24.7 fb-1 recorded at the Υ(2S) resonance with the Belle detector at KEK, containing (157.8±3.6)×106 Υ(2S) events. The (bb̄) system is reconstructed in 26 exclusive hadronic final states composed of charged pions, kaons, protons, and KS0 mesons. We find no evidence for the state recently observed around 9975 MeV (Xbb̄) in an analysis based on a data sample of 9.3×106 Υ(2S) events collected with the CLEO III detector. We set a 90% confidence level upper limit on the branching fraction B[Υ(2S)→Xbb̄γ]×ΣiB[X bb̄→hi]<4.9×10-6, summed over the exclusive hadronic final states employed in our analysis. This result is an order of magnitude smaller than the measurement reported with CLEO data. We also set an upper limit for the ηb(1S) state of B[Υ(2S)→ηb(1S)γ]×ΣiB[η b(1S)→hi]<3.7×10-6. © 2013 American Physical Society.

    DOI: 10.1103/PhysRevLett.111.112001

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  • First observation of the Z(b)(0)(10610) in a Dalitz analysis of Upsilon(10860) -&gt; Upsilon(nS)pi(0)pi(0) 査読

    P. Krokovny, A. Bondar, I. Adachi, H. Aihara, K. Arinstein, D. M. Asner, V. Aulchenko, T. Aushev, T. Aziz, A. M. Bakich, A. Bala, A. Bay, V. Bhardwaj, B. Bhuyan, G. Bonvicini, C. Bookwalter, A. Bozek, M. Bracko, T. E. Browder, P. Chang, A. Chen, P. Chen, B. G. Cheon, K. Chilikin, R. Chistov, I. -S. Cho, K. Cho, V. Chobanova, S. -K. Choi, Y. Choi, D. Cinabro, J. Dalseno, M. Danilov, J. Dingfelder, Z. Dolezal, Z. Drasal, A. Drutskoy, D. Dutta, S. Eidelman, D. Epifanov, H. Farhat, J. E. Fast, M. Feindt, T. Ferber, A. Frey, V. Gaur, N. Gabyshev, S. Ganguly, A. Garmash, R. Gillard, Y. M. Goh, B. Golob, J. Haba, T. Hara, K. Hayasaka, H. Hayashii, Y. Hoshi, W. -S. Hou, Y. B. Hsiung, H. J. Hyun, T. Iijima, A. Ishikawa, R. Itoh, Y. Iwasaki, T. Julius, D. H. Kah, J. H. Kang, E. Kato, H. Kawai, T. Kawasaki, C. Kiesling, D. Y. Kim, H. O. Kim, J. B. Kim, J. H. Kim, Y. J. Kim, K. Kinoshita, J. Klucar, B. R. Ko, P. Kodys, S. Korpar, P. Krizan, T. Kuhr, T. Kumita, A. Kuzmin, Y. -J. Kwon, J. S. Lange, S. -H. Lee, J. Li, Y. Li, J. Libby, Y. Liu, Z. Q. Liu, D. Liventsev, P. Lukin, D. Matvienko, K. Miyabayashi, H. Miyata, R. Mizuk, G. B. Mohanty, A. Moll, N. Muramatsu, R. Mussa, Y. Nagasaka, M. Nakao, M. Nayak, E. Nedelkovska, C. Ng, N. K. Nisar, S. Nishida, O. Nitoh, S. Ogawa, C. Oswald, G. Pakhlova, C. W. Park, H. Park, H. K. Park, T. K. Pedlar, R. Pestotnik, M. Petric, L. E. Piilonen, A. Poluektov, M. Ritter, M. Roehrken, A. Rostomyan, S. Ryu, H. Sahoo, T. Saito, K. Sakai, Y. Sakai, S. Sandilya, L. Santelj, T. Sanuki, Y. Sato, V. Savinov, O. Schneider, G. Schnell, C. Schwanda, D. Semmler, K. Senyo, O. Seon, M. E. Sevior, M. Shapkin, V. Shebalin, T. -A. Shibata, J. -G. Shiu, B. Shwartz, A. Sibidanov, F. Simon, Y. -S. Sohn, A. Sokolov, E. Solovieva, S. Stanic, M. Staric, M. Steder, T. Sumiyoshi, U. Tamponi, K. Tanida, G. Tatishvili, Y. Teramoto, K. Trabelsi, T. Tsuboyama, M. Uchida, S. Uehara, T. Uglov, Y. Unno, S. Uno, P. Urquijo, S. E. Vahsen, C. Van Hulse, P. Vanhoefer, G. Varner, V. Vorobyev, M. N. Wagner, C. H. Wang, M. -Z. Wang, P. Wang, X. L. Wang, Y. Watanabe, K. M. Williams, E. Won, Y. Yamashita, S. Yashchenko, Y. Yook, C. Z. Yuan, Y. Yusa, C. C. Zhang, Z. P. Zhang, V. Zhilich, V. Zhulanov, A. Zupanc

    PHYSICAL REVIEW D   88 ( 5 )   052016-1 - 052016-11   2013年9月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We report the first observation of Upsilon(10860) -&gt; Upsilon(1, 2, 3S)pi(0)pi(0) decays. The neutral partner of the Z(1/b)(10610), the Z(b)(0)(10610) decaying to Upsilon(2, 3S)pi(0), is observed for the first time with a 6.5 sigma significance using a Dalitz analysis of Upsilon(10860) -&gt; Upsilon (2, 3S)pi(0)pi(0) decays. The results are obtained with a 121.4 fb(-1) data sample collected with the Belle detector at the Upsilon(10860) resonance at the KEKB asymmetric- energy e(+)e(-) collider.

    DOI: 10.1103/PhysRevD.88.052016

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  • Measurement of e(+)e(-) -&gt; omega pi(0), K*(892)(K)over-bar and K-2*(1430)(K)over-bar at root s near 10.6 GeV 査読

    C. P. Shen, C. Z. Yuan, A. Sibidanov, P. Wang, K. Hayasaka, X. L. Wang, I. Adachi, H. Aihara, D. M. Asner, T. Aushev, A. M. Bakich, A. Bala, V. Bhardwaj, B. Bhuyan, A. Bondar, G. Bonvicini, A. Bozek, M. Bracko, T. E. Browder, M. -C. Chang, A. Chen, B. G. Cheon, R. Chistov, I. -S. Cho, K. Cho, V. Chobanova, S. -K. Choi, Y. Choi, D. Cinabro, J. Dalseno, Z. Dolezal, Z. Drasal, A. Drutskoy, D. Dutta, S. Eidelman, H. Farhat, J. E. Fast, T. Ferber, A. Frey, V. Gaur, N. Gabyshev, S. Ganguly, R. Gillard, Y. M. Goh, B. Golob, J. Haba, H. Hayashii, Y. Hoshi, W. -S. Hou, H. J. Hyun, T. Iijima, A. Ishikawa, R. Itoh, Y. Iwasaki, T. Iwashita, I. Jaegle, T. Julius, D. H. Kah, J. H. Kang, E. Kato, T. Kawasaki, C. Kiesling, D. Y. Kim, H. J. Kim, H. O. Kim, J. B. Kim, J. H. Kim, Y. J. Kim, K. Kinoshita, B. R. Ko, P. Kodys, S. Korpar, P. Krizan, P. Krokovny, T. Kumita, A. Kuzmin, Y. -J. Kwon, J. S. Lange, S. -H. Lee, Y. Li, J. Libby, C. Liu, Y. Liu, P. Lukin, D. Matvienko, H. Miyata, R. Mizuk, A. Moll, T. Mori, N. Muramatsu, R. Mussa, Y. Nagasaka, M. Nakao, Z. Natkaniec, M. Nayak, C. Ng, S. Nishida, O. Nitoh, S. Ogawa, S. Okuno, Y. Onuki, G. Pakhlova, H. Park, H. K. Park, T. K. Pedlar, R. Pestotnik, M. Petric, L. E. Piilonen, M. Ritter, M. Roehrken, A. Rostomyan, S. Ryu, H. Sahoo, T. Saito, Y. Sakai, S. Sandilya, L. Santelj, T. Sanuki, Y. Sato, V. Savinov, O. Schneider, G. Schnell, C. Schwanda, D. Semmler, K. Senyo, M. Shapkin, T. -A. Shibata, J. -G. Shiu, B. Shwartz, F. Simon, Y. -S. Sohn, A. Sokolov, E. Solovieva, M. Staric, M. Steder, T. Sumiyoshi, U. Tamponi, K. Tanida, G. Tatishvili, Y. Teramoto, M. Uchida, S. Uehara, T. Uglov, Y. Unno, S. Uno, P. Urquijo, S. E. Vahsen, C. Van Hulse, P. Vanhoefer, G. Varner, A. Vinokurova, A. Vossen, M. N. Wagner, C. H. Wang, Y. Watanabe, K. M. Williams, E. Won, Y. Yamashita, S. Yashchenko, Y. Yook, C. C. Zhang, Z. P. Zhang, V. Zhilich

    PHYSICAL REVIEW D   88 ( 5 )   052019-1 - 052019-9   2013年9月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    Using data samples of 89 fb(-1), 703 fb(-1), and 121 fb(-1) collected with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider at center-of-mass energies 10.52 GeV, 10.58 GeV, and 10.876 GeV, respectively, we study the exclusive reactions e(+)e(-) -&gt; omega pi(0), K*(892)(K) over bar, and K-2*(1430)(K) over bar. ( Charge-conjugate modes are included implicitly.) Significant signals of omega pi(0), K*(892)(0)(K) over bar (0), and K-2*(1430)K--(+) are observed for the first time at these energies, and the energy dependencies of the cross sections are presented. On the other hand, no significant excesses for K*(892)K--(+) and K-2*(1430)(0)(K) over bar (0) are found, and we set limits on the cross section ratios R-VP = sigma(B)(e(+)e(-)-&gt; K*(892)K-0(0))/sigma(B)(e(+)e(-)-&gt; K*(892)K--(+)) &gt; 4.3, 20.0, and 5.4, and R-TP = sigma(B)(e(+)e(-) -&gt; K-2*(1430)(0)(K) over bar (0))/sigma(B)(e(+)e(-)-&gt; K-2*(1430)K--(+)) &lt; 1.1, 0.4, and 0.6, for center-of-mass energies of 10.52 GeV, 10.58 GeV, and 10.876 GeV, respectively, at the 90% C.L.

    DOI: 10.1103/PhysRevD.88.052019

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  • Measurements of branching fractions of leptonic and hadronic D-s(+) meson decays and extraction of the D-s(+) meson decay constant 査読

    A. Zupanc, I. Adachi, H. Aihara, K. Arinstein, D. M. Asner, T. Aushev, A. M. Bakich, A. Bala, B. Bhuyan, G. Bonvicini, A. Bozek, M. Bracko, J. Brodzicka, T. E. Browder, M. -C. Chang, P. Chang, V. Chekelian, A. Chen, P. Chen, B. G. Cheon, K. Chilikin, R. Chistov, K. Cho, V. Chobanova, S. -K. Choi, Y. Choi, D. Cinabro, J. Dalseno, M. Danilov, Z. Dolezal, Z. Drasal, D. Dutta, S. Eidelman, H. Farhat, J. E. Fast, T. Ferber, V. Gaur, N. Gabyshev, S. Ganguly, R. Gillard, Y. M. Goh, B. Golob, J. Haba, T. Hara, K. Hayasaka, H. Hayashii, Y. Horii, Y. Hoshi, W. -S. Hou, Y. B. Hsiung, H. J. Hyun, T. Iijima, K. Inami, A. Ishikawa, R. Itoh, Y. Iwasaki, T. Iwashita, I. Jaegle, T. Julius, E. Kato, H. Kawai, T. Kawasaki, H. Kichimi, C. Kiesling, D. Y. Kim, H. O. Kim, J. B. Kim, J. H. Kim, M. J. Kim, Y. J. Kim, K. Kinoshita, J. Klucar, B. R. Ko, P. Kodys, S. Korpar, P. Krizan, P. Krokovny, B. Kronenbitter, T. Kuhr, T. Kumita, A. Kuzmin, Y. -J. Kwon, J. S. Lange, S. -H. Lee, J. Li, J. Libby, Z. Q. Liu, D. Liventsev, P. Lukin, H. Miyata, R. Mizuk, G. B. Mohanty, A. Moll, R. Mussa, E. Nakano, M. Nakao, E. Nedelkovska, N. K. Nisar, S. Nishida, O. Nitoh, S. Ogawa, S. Okuno, G. Pakhlova, C. W. Park, H. Park, H. K. Park, T. K. Pedlar, R. Pestotnik, M. Petric, L. E. Piilonen, M. Prim, M. Ritter, M. Roehrken, A. Rostomyan, S. Ryu, H. Sahoo, T. Saito, Y. Sakai, S. Sandilya, L. Santelj, T. Sanuki, Y. Sato, V. Savinov, O. Schneider, G. Schnell, C. Schwanda, A. J. Schwartz, D. Semmler, K. Senyo, M. E. Sevior, M. Shapkin, C. P. Shen, T. -A. Shibata, J. -G. Shiu, B. Shwartz, A. Sibidanov, F. Simon, Y. -S. Sohn, A. Sokolov, E. Solovieva, M. Staric, M. Steder, T. Sumiyoshi, U. Tamponi, K. Tanida, G. Tatishvili, Y. Teramoto, K. Trabelsi, T. Tsuboyama, M. Uchida, T. Uglov, S. Uno, Y. Usov, S. E. Vahsen, C. Van Hulse, P. Vanhoefer, G. Varner, A. Vinokurova, V. Vorobyev, M. N. Wagner, C. H. Wang, M. -Z. Wang, P. Wang, X. L. Wang, M. Watanabe, Y. Watanabe, E. Won, Y. Yamashita, S. Yashchenko, Z. P. Zhang, V. Zhilich, V. Zhulanov

    JOURNAL OF HIGH ENERGY PHYSICS   2013 ( 9 )   2013年9月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:SPRINGER  

    We present measurements of absolute branching fractions of hadronic and leptonic D-s(+) decays to K-K+pi(+), ($) over bar (0) ($) over bar (+), eta pi(+), mu(+)nu(mu) and tau(+)nu(tau) and report a search for the leptonic D-s(+) -&gt; e(+) nu(e) decays. The results are obtained from a data sample of 913 fb(-1) collected at or near the gamma (4S) and gamma (5S) resonances with the Belle detector at the KEKB asymmetric- energy e(+)e(-) collider. The branching fractions of hadronic decays are measured to be
    B(D-s(+) -&gt; K-K+pi(+)) = (5.06 +/- 0: 15 +/- 0.21)%,
    B(D-s(+) -&gt; ($) over bar (0) ($) over bar (+)) = (2.95 +/- 0.11 +/- 0.09)%,
    B(D-s(+) -&gt; eta pi(+)) = (1.82 +/- 0.14 +/- 0.07)%,
    where the fi rst and second uncertainties are statistical and systematic, respectively. The branching fractions of leptonic decays are measured to be
    B(D-s(+) -&gt; mu(+)nu(mu)) = (0.531 +/- 0.028 +/- 0.020)%,
    B(D-s(+) -&gt; tau(+)nu(tau)) = (5.70 +/- 0.21(-0.30)(+0.31))%,
    which are combined to determine the D-s(+) meson decay constant
    fD(s) = (255.5 +/- 4.2 +/- 5.1) MeV.
    We find no significant signal for D-s(+) -&gt; e(+)nu(e) decays and set an upper limit of B(D-s(+) -&gt; e(+)nu(e)) &lt; 1.0(0.83) +/- 10(-4) at 95% (90%) con fi dence level.

    DOI: 10.1007/JHEP09(2013)139

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    その他リンク: http://orcid.org/0000-0002-1018-219X

  • Precision measurement of charged pion and kaon differential cross sections in e<sup>+</sup>e<sup>-</sup> annihilation at √s=10.52 GeV 査読

    M. Leitgab, R. Seidl, M. Grosse Perdekamp, A. Vossen, I. Adachi, H. Aihara, D. M. Asner, V. Aulchenko, T. Aushev, A. M. Bakich, B. Bhuyan, A. Bondar, A. Bozek, M. Bračko, J. Brodzicka, T. E. Browder, V. Chekelian, A. Chen, P. Chen, B. G. Cheon, K. Chilikin, K. Cho, V. Chobanova, Y. Choi, D. Cinabro, J. Dalseno, Z. Drásal, D. Dutta, S. Eidelman, D. Epifanov, H. Farhat, J. E. Fast, V. Gaur, N. Gabyshev, R. Gillard, F. Giordano, Y. M. Goh, B. Golob, J. Haba, K. Hayasaka, H. Hayashii, Y. Hoshi, W. S. Hou, Y. B. Hsiung, H. J. Hyun, T. Iijima, A. Ishikawa, R. Itoh, W. W. Jacobs, T. Julius, J. H. Kang, P. Kapusta, E. Kato, T. Kawasaki, H. J. Kim, H. O. Kim, J. B. Kim, J. H. Kim, M. J. Kim, J. Klucar, B. R. Ko, P. Kodyš, R. T. Kouzes, P. Križan, P. Krokovny, R. Kumar, T. Kumita, Y. J. Kwon, J. S. Lange, S. H. Lee, Y. Li, Z. Q. Liu, D. Liventsev, D. Matvienko, K. Miyabayashi, H. Miyata, R. Mizuk, A. Moll, N. Muramatsu, E. Nakano, M. Nakao, Z. Natkaniec, M. Nayak, E. Nedelkovska, C. Ng, N. K. Nisar, O. Nitoh, A. Ogawa, S. Ogawa, T. Ohshima, S. Okuno, S. L. Olsen, C. Oswald, P. Pakhlov, H. Park, H. K. Park, T. K. Pedlar, R. Pestotnik, M. Petrič, L. E. Piilonen

    Physical Review Letters   111 ( 6 )   062002-1 - 062002-7   2013年8月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    Measurements of inclusive differential cross sections for charged pion and kaon production in e+e- annihilation have been carried out at a center-of-mass energy of √s=10.52 GeV. The measurements were performed with the Belle detector at the KEKB e+e- collider using a data sample containing 113×106 e+e -→qq̄ events, where q={u,d,s,c}. We present charge-integrated differential cross sections dσh±/dz for h±={π±,K±} as a function of the relative hadron energy z=2Eh/√s from 0.2 to 0.98. The combined statistical and systematic uncertainties for π± (K±) are 4% (4%) at z∼0.6 and 15% (24%) at z∼0.9. The cross sections are the first measurements of the z dependence of pion and kaon production for z>0.7 as well as the first precision cross section measurements at a center-of-mass energy far below the Z0 resonance used by the experiments at LEP and SLC. © 2013 American Physical Society.

    DOI: 10.1103/PhysRevLett.111.062002

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  • Measurement of exclusive Upsilon(1S) and Upsilon(2S) decays into vector-pseudoscalar final states 査読

    C. P. Shen, C. Z. Yuan, I. Adachi, H. Aihara, D. M. Asner, V. Aulchenko, A. M. Bakich, A. Bala, B. Bhuyan, M. Bischofberger, A. Bozek, M. Bracko, T. E. Browder, V. Chekelian, A. Chen, P. Chen, B. G. Cheon, K. Chilikin, I. -S. Cho, K. Cho, V. Chobanova, Y. Choi, D. Cinabro, J. Dalseno, M. Danilov, J. Dingfelder, Z. Dolezal, Z. Drasal, A. Drutskoy, D. Dutta, K. Dutta, S. Eidelman, D. Epifanov, H. Farhat, J. E. Fast, T. Ferber, A. Frey, V. Gaur, N. Gabyshev, S. Ganguly, R. Gillard, Y. M. Goh, B. Golob, J. Haba, T. Hara, K. Hayasaka, H. Hayashii, Y. Hoshi, W. -S. Hou, H. J. Hyun, T. Iijima, A. Ishikawa, R. Itoh, Y. Iwasaki, T. Julius, D. H. Kah, J. H. Kang, E. Kato, T. Kawasaki, C. Kiesling, D. Y. Kim, H. J. Kim, J. B. Kim, J. H. Kim, K. T. Kim, Y. J. Kim, K. Kinoshita, J. Klucar, B. R. Ko, P. Kodys, S. Korpar, P. Krizan, P. Krokovny, T. Kumita, A. Kuzmin, Y. -J. Kwon, S. -H. Lee, R. Leitner, J. Li, Y. Li, J. Libby, C. Liu, Y. Liu, Z. Q. Liu, D. Liventsev, P. Lukin, D. Matvienko, K. Miyabayashi, H. Miyata, G. B. Mohanty, A. Moll, T. Mori, N. Muramatsu, R. Mussa, Y. Nagasaka, E. Nakano, M. Nakao, Z. Natkaniec, M. Nayak, E. Nedelkovska, C. Ng, N. K. Nisar, S. Nishida, O. Nitoh, S. Ogawa, S. Okuno, S. L. Olsen, W. Ostrowicz, P. Pakhlov, C. W. Park, H. Park, H. K. Park, T. K. Pedlar, T. Peng, R. Pestotnik, M. Petric, L. E. Piilonen, M. Ritter, M. Roehrken, A. Rostomyan, S. Ryu, H. Sahoo, T. Saito, Y. Sakai, S. Sandilya, L. Santelj, T. Sanuki, Y. Sato, V. Savinov, O. Schneider, G. Schnell, C. Schwanda, K. Senyo, O. Seon, M. Shapkin, V. Shebalin, T. -A. Shibata, J. -G. Shiu, B. Shwartz, A. Sibidanov, F. Simon, P. Smerkol, Y. -S. Sohn, A. Sokolov, E. Solovieva, S. Stanic, M. Staric, M. Steder, M. Sumihama, T. Sumiyoshi, U. Tamponi, K. Tanida, G. Tatishvili, Y. Teramoto, T. Tsuboyama, M. Uchida, S. Uehara, Y. Unno, S. Uno, P. Urquijo, S. E. Vahsen, C. Van Hulse, P. Vanhoefer, G. Varner, V. Vorobyev, M. N. Wagner, C. H. Wang, P. Wang, X. L. Wang, M. Watanabe, Y. Watanabe, E. Won, H. Yamamoto, J. Yamaoka, Y. Yamashita, S. Yashchenko, Y. Yook, Y. Yusa, C. C. Zhang, Z. P. Zhang, V. Zhilich, A. Zupanc

    PHYSICAL REVIEW D   88 ( 1 )   011102-1 - 011102-8   2013年7月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    Using samples of 102 million Upsilon(1S) and 158 million Upsilon(2S) events collected with the Belle detector, we study exclusive hadronic decays of these two bottomonium resonances to (KSK+)-K-0 pi(-) and charge-conjugate (c.c.) states, pi(+) pi(-) pi(0) pi(0), and pi(+) pi(-) pi(0), and to the two-body Vector-Pseudoscalar (K*(892)0 (K) over bar (0) + c.c., K*(892)K--(+) + c.c., omega pi(0), and rho pi) final states. For the first time, signals are observed in the modes Upsilon(1S) -&gt; K-S(0) K+ pi(-) + c.c., pi(+) pi(-) pi(0) pi(0), and Upsilon(2S) -&gt; pi(+) pi(-) pi(0) pi(0), and evidence is found for the modes Upsilon(1S) -&gt; pi(+) pi(-) pi(0), K-*(892)(0)(K) over bar (0) + c.c., and Upsilon(2S) -&gt; K-S(0) K+ pi(-) + c.c. Branching fractions are measured for all the processes, while 90% confidence level upper limits on the branching fractions are also set for the modes with a statistical significance of less than 3 sigma. The ratios of the branching fractions of Upsilon(2S) and Upsilon(1S) decays into the same final state are used to test a perturbative QCD prediction for Okubo-Zweig-Iizuka- suppressed bottomonium decays.

    DOI: 10.1103/PhysRevD.88.011102

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  • Search for B→h(*) νν̄ with the full Belle Υ(4S) data sample 査読

    O. Lutz, S. Neubauer, M. Heck, T. Kuhr, A. Zupanc, I. Adachi, H. Aihara, D. M. Asner, T. Aushev, T. Aziz, A. M. Bakich, K. Belous, V. Bhardwaj, B. Bhuyan, A. Bondar, G. Bonvicini, A. Bozek, M. Bračko, T. E. Browder, P. Chang, V. Chekelian, A. Chen, P. Chen, B. G. Cheon, R. Chistov, K. Cho, V. Chobanova, Y. Choi, D. Cinabro, J. Dalseno, M. Danilov, Z. Doležal, Z. Drásal, D. Dutta, S. Eidelman, D. Epifanov, H. Farhat, J. E. Fast, M. Feindt, V. Gaur, N. Gabyshev, S. Ganguly, R. Gillard, Y. M. Goh, B. Golob, J. Haba, T. Hara, K. Hayasaka, H. Hayashii, Y. Hoshi, W. S. Hou, Y. B. Hsiung, H. J. Hyun, T. Iijima, A. Ishikawa, R. Itoh, Y. Iwasaki, T. Julius, J. H. Kang, P. Kapusta, E. Kato, T. Kawasaki, C. Kiesling, H. J. Kim, H. O. Kim, J. B. Kim, J. H. Kim, K. T. Kim, M. J. Kim, K. Kinoshita, J. Klucar, B. R. Ko, P. Kodyš, S. Korpar, R. T. Kouzes, P. Križan, P. Krokovny, B. Kronenbitter, T. Kumita, A. Kuzmin, Y. J. Kwon, J. S. Lange, S. H. Lee, Y. Li, C. Liu, Y. Liu, D. Liventsev, D. Matvienko, K. Miyabayashi, H. Miyata, G. B. Mohanty, A. Moll, T. Müller, N. Muramatsu, E. Nakano, M. Nakao, Z. Natkaniec, M. Nayak, E. Nedelkovska, C. Ng

    Physical Review D - Particles, Fields, Gravitation and Cosmology   87 ( 11 )   111103-1 - 111103-7   2013年6月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    We report a search for the rare decays B→h(*) νν̄, where h(z.ast;) stands for K+, KS0, K*+, K*0, π+, π0, ρ+, ρ0 and p. The results are obtained from a 711 fb-1 data sample that contains 772×106BB̄ pairs collected at the Υ(4S) resonance with the Belle detector at the KEKB e+e- collider. We search for signal candidates by fully reconstructing a hadronic decay of the accompanying B meson and requiring a single h(*) meson left on the signal side. No significant signal is observed and we set upper limits on the branching fractions at 90% confidence level. The measurements of B+→K *+νν̄, B+→π +νν̄, B0→π0νν̄ and B0→ρ0ν ν̄ provide the world's currently most restrictive limits. © 2013 American Physical Society.

    DOI: 10.1103/PhysRevD.87.111103

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  • Study of e(+)e(-) -&gt; pi(+)pi(-) J/psi and Observation of a Charged Charmoniumlike State at Belle 査読

    Z. Q. Liu, C. P. Shen, C. Z. Yuan, I. Adachi, H. Aihara, D. M. Asner, V. Aulchenko, T. Aushev, T. Aziz, A. M. Bakich, A. Bala, K. Belous, V. Bhardwaj, B. Bhuyan, M. Bischofberger, A. Bondar, G. Bonvicini, A. Bozek, M. Bracko, J. Brodzicka, T. E. Browder, P. Chang, V. Chekelian, A. Chen, P. Chen, B. G. Cheon, R. Chistov, K. Cho, V. Chobanova, S-K. Choi, Y. Choi, D. Cinabro, J. Dalseno, M. Danilov, Z. Dolezal, Z. Drasal, A. Drutskoy, D. Dutta, K. Dutta, S. Eidelman, D. Epifanov, H. Farhat, J. E. Fast, M. Feindt, T. Ferber, A. Frey, V. Gaur, N. Gabyshev, S. Ganguly, R. Gillard, Y. M. Goh, B. Golob, J. Haba, K. Hayasaka, H. Hayashii, Y. Horii, Y. Hoshi, W-S. Hou, Y. B. Hsiung, H. J. Hyun, T. Iijima, K. Inami, A. Ishikawa, R. Itoh, Y. Iwasaki, D. Joffe, T. Julius, D. H. Kah, J. H. Kang, T. Kawasaki, C. Kiesling, H. J. Kim, J. B. Kim, J. H. Kim, K. T. Kim, M. J. Kim, Y. J. Kim, K. Kinoshita, J. Klucar, B. R. Ko, P. Kodys, S. Korpar, P. Krizan, P. Krokovny, T. Kuhr, Y-J. Kwon, J. S. Lange, S-H. Lee, J. Li, Y. Li, J. Libby, C. Liu, P. Lukin, D. Matvienko, K. Miyabayashi, H. Miyata, R. Mizuk, G. B. Mohanty, A. Moll, R. Mussa, E. Nakano, M. Nakao, H. Nakazawa, Z. Natkaniec, M. Nayak, E. Nedelkovska, N. K. Nisar, S. Nishida, O. Nitoh, S. Ogawa, S. Okuno, S. L. Olsen, Y. Onuki, W. Ostrowicz, C. Oswald, P. Pakhlov, G. Pakhlova, H. Park, H. K. Park, T. K. Pedlar, R. Pestotnik, M. Petric, L. E. Piilonen, M. Ritter, M. Roehrken, A. Rostomyan, H. Sahoo, T. Saito, Y. Sakai, S. Sandilya, D. Santel, T. Sanuki, Y. Sato, V. Savinov, O. Schneider, G. Schnell, C. Schwanda, R. Seidl, D. Semmler, K. Senyo, O. Seon, M. E. Sevior, M. Shapkin, T-A. Shibata, J-G. Shiu, B. Shwartz, A. Sibidanov, F. Simon, P. Smerkol, Y-S. Sohn, A. Sokolov, E. Solovieva, M. Staric, M. Steder, M. Sumihama, T. Sumiyoshi, U. Tamponi, K. Tanida, G. Tatishvili, Y. Teramoto, K. Trabelsi, T. Tsuboyama, M. Uchida, S. Uehara, T. Uglov, Y. Unno, S. Uno, S. E. Vahsen, C. Van Hulse, P. Vanhoefer, G. Varner, K. E. Varvell, V. Vorobyev, M. N. Wagner, C. H. Wang, M-Z. Wang, P. Wang, X. L. Wang, M. Watanabe, Y. Watanabe, E. Won, B. D. Yabsley, J. Yamaoka, Y. Yamashita, S. Yashchenko, Y. Yook, Y. Yusa, C. C. Zhang, Z. P. Zhang, V. Zhilich, A. Zupanc

    PHYSICAL REVIEW LETTERS   110 ( 25 )   252002-1 - 252002-7   2013年6月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    The cross section for e(+)e(-) -&gt; pi(+)pi(-) J/psi between 3.8 and 5.5 GeV is measured with a 967 fb(-1) data sample collected by the Belle detector at or near the Upsilon(nS) (n = 1, 2, . . . , 5) resonances. The Y(4260) state is observed, and its resonance parameters are determined. In addition, an excess of pi(+)pi(-) J/psi production around 4 GeV is observed. This feature can be described by a Breit-Wigner parametrization with properties that are consistent with the Y(4008) state that was previously reported by Belle. In a study of Y(4260) -&gt; pi(+)pi(-) J/psi decays, a structure is observed in the M(pi(+/-) J/psi) mass spectrum with 5.2 sigma significance, with mass M = (3894.5 +/- 6.6 +/- 4.5) MeV/c(2) and width Gamma = (63 +/- 24 +/- 26) MeV/c(2), where the errors are statistical and systematic, respectively. This structure can be interpreted as a new charged charmoniumlike state.

    DOI: 10.1103/PhysRevLett.110.252002

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  • Search for an H-Dibaryon with a Mass near 2m<inf>Λ</inf> in Υ(1S) and Υ(2S) Decays 査読

    B. H. Kim, S. L. Olsen, I. Adachi, H. Aihara, D. M. Asner, V. Aulchenko, A. Bay, K. Belous, B. Bhuyan, G. Bonvicini, A. Bozek, M. Bračko, T. E. Browder, V. Chekelian, A. Chen, B. G. Cheon, K. Chilikin, R. Chistov, I. S. Cho, K. Cho, V. Chobanova, S. K. Choi, Y. Choi, D. Cinabro, J. Dalseno, Z. Doležal, S. Eidelman, D. Epifanov, S. Esen, H. Farhat, J. E. Fast, V. Gaur, S. Ganguly, R. Gillard, Y. M. Goh, K. Hayasaka, H. Hayashii, Y. Hoshi, W. S. Hou, Y. B. Hsiung, H. J. Hyun, K. Inami, A. Ishikawa, R. Itoh, Y. Iwasaki, T. Julius, D. H. Kah, J. H. Kang, P. Kapusta, E. Kato, H. Kichimi, H. J. Kim, H. O. Kim, J. H. Kim, K. T. Kim, M. J. Kim, S. K. Kim, Y. J. Kim, K. Kinoshita, J. Klucar, B. R. Ko, P. Kodyš, S. Korpar, R. T. Kouzes, P. Križan, P. Krokovny, T. Kumita, A. Kuzmin, Y. J. Kwon, J. S. Lange, S. H. Lee, J. Li, X. Li, Y. Li, J. Libby, D. Liventsev, D. Matvienko, K. Miyabayashi, H. Miyata, R. Mizuk, G. B. Mohanty, A. Moll, N. Muramatsu, R. Mussa, E. Nakano, M. Nakao, E. Nedelkovska, C. Ng, N. K. Nisar, S. Nishida, K. Nishimura, T. Ohshima, S. Okuno, P. Pakhlov, G. Pakhlova, H. Park, H. K. Park, M. Peters, M. Petrič, L. E. Piilonen

    Physical Review Letters   110 ( 22 )   222002-1 - 222002-6   2013年5月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    We report the results of a high-statistics search for H dibaryon production in inclusive Υ(1S) and Υ(2S) decays. No indication of an H dibaryon with a mass near the MH=2mΛ threshold is seen in either the H→Λpπ- or ΛΛ decay channels and 90% confidence level branching-fraction upper limits are set that are between one and two orders of magnitude below the measured branching fractions for inclusive Υ(1S) and Υ(2S) decays to antideuterons. Since Υ(1S,2S) decays produce flavor-SU(3)-symmetric final states, these results put stringent constraints on H dibaryon properties. The results are based on analyses of 102 million Υ(1S) and 158 million Υ(2S) events collected with the Belle detector at the KEKB e+e- collider. © 2013 American Physical Society.

    DOI: 10.1103/PhysRevLett.110.222002

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  • Measurement of the inclusive semileptonic branching fraction B(Bs0→X<sup>-</sup>ℓ<sup>+</sup>ν<inf>ℓ</inf>) at Belle 査読

    C. Oswald, P. Urquijo, J. Dingfelder, I. Adachi, H. Aihara, K. Arinstein, D. M. Asner, T. Aushev, A. M. Bakich, K. Belous, V. Bhardwaj, B. Bhuyan, A. Bondar, G. Bonvicini, A. Bozek, M. Bračko, T. E. Browder, P. Chang, V. Chekelian, A. Chen, P. Chen, B. G. Cheon, K. Chilikin, R. Chistov, K. Cho, V. Chobanova, S. K. Choi, Y. Choi, D. Cinabro, J. Dalseno, Z. Doležal, Z. Drásal, A. Drutskoy, D. Dutta, S. Eidelman, S. Esen, H. Farhat, J. E. Fast, V. Gaur, N. Gabyshev, S. Ganguly, R. Gillard, Y. M. Goh, B. Golob, J. Haba, K. Hayasaka, H. Hayashii, Y. Horii, Y. Hoshi, W. S. Hou, H. J. Hyun, T. Iijima, A. Ishikawa, R. Itoh, Y. Iwasaki, D. H. Kah, J. H. Kang, E. Kato, T. Kawasaki, C. Kiesling, H. J. Kim, H. O. Kim, J. B. Kim, K. T. Kim, M. J. Kim, Y. J. Kim, K. Kinoshita, J. Klucar, B. R. Ko, S. Korpar, R. T. Kouzes, P. Križan, P. Krokovny, B. Kronenbitter, T. Kuhr, T. Kumita, Y. J. Kwon, S. H. Lee, J. Li, Y. Li, J. Libby, C. Liu, Y. Liu, Z. Q. Liu, D. Liventsev, R. Louvot, O. Lutz, D. Matvienko, K. Miyabayashi, H. Miyata, R. Mizuk, G. B. Mohanty, A. Moll, N. Muramatsu, Y. Nagasaka, E. Nakano, M. Nakao, E. Nedelkovska, N. K. Nisar, S. Nishida

    Physical Review D - Particles, Fields, Gravitation and Cosmology   87 ( 7 )   072008-1 - 072008-10   2013年4月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    We report a measurement of the inclusive semileptonic Bs0 branching fraction in a 121 fb-1 data sample collected near the Υ(5S) resonance with the Belle detector at the KEKB asymmetric energy e +e- collider. Events containing Bs0(*) B̄s0(*) pairs are selected by reconstructing a tag side Ds+ and identifying a signal side lepton ℓ+ (ℓ=e, μ) that is required to have the same-sign charge to ensure that both originate from different Bs0 mesons. The Bs0→X -ℓ+νℓ branching fraction is extracted from the ratio of the measured yields of Ds+ mesons and Ds+ℓ+ pairs and the known production and branching fractions. The inclusive semileptonic branching fraction is measured to be [10.6±0.5(stat)±0.7(syst)]%. © 2013 American Physical Society.

    DOI: 10.1103/PhysRevD.87.072008

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  • Search for heavy neutrinos at Belle 査読

    D. Liventsev, I. Adachi, H. Aihara, K. Arinstein, D. M. Asner, V. Aulchenko, T. Aushev, A. M. Bakich, A. Bay, K. Belous, B. Bhuyan, A. Bondar, G. Bonvicini, A. Bozek, M. Bracko, T. E. Browder, P. Chang, V. Chekelian, A. Chen, B. G. Cheon, R. Chistov, K. Cho, V. Chobanova, S. -K. Choi, Y. Choi, D. Cinabro, J. Dalseno, Z. Dolezal, Z. Drasal, A. Drutskoy, D. Dutta, S. Eidelman, D. Epifanov, S. Esen, H. Farhat, J. E. Fast, V. Gaur, N. Gabyshev, S. Ganguly, R. Gillard, Y. M. Goh, B. Golob, J. Haba, K. Hayasaka, H. Hayashii, Y. Horii, Y. Hoshi, W. -S. Hou, H. J. Hyun, T. Iijima, A. Ishikawa, K. Itagaki, R. Itoh, Y. Iwasaki, T. Julius, D. H. Kah, J. H. Kang, E. Kato, T. Kawasaki, C. Kiesling, H. J. Kim, H. O. Kim, J. B. Kim, K. T. Kim, M. J. Kim, Y. J. Kim, J. Klucar, B. R. Ko, S. Korpar, R. T. Kouzes, P. Krizan, P. Krokovny, T. Kuhr, R. Kumar, T. Kumita, A. Kuzmin, Y. -J. Kwon, S. -H. Lee, J. Li, Y. Li, J. Libby, C. Liu, Y. Liu, Z. Q. Liu, R. Louvot, D. Matvienko, K. Miyabayashi, H. Miyata, R. Mizuk, G. B. Mohanty, A. Moll, N. Muramatsu, Y. Nagasaka, E. Nakano, M. Nakao, Z. Natkaniec, N. K. Nisar, S. Nishida, O. Nitoh, T. Nozaki, S. Ogawa, T. Ohshima, S. Okuno, S. L. Olsen, W. Ostrowicz, C. Oswald, P. Pakhlov, G. Pakhlova, H. Park, H. K. Park, T. K. Pedlar, R. Pestotnik, M. Petric, L. E. Piilonen, K. Prothmann, M. Ritter, M. Roehrken, S. Ryu, H. Sahoo, T. Saito, Y. Sakai, S. Sandilya, D. Santel, L. Santelj, Y. Sato, O. Schneider, G. Schnell, C. Schwanda, K. Senyo, O. Seon, M. E. Sevior, M. Shapkin, C. P. Shen, T. -A. Shibata, J. -G. Shiu, B. Shwartz, A. Sibidanov, F. Simon, P. Smerkol, Y. -S. Sohn, A. Sokolov, E. Solovieva, M. Staric, M. Sumihama, T. Sumiyoshi, G. Tatishvili, Y. Teramoto, T. Tsuboyama, M. Uchida, S. Uehara, T. Uglov, Y. Unno, S. Uno, Y. Ushiroda, Y. Usov, C. Van Hulse, P. Vanhoefer, G. Varner, K. E. Varvell, V. Vorobyev, M. N. Wagner, C. H. Wang, M. -Z. Wang, P. Wang, M. Watanabe, Y. Watanabe, K. M. Williams, E. Won, B. D. Yabsley, H. Yamamoto, Y. Yamashita, C. C. Zhang, Z. P. Zhang, V. Zhilich, A. Zupanc

    PHYSICAL REVIEW D   87 ( 7 )   2013年4月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We report on a search for heavy neutrinos in B-meson decays. The results are obtained using a data sample that contains 772 x 10(6) B (B) over bar pairs collected at the Y(4S) resonance with the Belle detector at the KEKB asymmetric energy e(+)e(-) collider. No signal is observed and upper limits are set on mixing of heavy neutrinos with left-handed neutrinos of the Standard Model in the mass range 0.5-5.0 GeV/c(2). DOI: 10.1103/PhysRevD.87.071102

    DOI: 10.1103/PhysRevD.87.071102

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    その他リンク: http://orcid.org/0000-0002-1018-219X

  • Evidence for B-→τ-ν<inf>̄τ</inf> with a hadronic tagging method using the full data sample of belle 査読

    K. Hara, Y. Horii, T. Iijima, I. Adachi, H. Aihara, D. M. Asner, T. Aushev, T. Aziz, A. M. Bakich, M. Barrett, V. Bhardwaj, B. Bhuyan, A. Bondar, G. Bonvicini, A. Bozek, M. Bračko, T. E. Browder, V. Chekelian, A. Chen, P. Chen, B. G. Cheon, K. Chilikin, I. S. Cho, K. Cho, Y. Choi, D. Cinabro, J. Dalseno, J. Dingfelder, Z. Doležal, Z. Drásal, A. Drutskoy, D. Dutta, S. Eidelman, D. Epifanov, S. Esen, H. Farhat, A. Frey, V. Gaur, N. Gabyshev, S. Ganguly, R. Gillard, Y. M. Goh, B. Golob, J. Haba, T. Hara, K. Hayasaka, H. Hayashii, T. Higuchi, Y. Hoshi, K. Inami, A. Ishikawa, R. Itoh, Y. Iwasaki, T. Iwashita, T. Julius, J. H. Kang, T. Kawasaki, C. Kiesling, H. O. Kim, J. B. Kim, J. H. Kim, K. T. Kim, M. J. Kim, Y. J. Kim, K. Kinoshita, J. Klucar, B. R. Ko, P. Kodyš, S. Korpar, R. T. Kouzes, P. Križan, P. Krokovny, B. Kronenbitter, T. Kuhr, T. Kumita, A. Kuzmin, Y. J. Kwon, J. S. Lange, S. H. Lee, J. Li, Y. Li, J. Libby, C. Liu, Y. Liu, Z. Q. Liu, D. Liventsev, D. Matvienko, K. Miyabayashi, H. Miyata, R. Mizuk, G. B. Mohanty, A. Moll, T. Mori, N. Muramatsu, E. Nakano, M. Nakao, H. Nakazawa, Z. Natkaniec, M. Nayak, C. Ng

    Physical Review Letters   110 ( 13 )   131801-1 - 131801-6   2013年3月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    We measure the branching fraction of B-→τ -ν̄τ using the full Υ(4S) data sample containing 772×106 BB̄ pairs collected with the Belle detector at the KEKB asymmetric-energy e+e- collider. Events with BB̄ pairs are tagged by reconstructing one of the B mesons decaying into hadronic final states, and B-→τ -ν̄τ candidates are detected in the recoil. We find evidence for B-→τ -ν̄τ with a significance of 3.0 standard deviations including systematic errors and measure a branching fraction B(B -→τ-ν̄τ)=[0.72-0.25+0. 27(stat)±0.11(syst)]×10-4. © 2013 American Physical Society.

    DOI: 10.1103/PhysRevLett.110.131801

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  • Search for lepton-flavor and lepton-number-violating Τ→ℓhh' decay modes 査読

    Y. Miyazaki, K. Hayasaka, I. Adachi, H. Aihara, D. M. Asner, V. Aulchenko, T. Aushev, A. M. Bakich, A. Bay, V. Bhardwaj, B. Bhuyan, M. Bischofberger, A. Bozek, M. Bračko, T. E. Browder, M. C. Chang, A. Chen, P. Chen, B. G. Cheon, R. Chistov, K. Cho, Y. Choi, J. Dalseno, Z. Doležal, A. Drutskoy, S. Eidelman, D. Epifanov, J. E. Fast, V. Gaur, N. Gabyshev, A. Garmash, Y. M. Goh, J. Haba, H. Hayashii, Y. Horii, Y. Hoshi, W. S. Hou, H. J. Hyun, T. Iijima, K. Inami, A. Ishikawa, R. Itoh, M. Iwabuchi, Y. Iwasaki, T. Julius, J. H. Kang, C. Kiesling, H. J. Kim, H. O. Kim, K. T. Kim, M. J. Kim, Y. J. Kim, B. R. Ko, S. Koblitz, P. Kodyš, S. Korpar, P. Križan, P. Krokovny, A. Kuzmin, Y. J. Kwon, S. H. Lee, Y. Li, C. L. Lim, C. Liu, Z. Q. Liu, D. Liventsev, R. Louvot, D. Matvienko, S. McOnie, K. Miyabayashi, H. Miyata, R. Mizuk, G. B. Mohanty, A. Moll, N. Muramatsu, E. Nakano, M. Nakao, S. Nishida, K. Nishimura, O. Nitoh, S. Ogawa, T. Ohshima, S. Okuno, Y. Onuki, P. Pakhlov, G. Pakhlova, C. W. Park, H. K. Park, M. Petrič, L. E. Piilonen, M. Röhrken, S. Ryu, H. Sahoo, Y. Sakai, T. Sanuki, Y. Sato, O. Schneider, C. Schwanda, K. Senyo, O. Seon

    Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics   719 ( 4-5 )   346 - 353   2013年2月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    We search for lepton-flavor and lepton-number-violating. Τ decays into a lepton (ℓ= electron or muon) and two charged mesons (h,h'=π± or K±) using 854 fb<sup>-1</sup> of data collected with the Belle detector at the KEKB asymmetric-energy e<sup>+</sup>e<sup>-</sup> collider. We obtain 90% confidence level upper limits on the. Τ→ℓhh' branching fractions in the range. (2.0-8.4)×10<sup>-8</sup>. These results improve upon our previously published upper limits by factors of about 1.8 on average. © 2013 Elsevier B.V.

    DOI: 10.1016/j.physletb.2013.01.032

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  • Measurements of branching fractions and direct CP asymmetries for B -&gt; K pi, B -&gt; pi pi and B -&gt; KK decays 査読

    Y. -T. Duh, T. -Y. Wu, P. Chang, G. B. Mohanty, Y. Unno, I. Adachi, H. Aihara, D. M. Asner, V. Aulchenko, T. Aushev, T. Aziz, A. M. Bakich, B. Bhuyan, M. Bischofberger, A. Bondar, G. Bonvicini, A. Bozek, M. Bracko, T. E. Browder, Y. Chao, V. Chekelian, A. Chen, P. Chen, B. G. Cheon, R. Chistov, I. -S. Cho, K. Cho, V. Chobanova, Y. Choi, Z. Dolezal, A. Drutskoy, D. Dutta, S. Eidelman, H. Farhat, J. E. Fast, A. Frey, V. Gaur, R. Gillard, Y. M. Goh, B. Golob, J. Haba, K. Hayasaka, H. Hayashii, Y. Horii, Y. Hoshi, W. -S. Hou, Y. B. Hsiung, H. J. Hyun, T. Iijima, A. Ishikawa, T. Julius, J. H. Kang, P. Kapusta, T. Kawasaki, H. J. Kim, H. O. Kim, J. H. Kim, M. J. Kim, Y. J. Kim, K. Kinoshita, B. R. Ko, P. Kodys, S. Korpar, P. Krizan, P. Krokovny, T. Kuhr, R. Kumar, T. Kumita, A. Kuzmin, Y. -J. Kwon, S. -H. Lee, Y. Li, J. Libby, C. Liu, Y. Liu, K. Miyabayashi, H. Miyata, R. Mizuk, T. Mori, N. Muramatsu, E. Nakano, M. Nakao, C. Ng, S. Nishida, K. Nishimura, O. Nitoh, S. Ogawa, T. Ohshima, S. Okuno, S. L. Olsen, G. Pakhlova, H. Park, H. K. Park, T. K. Pedlar, R. Pestotnik, M. Petric, L. E. Piilonen, M. Prim, M. Ritter, M. Roehrken, S. Ryu, H. Sahoo, Y. Sakai, S. Sandilya, D. Santel, Y. Sato, O. Schneider, C. Schwanda, K. Senyo, M. E. Sevior, M. Shapkin, V. Shebalin, C. P. Shen, T. -A. Shibata, J. -G. Shiu, B. Shwartz, A. Sibidanov, F. Simon, P. Smerkol, Y. -S. Sohn, A. Sokolov, E. Solovieva, M. Staric, M. Sumihama, T. Sumiyoshi, G. Tatishvili, Y. Teramoto, K. Trabelsi, M. Uchida, S. Uehara, S. Uno, P. Vanhoefer, G. Varner, A. Vinokurova, C. H. Wang, M. -Z. Wang, M. Watanabe, K. M. Williams, E. Won, B. D. Yabsley, Y. Yamashita, Z. P. Zhang, V. Zhilich, V. Zhulanov, A. Zupanc

    PHYSICAL REVIEW D   87 ( 3 )   031103-1 - 031103-8   2013年2月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We report measurements of the branching fractions and direct CP asymmetries (A(CP)) for B -&gt; K pi, pi pi and KK decays (but not pi(0) pi(0)) based on the final data sample of 772 x 10(6) B (B) over bar pairs collected at the Y(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. We set a 90% confidence-level upper limit for K+K- at 2.0 x 10(-7); all other decays are observed with branching fractions ranging from 10(-6) to 10(-5). In the B-0/(B) over bar (0) -&gt; K-+/-pi(-/+) mode, we confirm Belle's previously reported large A(CP) with a value of -0.069 +/- 0.014 +/- 0.007 and a significance of 4.4 sigma. For all other flavor-specific modes, we find A(CP) values consistent with zero, including A(CP)(K+pi(0)) = +0.043 +/- 0.024 +/- 0.007 with 1.8 sigma significance. The difference of CP asymmetry between B-+/- -&gt; K-+/- pi(0) and B-0/(B) over bar (0) K-+/-pi(-/+) is found to be Delta A(K pi) equivalent to A(CP)(K+pi(0)) - A(CP)(K+pi(-)) = +0.112 +/- 0.027 +/- 0.007 with 4.0 sigma significance. We also calculate the ratios of partial widths for the B -&gt; K pi decays. Using our results, we test the validity of the sum rule A(CP)(K+pi(-)) + A(CP)(K-0 pi(+)) Gamma(K-0 pi(+))/Gamma(K+pi(-)) - A(CP)(K+pi(0))2 Gamma(K+pi(0))/Gamma(K+pi(-)) - A(CP)(K-0 pi(0))2 Gamma(K-0 pi(0))/Gamma(K+pi(-)) =0 and obtain a sum of -0.270 +/- 0.132 +/- 0.060 with 1:9 sigma significance. DOI: 10.1103/PhysRevD.87.031103

    DOI: 10.1103/PhysRevD.87.031103

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  • Search for CP violation in the decay D<sup>+</sup> → K <inf>S</inf><sup>0</sup>K<sup>+</sup> 査読

    Ko B.R, Won E, Adachi I, Aihara H, Arinstein K, Asner D.M, Aushev T, Bakich A.M, Belous K, Bhardwaj V, Bhuyan B, Bondar A, Bonvicini G, Bozek A, Bra?ko M, Browder T.E, Chekelian V, Chen A, Chen P, Cheon B.G, Chilikin K, Chistov R, Cho K, Choi S.-K, Choi Y, Cinabro D, Dalseno J, Dole?al Z, Dutta D, Eidelman S, Esen S, Farhat H, Fast J.E, Gaur V, Gabyshev N, Ganguly S, Gillard R, Goh Y.M, Golob B, Hayasaka K, Hayashii H, Hoshi Y, Hou W.-S, Hyun H.J, Iijima T, Ishikawa A, Iwasaki Y, Julius T, Kang J.H, Kato E, Kiesling C, Kim H.O, Kim J.B, Kim K.T, Kim M.J, Kim Y.J, Kinoshita K, Klucar J, Korpar S, Kouzes R.T, Kri?an P, Krokovny P, Kuhr T, Kumita T, Kuzmin A, Kwon Y.-J, Li Y, Liu C, Liventsev D, Louvot R, Miyabayashi K, Miyata H, Mizuk R, Mohanty G.B, Moll A, Muramatsu N, Nagasaka Y, Nakano E, Nakao M, Nedelkovska E, Ng C, Nellikunnummel N, Nishida S, Nishimura K, Nitoh O, Ogawa S, Ohshima T, Okuno S, Oswald C, Pakhlov P, Pakhlova G, Park H, Park H.K, Pedlar T.K, Pestotnik R, Petri? M, Piilonen L.E, Prothmann K, Ritter M, R{\"o}hrken M, Sahoo H, Saito T, Sakai Y, Sandilya S, Santelj L, Sanuki T, Sato Y, Schneider O, Schnell G, Schwanda C, Schwartz A.J, Senyo K, Seon O, Sevior M.E, Shapkin M, Shen C.P, Shibata T.-A, Shiu J.-G, Sibidanov A, Simon F, Smerkol P, Sohn Y.-S, Solovieva E, Stari? M, Sumiyoshi T, Tatishvili G, Teramoto Y, Trabelsi K, Tsuboyama T, Uchida M, Uglov T, Unno Y, Uno S, Van Hulse C, Vanhoefer P, Varner G, Wang C.H, Wang M.-Z, Wang P, Watanabe Y, Williams K.M, Yamashita Y, Zhang C.C, Zhilich V, Zupanc A

    Journal of High Energy Physics   2013 ( 2 )   1 - 12   2013年2月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.1007/JHEP02(2013)098

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    その他リンク: http://orcid.org/0000-0001-6373-2346

  • Study of the hadronic transitions ${\Upsilon}(2{S}){\rightarrow}({\eta},{ { \pi } }^{0}){\Upsilon}(1{S})$ at Belle 査読

    The Belle collaboration, K, Hayasaka は

    Phys. Rev. D   87 ( 1 )   011104-1 - 011104-6   2013年1月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.1103/PhysRevD.87.011104

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  • Study of the hadronic transitions Y(2S) -&gt; (eta, pi(0))Y(1S) at Belle 査読

    U. Tamponi, R. Mussa, I. Adachi, H. Aihara, D. M. Asner, V. Aulchenko, T. Aushev, A. M. Bakich, M. Barrett, B. Bhuyan, A. Bondar, A. Bozek, M. Bracko, T. E. Browder, A. Chen, P. Chen, B. G. Cheon, K. Chilikin, I-S Cho, K. Cho, Y. Choi, J. Dalseno, Z. Dolezal, Z. Drasal, D. Dutta, S. Eidelman, D. Epifanov, S. Esen, H. Farhat, J. E. Fast, A. Frey, V. Gaur, R. Gillard, Y. M. Goh, B. Golob, K. Hayasaka, Y. Horii, Y. Hoshi, H. J. Hyun, T. Iijima, A. Ishikawa, Y. Iwasaki, I. Jaegle, J. H. Kang, T. Kawasaki, H. O. Kim, J. H. Kim, K. T. Kim, M. J. Kim, Y. J. Kim, J. Klucar, B. R. Ko, P. Kodys, S. Korpar, R. T. Kouzes, P. Krizan, P. Krokovny, T. Kumita, A. Kuzmin, S-H Lee, Y. Li, C. Liu, Y. Liu, Z. Q. Liu, D. Liventsev, H. Miyata, R. Mizuk, G. B. Mohanty, A. Moll, N. Muramatsu, M. Nakao, Z. Natkaniec, C. Ng, S. Nishida, O. Nitoh, S. Ogawa, T. Ohshima, S. Okuno, S. L. Olsen, Y. Onuki, P. Pakhlov, H. K. Park, K. S. Park, T. K. Pedlar, R. Pestotnik, M. Petric, L. E. Piilonen, M. Roehrken, Y. Sakai, S. Sandilya, D. Santel, L. Santelj, T. Sanuki, O. Schneider, G. Schnell, C. Schwanda, K. Senyo, C. P. Shen, T-A Shibata, J-G Shiu, B. Shwartz, F. Simon, P. Smerkol, Y-S Sohn, A. Sokolov, E. Solovieva, M. Staric, T. Sumiyoshi, K. Tanida, N. Taniguchi, G. Tatishvili, Y. Teramoto, K. Trabelsi, S. Uehara, S. Uno, C. Van Hulse, P. Vanhoefer, G. Varner, C. H. Wang, M-Z Wang, P. Wang, X. L. Wang, M. Watanabe, Y. Watanabe, K. M. Williams, E. Won, B. D. Yabsley, Y. Yamashita, C. Z. Yuan, Z. P. Zhang, V. Zhilich, V. Zhulanov, A. Zupanc

    PHYSICAL REVIEW D   87 ( 1 )   011104   2013年1月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We study the rare hadronic transitions Y(2S) -&gt; Y(1S)eta and Y(2S) -&gt; Y(1S)pi(0) using a sample of 158 x 10(6)Y(2S) decays collected with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. We measure the ratios of branching fractions (B) B(Y(2S)-&gt; Y(1S)eta)/B(Y(2S)-&gt; Y(1S)pi(+)pi(-)) = (1.99 +/- 0.14(stat) +/- 0.11(syst) x 10(-3) and B(Y(2S)-&gt; Y(1S)pi(0))/B(Y(2S)-&gt; Y(1S)pi(+)pi(-)) &lt; 2.3 x 10(-4) at the 90% confidence level (CL). Assuming the value B(Y(2S)-&gt; Y(1S)pi(-)pi(+)) = (17.92 +/- 0.26)%, we obtain B(Y(2S)-&gt; Y(1S)eta) = (3.57 +/- 0.25(stat) +/- 0.21(syst)) x 10(-4) and Y(2S) -&gt; Y(1S)pi(0) &lt; 4.1 x 10(-5)(90%CL). DOI: 10.1103/PhysRevD.87.011104

    DOI: 10.1103/PhysRevD.87.011104

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  • Search for CP violation in the decay D<sup>+</sup> → K <inf>S</inf><sup>0</sup>K<sup>+</sup> 査読

    B. R. Ko, E. Won, I. Adachi, H. Aihara, K. Arinstein, D. M. Asner, T. Aushev, A. M. Bakich, K. Belous, V. Bhardwaj, B. Bhuyan, A. Bondar, G. Bonvicini, A. Bozek, M. Bračko, T. E. Browder, V. Chekelian, A. Chen, P. Chen, B. G. Cheon, K. Chilikin, R. Chistov, K. Cho, S. K. Choi, Y. Choi, D. Cinabro, J. Dalseno, Z. Doležal, D. Dutta, S. Eidelman, S. Esen, H. Farhat, J. E. Fast, V. Gaur, N. Gabyshev, S. Ganguly, R. Gillard, Y. M. Goh, B. Golob, K. Hayasaka, H. Hayashii, Y. Hoshi, W. S. Hou, H. J. Hyun, T. Iijima, A. Ishikawa, Y. Iwasaki, T. Julius, J. H. Kang, E. Kato, C. Kiesling, H. O. Kim, J. B. Kim, K. T. Kim, M. J. Kim, Y. J. Kim, K. Kinoshita, J. Klucar, S. Korpar, R. T. Kouzes, P. Križan, P. Krokovny, T. Kuhr, T. Kumita, A. Kuzmin, Y. J. Kwon, Y. Li, C. Liu, D. Liventsev, R. Louvot, K. Miyabayashi, H. Miyata, R. Mizuk, G. B. Mohanty, A. Moll, N. Muramatsu, Y. Nagasaka, E. Nakano, M. Nakao, E. Nedelkovska, C. Ng, N. Nellikunnummel, S. Nishida, K. Nishimura, O. Nitoh, S. Ogawa, T. Ohshima, S. Okuno, C. Oswald, P. Pakhlov, G. Pakhlova, H. Park, H. K. Park, T. K. Pedlar, R. Pestotnik, M. Petrič, L. E. Piilonen, K. Prothmann, M. Ritter, M. Röhrken

    Journal of High Energy Physics   2013 ( 2 )   1 - 12   2013年

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    掲載種別:研究論文(学術雑誌)  

    We search for CP violation in the decay D+ → K S0K+ using a data sample with an integrated luminosity of 977 fb-1 collected with the Belle detector at the KEKB e+ e- asymmetric-energy collider. No CP violation has been observed and the CP asymmetry in D+ → KS0K+ decay is measured to be (-0.25±0.28±0. 14)%, which is the most sensitive measurement to date. After subtracting CP violation due to K0-K̄0 mixing, the CP asymmetry in D+ → K̄0K+ decay is found to be (+0.08±0.28±0.14)%. © 2013 SISSA.

    DOI: 10.1007/JHEP02(2013)098

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  • Tau Decays at Belle 査読

    K. Hayasaka, K. Inami, Y. Miyazaki

    QUEST FOR THE ORIGIN OF PARTICLES IN THE UNIVERSE   343 - 346   2013年

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    記述言語:英語   掲載種別:研究論文(国際会議プロシーディングス)   出版者・発行元:WORLD SCIENTIFIC PUBL CO PTE LTD  

    We report recent results on the analysis for tau decays obtained Belle experiment. We have searched for the lepton-flavor-violating tau decays using an about 1000 fb(-1) data sample and achieved the sensitivity of O(10(-8)) on the branching ratios.

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  • Results and prospects on lepton flavor violation at Belle/Belle II 査読

    Kiyoshi Hayasaka

    XIII INTERNATIONAL WORKSHOP ON NEUTRINO FACTORIES, SUPER BEAMS AND BETA BEAMS (NUFACT11)   408   2013年

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    記述言語:英語   掲載種別:研究論文(国際会議プロシーディングス)   出版者・発行元:IOP PUBLISHING LTD  

    We report the results and prospects on the tau lepton flavor violation at Belle and Belle II.

    DOI: 10.1088/1742-6596/408/1/012069

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  • Evidence for the eta(b)(2S) and Observation of h(b)(1P) -&gt; eta(b)(1S)gamma and h(b)(2P) -&gt; eta(b)(1S)gamma 査読

    R. Mizuk, D. M. Asner, A. Bondar, T. K. Pedlar, I. Adachi, H. Aihara, K. Arinstein, V. Aulchenko, T. Aushev, T. Aziz, A. M. Bakich, A. Bay, K. Belous, V. Bhardwaj, B. Bhuyan, M. Bischofberger, G. Bonvicini, A. Bozek, M. Bracko, J. Brodzicka, T. E. Browder, V. Chekelian, A. Chen, P. Chen, B. G. Cheon, K. Chilikin, R. Chistov, I. -S. Cho, K. Cho, S. -K. Choi, Y. Choi, J. Dalseno, M. Danilov, Z. Dolezal, Z. Drasal, A. Drutskoy, S. Eidelman, D. Epifanov, J. E. Fast, V. Gaur, N. Gabyshev, A. Garmash, B. Golob, J. Haba, T. Hara, K. Hayasaka, H. Hayashii, Y. Horii, Y. Hoshi, W. -S. Hou, Y. B. Hsiung, H. J. Hyun, T. Iijima, A. Ishikawa, R. Itoh, M. Iwabuchi, Y. Iwasaki, T. Iwashita, I. Jaegle, T. Julius, J. H. Kang, P. Kapusta, T. Kawasaki, H. J. Kim, H. O. Kim, J. H. Kim, K. T. Kim, M. J. Kim, Y. J. Kim, K. Kinoshita, B. R. Ko, S. Koblitz, P. Kodys, S. Korpar, R. T. Kouzes, P. Krizan, P. Krokovny, T. Kuhr, T. Kumita, A. Kuzmin, Y. -J. Kwon, J. S. Lange, S. -H. Lee, J. Li, J. Libby, C. Liu, Y. Liu, Z. Q. Liu, D. Liventsev, R. Louvot, D. Matvienko, S. McOnie, K. Miyabayashi, H. Miyata, G. B. Mohanty, D. Mohapatra, A. Moll, N. Muramatsu, R. Mussa, M. Nakao, Z. Natkaniec, C. Ng, S. Nishida, K. Nishimura, O. Nitoh, T. Nozaki, T. Ohshima, S. Okuno, S. L. Olsen, Y. Onuki, P. Pakhlov, G. Pakhlova, C. W. Park, H. Park, R. Pestotnik, M. Petric, L. E. Piilonen, A. Poluektov, M. Roehrken, Y. Sakai, S. Sandilya, D. Santel, T. Sanuki, Y. Sato, O. Schneider, C. Schwanda, K. Senyo, O. Seon, M. E. Sevior, M. Shapkin, C. P. Shen, T. -A. Shibata, J. -G. Shiu, B. Shwartz, A. Sibidanov, F. Simon, P. Smerkol, Y. -S. Sohn, A. Sokolov, E. Solovieva, S. Stanic, M. Staric, M. Sumihama, T. Sumiyoshi, K. Tanida, G. Tatishvili, Y. Teramoto, I. Tikhomirov, K. Trabelsi, T. Tsuboyama, M. Uchida, S. Uehara, T. Uglov, Y. Unno, S. Uno, P. Vanhoefer, G. Varner, K. E. Varvell, A. Vinokurova, V. Vorobyev, C. H. Wang, M. -Z. Wang, P. Wang, X. L. Wang, M. Watanabe, Y. Watanabe, K. M. Williams, E. Won, B. D. Yabsley, J. Yamaoka, Y. Yamashita, C. Z. Yuan, Z. P. Zhang, V. Zhilich

    PHYSICAL REVIEW LETTERS   109 ( 23 )   232002-1 - 232002-6   2012年12月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We report the first evidence for the eta(b)(2S) using the h(b)(2P) -&gt; eta(b)(2S)gamma transition and the first observation of the h(b)(1P) -&gt; eta(b)(1S)gamma and h(b)(2P) -&gt; eta(b)(1S)gamma transitions. The mass and width of the eta(b)(1S) and eta(b)(2S) are measured to be m(eta b(1S)) = (9402.4 +/- 1.5 +/- 1.8) MeV/c(2), m eta(b(2S)) = (9999.0 +/- 3.5 +/- 2.8 -1.9) MeV/c(2), and Gamma(eta b)(1S) = (10.8(-3.7-2.0)(+4.0+4.5)) MeV. We also update the h(b)(1P) and h(b)(2P) mass measurements. We use a 133.4 fb(-1) data sample collected at energies near the d5S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider.

    DOI: 10.1103/PhysRevLett.109.232002

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  • Measurement of gamma gamma* -&gt; pi(0) transition form factor at Belle 査読

    S. Uehara, Y. Watanabe, H. Nakazawa, I. Adachi, H. Aihara, D. M. Asner, T. Aushev, A. M. Bakich, K. Belous, V. Bhardwaj, B. Bhuyan, M. Bischofberger, A. Bondar, G. Bonvicini, A. Bozek, M. Bracko, T. E. Browder, M. -C. Chang, A. Chen, P. Chen, B. G. Cheon, K. Chilikin, I. -S. Cho, K. Cho, Y. Choi, J. Dalseno, Z. Dolezal, Z. Drasal, S. Eidelman, D. Epifanov, J. E. Fast, M. Feindt, V. Gaur, N. Gabyshev, Y. M. Goh, B. Golob, J. Haba, K. Hayasaka, H. Hayashii, Y. Horii, Y. Hoshi, W. -S. Hou, H. J. Hyun, T. Iijima, A. Ishikawa, R. Itoh, M. Iwabuchi, Y. Iwasaki, T. Iwashita, T. Julius, J. H. Kang, T. Kawasaki, C. Kiesling, H. J. Kim, H. O. Kim, J. B. Kim, J. H. Kim, K. T. Kim, M. J. Kim, Y. J. Kim, B. R. Ko, S. Koblitz, P. Kodys, S. Korpar, R. T. Kouzes, P. Krizan, P. Krokovny, A. Kuzmin, Y. -J. Kwon, J. S. Lange, S-H. Lee, J. Li, Y. Li, J. Libby, C. -L. Lim, C. Liu, Y. Liu, Z. Q. Liu, D. Liventsev, R. Louvot, D. Matvienko, K. Miyabayashi, H. Miyata, Y. Miyazaki, G. B. Mohanty, A. Moll, T. Mori, N. Muramatsu, Y. Nagasaka, E. Nakano, M. Nakao, Z. Natkaniec, S. Nishida, K. Nishimura, O. Nitoh, S. Ogawa, T. Ohshima, S. Okuno, S. L. Olsen, Y. Onuki, P. Pakhlov, G. Pakhlova, H. K. Park, K. S. Park, T. K. Pedlar, R. Pestotnik, M. Petric, L. E. Piilonen, K. Prothmann, M. Roehrken, S. Ryu, H. Sahoo, K. Sakai, Y. Sakai, T. Sanuki, Y. Sato, V. Savinov, O. Schneider, C. Schwanda, R. Seidl, K. Senyo, O. Seon, M. E. Sevior, M. Shapkin, C. P. Shen, T. -A. Shibata, J. -G. Shiu, B. Shwartz, A. Sibidanov, F. Simon, J. B. Singh, P. Smerkol, Y. -S. Sohn, A. Sokolov, E. Solovieva, M. Staric, T. Sumiyoshi, Y. Teramoto, K. Trabelsi, T. Tsuboyama, M. Uchida, Y. Unno, S. Uno, Y. Usov, P. Vanhoefer, G. Varner, A. Vinokurova, V. Vorobyev, C. H. Wang, P. Wang, M. Watanabe, K. M. Williams, E. Won, Y. Yamashita, C. Z. Yuan, C. C. Zhang, Z. P. Zhang, V. Zhilich, V. Zhulanov, A. Zupanc

    PHYSICAL REVIEW D   86 ( 9 )   092007-1 - 092007-27   2012年11月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We report a measurement of the process gamma gamma* -&gt; pi(0) with a 759 fb(-1) data sample recorded with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. The pion transition form factor, F(Q(2)), is measured for the kinematical region 4 GeV2 &lt;= Q(2) &lt;= 40 GeV2, where -Q(2) is the invariant-mass squared of a virtual photon. The measured values of Q(2)vertical bar F(Q(2))vertical bar agree well with the previous measurements below Q(2) similar or equal to 9 GeV2 but do not exhibit the rapid growth in the higher Q(2) region seen in another recent measurement, which exceeds the asymptotic QCD expectation by as much as 50%.

    DOI: 10.1103/PhysRevD.86.092007

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  • Evidence for ${B}^{-}{\rightarrow}{D}_{s}^{+}{K}^{-}{ { \ell } }^{-}{\overline{ { \nu } } }_{ { \ell } }$ and search for ${B}^{-}{\rightarrow}{D}_{s}^{*+}{K}^{-}{ { \ell } }^{-}{\overline{ { \nu } } }_{ { \ell } }$ 査読

    The Belle collaboration, K, Hayasaka は

    Phys. Rev. D   86 ( 7 )   072007-1 - 072007-7   2012年10月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.1103/PhysRevD.86.072007

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  • Evidence for B <sup>-</sup>→Ds+K <sup>-</sup>ℓ <sup>-</sup>ν <inf>̄ℓ</inf> and search for B <sup>-</sup>→Ds*+K <sup>-</sup>ℓ <sup>-</sup>ν <inf>̄ℓ</inf> 査読

    Stypula J, Rozanska M, Adachi I, Adamczyk K, Aihara H, Asner D.M, Aushev T, Bakich A.M, Bhardwaj V, Bhuyan B, Bischofberger M, Bondar A, Bonvicini G, Bozek A, Bra?ko M, Browder T.E, Chang M.-C, Chang P, Chekelian V, Chen A, Chen P, Cheon B.G, Chistov R, Cho I.-S, Cho K, Choi Y, Dalseno J, Danilov M, Dingfelder J, Doleal Z, Dr{\'a}sal Z, Drutskoy A, Eidelman S, Farhat H, Fast J.E, Gaur V, Gabyshev N, Gillard R, Goh Y.M, Golob B, Haba J, Hayasaka K, Hayashii H, Horii Y, Hoshi Y, Hou W.-S, Hsiung Y.B, Hyun H.J, Iijima T, Inami K, Ishikawa A, Itoh R, Iwabuchi M, Iwasaki Y, Julius T, Kang J.H, Kapusta P, Kawasaki T, Kichimi H, Kiesling C, Kim H.J, Kim J.B, Kim J.H, Kim K.T, Kim Y.J, Kinoshita K, Ko B.R, Kody P, Korpar S, Kouzes R.T, Krian P, Krokovny P, Kuhr T, Kumita T, Kuzmin A, Kwon Y.-J, Lee S.-H, Li J, Li Y, Libby J, Liu C, Liu Y, Liu Z.Q, Liventsev D, Louvot R, Miyabayashi K, Miyata H, Miyazaki Y, Mizuk R, Mohanty G.B, Moll A, Muramatsu N, Nakano E, Nakao M, Natkaniec Z, Ng C, Nishida S, Nishimura K, Nitoh O, Nozaki T, Ogawa S, Ohshima T, Okuno S, Olsen S.L, Onuki Y, Pakhlov P, Pakhlova G, Park C.W, Park H, Park H.K, Pedlar T.K, Pestotnik R, Petri? M, Piilonen L.E, Ritter M, R{\"o}hrken M, Ryu S, Sahoo H, Sakai Y, Sandilya S, Santel D, Sanuki T, Sato Y, Schneider O, Schwanda C, Senyo K, Seon O, Sevior M.E, Shapkin M, Shen C.P, Shibata T.-A, Shiu J.-G, Shwartz B, Sibidanov A, Simon F, Smerkol P, Sohn Y.-S, Sokolov A, Solovieva E, Stani? S, Stari? M, Sumihama M, Sumiyoshi T, Teramoto Y, Uchida M, Uglov T, Unno Y, Uno S, Urquijo P, Usov Y, Vanhoefer P, Varner G, Varvell K.E, Vorobyev V, Wang P, Wang X.L, Watanabe M, Watanabe Y, Wiechczynski J, Williams K.M, Won E, Yabsley B.D, Yamamoto H, Yamashita Y, Zhang Z.P, Zhilich V, Zhulanov V, Zupanc A

    Physical Review D - Particles, Fields, Gravitation and Cosmology   86 ( 7 )   2012年10月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.1103/PhysRevD.86.072007

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  • Evidence for CP Violation in the Decay D+ -&gt; K-S(0)pi(+) (vol 109, 021601, 2012) 査読

    B. R. Ko, E. Won, I. Adachi, H. Aihara, D. M. Asner, V. Aulchenko, T. Aushev, T. Aziz, A. M. Bakich, K. Belous, V. Bhardwaj, B. Bhuyan, M. Bischofberger, A. Bondar, G. Bonvicini, A. Bozek, M. Bracko, T. E. Browder, M. -C. Chang, A. Chen, P. Chen, B. G. Cheon, K. Chilikin, I. -S. Cho, K. Cho, Y. Choi, Z. Dolezal, Z. Drasal, S. Eidelman, J. E. Fast, V. Gaur, N. Gabyshev, A. Garmash, Y. M. Goh, B. Golob, J. Haba, K. Hayasaka, H. Hayashii, Y. Horii, Y. Hoshi, W. -S. Hou, Y. B. Hsiung, H. J. Hyun, T. Iijima, A. Ishikawa, R. Itoh, M. Iwabuchi, Y. Iwasaki, T. Iwashita, T. Julius, J. H. Kang, T. Kawasaki, C. Kiesling, H. O. Kim, J. B. Kim, K. T. Kim, M. J. Kim, Y. J. Kim, K. Kinoshita, S. Koblitz, P. Kodys, S. Korpar, P. Krizan, P. Krokovny, T. Kuhr, A. Kuzmin, Y. -J. Kwon, J. S. Lange, S. -H. Lee, J. Li, Y. Li, J. Libby, C. -L. Lim, C. Liu, Y. Liu, Z. Q. Liu, D. Liventsev, R. Louvot, D. Matvienko, Y. Miyazaki, R. Mizuk, G. B. Mohanty, A. Moll, T. Mori, N. Muramatsu, Y. Nagasaka, E. Nakano, M. Nakao, H. Nakazawa, Z. Natkaniec, S. Nishida, K. Nishimura, O. Nitoh, S. Ogawa, T. Ohshima, S. Okuno, S. L. Olsen, Y. Onuki, W. Ostrowicz, P. Pakhlov, G. Pakhlova, C. W. Park, H. K. Park, K. S. Park, T. K. Pedlar, R. Pestotnik, M. Petric, L. E. Piilonen, A. Poluektov, M. Ritter, M. Roehrken, S. Ryu, H. Sahoo, K. Sakai, Y. Sakai, T. Sanuki, Y. Sato, O. Schneider, C. Schwanda, A. J. Schwartz, R. Seidl, K. Senyo, M. E. Sevior, M. Shapkin, V. Shebalin, C. P. Shen, T. -A. Shibata, J. -G. Shiu, B. Shwartz, A. Sibidanov, F. Simon, P. Smerkol, Y. -S. Sohn, A. Sokolov, E. Solovieva, S. Stanic, M. Staric, T. Sumiyoshi, S. Tanaka, G. Tatishvili, Y. Teramoto, K. Trabelsi, T. Tsuboyama, M. Uchida, S. Uehara, Y. Unno, S. Uno, G. Varner, K. E. Varvell, A. Vinokurova, V. Vorobyev, C. H. Wang, P. Wang, X. L. Wang, M. Watanabe, Y. Watanabe, H. Yamamoto, Y. Yamashita, C. Z. Yuan, C. C. Zhang, Z. P. Zhang, V. Zhilich, V. Zhulanov, A. Zupanc

    PHYSICAL REVIEW LETTERS   109 ( 11 )   2012年9月

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    記述言語:英語   出版者・発行元:AMER PHYSICAL SOC  

    DOI: 10.1103/PhysRevLett.109.119903

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  • Erratum: Measurement of azimuthal asymmetries in inclusive production of hadron pairs in e <sup>+</sup>e <sup>-</sup> annihilation at √s=10.58GeV 査読

    R. Seidl, M. Grosse Perdekamp, A. Ogawa, I. Adachi, H. Aihara, S. Bahinipati, A. M. Bakich, W. Bartel, U. Bitenc, A. Bondar, A. Bozek, M. Bračko, J. Brodzicka, T. E. Browder, Y. Chao, A. Chen, B. G. Cheon, R. Chistov, I. S. Cho, Y. Choi, J. Dalseno, M. Dash, A. Drutskoy, S. Eidelman, N. Gabyshev, B. Golob, H. Ha, K. Hayasaka, H. Hayashii, M. Hazumi, D. Heffernan, Y. Hoshi, W. S. Hou, H. J. Hyun, A. Ishikawa, Y. Iwasaki, D. H. Kah, H. Kaji, H. Kawai, T. Kawasaki, H. J. Kim, H. O. Kim, Y. I. Kim, Y. J. Kim, P. Križan, R. Kumar, Y. J. Kwon, S. H. Kyeong, J. S. Lange, J. S. Lee, M. J. Lee, T. Lesiak, J. Li, A. Limosani, C. Liu, D. Liventsev, F. Mandl, S. McOnie, T. Medvedeva, K. Miyabayashi, H. Miyake, H. Miyata, Y. Miyazaki, R. Mizuk, G. R. Moloney, E. Nakano, H. Nakazawa, S. Nishida, O. Nitoh, S. Ogawa, T. Ohshima, S. Okuno, P. Pakhlov, G. Pakhlova, H. Palka, C. W. Park, H. Park, H. K. Park, L. S. Peak, L. E. Piilonen, H. Sahoo, Y. Sakai, O. Schneider, A. Sekiya, K. Senyo, M. E. Sevior, M. Shapkin, C. P. Shen, J. G. Shiu, J. B. Singh, S. Stanič, M. Starič, T. Sumiyoshi, M. Tanaka, Y. Teramoto, I. Tikhomirov, S. Uehara, T. Uglov, Y. Unno, S. Uno

    Physical Review D - Particles, Fields, Gravitation and Cosmology   86 ( 3 )   2012年8月

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    掲載種別:研究論文(学術雑誌)  

    DOI: 10.1103/PhysRevD.86.039905

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  • Search for B -&gt; phi pi decays 査読

    J. H. Kim, M. Nakao, I. Adachi, K. Adamczyk, H. Aihara, D. M. Asner, V. Aulchenko, T. Aushev, A. M. Bakich, K. Belous, B. Bhuyan, M. Bischofberger, A. Bondar, G. Bonvicini, A. Bozek, M. Bracko, T. E. Browder, M. -C. Chang, P. Chang, V. Chekelian, A. Chen, P. Chen, B. G. Cheon, K. Chilikin, I. -S. Cho, K. Cho, Y. Choi, J. Dalseno, J. Dingfelder, Z. Dolezal, Z. Drasal, D. Dutta, S. Eidelman, H. Farhat, J. E. Fast, V. Gaur, N. Gabyshev, R. Gillard, Y. M. Goh, B. Golob, J. Haba, T. Hara, K. Hayasaka, H. Hayashii, Y. Horii, Y. Hoshi, W. -S. Hou, Y. B. Hsiung, H. J. Hyun, T. Iijima, K. Inami, A. Ishikawa, R. Itoh, M. Iwabuchi, Y. Iwasaki, T. Iwashita, T. Julius, J. H. Kang, T. Kawasaki, H. Kichimi, C. Kiesling, H. J. Kim, H. O. Kim, J. B. Kim, K. T. Kim, Y. J. Kim, B. R. Ko, P. Kodys, S. Korpar, R. T. Kouzes, P. Krokovny, T. Kuhr, A. Kuzmin, P. Kvasnicka, Y. -J. Kwon, S. -H. Lee, J. Li, Y. Li, J. Libby, C. -L. Lim, Y. Liu, Z. Q. Liu, D. Liventsev, R. Louvot, K. Miyabayashi, H. Miyata, Y. Miyazaki, G. B. Mohanty, A. Moll, N. Muramatsu, E. Nakano, Z. Natkaniec, C. Ng, S. Nishida, O. Nitoh, T. Ohshima, S. Okuno, S. L. Olsen, G. Pakhlova, C. W. Park, H. Park, H. K. Park, T. K. Pedlar, R. Pestotnik, M. Petric, L. E. Piilonen, M. Ritter, S. Ryu, H. Sahoo, Y. Sakai, S. Sandilya, T. Sanuki, O. Schneider, C. Schwanda, K. Senyo, M. E. Sevior, M. Shapkin, C. P. Shen, T. -A. Shibata, J. -G. Shiu, B. Shwartz, A. Sibidanov, F. Simon, J. B. Singh, P. Smerkol, Y. -S. Sohn, E. Solovieva, S. Stanic, M. Staric, M. Sumihama, T. Sumiyoshi, Y. Teramoto, M. Uchida, T. Uglov, Y. Unno, S. Uno, P. Urquijo, P. Vanhoefer, G. Varner, V. Vorobyev, P. Wang, M. Watanabe, Y. Watanabe, K. M. Williams, E. Won, H. Yamamoto, Y. Yamashita, Z. P. Zhang, V. Zhilich, V. Zhulanov, A. Zupanc

    PHYSICAL REVIEW D   86 ( 3 )   031101-1 - 031101-6   2012年8月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We report on a search for the charmless decays B+ -&gt; phi pi(+) and B-0 -&gt; phi pi(0) that are strongly suppressed in the standard model. The analysis is based on a data sample of 657 x 10(6) B (B) over bar pairs collected at the Y(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. We find no significant signal and set upper limits of 3.3 X 10(-7) for B+ -&gt; phi pi(+) and 1.5 x 10-7 for B-0 -&gt; phi pi(0) at the 90% confidence level.

    DOI: 10.1103/PhysRevD.86.031101

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  • Search for B-0 decays to invisible final states at Belle 査読

    C-L. Hsu, P. Chang, I. Adachi, H. Aihara, K. Arinstein, D. M. Asner, V. Aulchenko, T. Aushev, A. M. Bakich, B. Bhuyan, M. Bischofberger, A. Bondar, G. Bonvicini, A. Bozek, M. Bracko, T. E. Browder, M-C. Chang, Y. Chao, V. Chekelian, A. Chen, P. Chen, B. G. Cheon, K. Chilikin, I-S. Cho, K. Cho, Y. Choi, J. Dalseno, J. Dingfelder, Z. Dolezal, Z. Drasal, D. Dutta, S. Eidelman, D. Epifanov, S. Esen, H. Farhat, J. E. Fast, V. Gaur, N. Gabyshev, R. Gillard, Y. M. Goh, J. Haba, T. Hara, K. Hayasaka, H. Hayashii, Y. Horii, Y. Hoshi, W-S. Hou, Y. B. Hsiung, H. J. Hyun, T. Iijima, K. Inami, A. Ishikawa, R. Itoh, M. Iwabuchi, Y. Iwasaki, T. Iwashita, T. Julius, J. H. Kang, T. Kawasaki, H. Kichimi, C. Kiesling, H. J. Kim, H. O. Kim, J. B. Kim, J. H. Kim, K. T. Kim, Y. J. Kim, B. R. Ko, P. Kodys, S. Korpar, P. Krokovny, T. Kuhr, A. Kuzmin, P. Kvasnicka, Y-J. Kwon, S-H. Lee, J. Li, Y. Li, J. Libby, Y. Liu, Z. Q. Liu, D. Liventsev, R. Louvot, K. Miyabayashi, H. Miyata, Y. Miyazaki, G. B. Mohanty, A. Moll, N. Muramatsu, E. Nakano, M. Nakao, Z. Natkaniec, C. Ng, S. Nishida, O. Nitoh, T. Ohshima, S. Okuno, S. L. Olsen, G. Pakhlova, C. W. Park, H. Park, H. K. Park, T. K. Pedlar, R. Pestotnik, M. Petric, L. E. Piilonen, M. Ritter, M. Roehrken, S. Ryu, H. Sahoo, Y. Sakai, S. Sandilya, T. Sanuki, O. Schneider, C. Schwanda, A. J. Schwartz, K. Senyo, M. E. Sevior, M. Shapkin, C. P. Shen, T-A. Shibata, J-G. Shiu, B. Shwartz, A. Sibidanov, F. Simon, J. B. Singh, P. Smerkol, Y-S. Sohn, E. Solovieva, S. Stanic, M. Staric, M. Sumihama, T. Sumiyoshi, G. Tatishvili, Y. Teramoto, K. Trabelsi, M. Uchida, T. Uglov, Y. Unno, S. Uno, P. Urquijo, Y. Usov, S. E. Vahsen, P. Vanhoefer, G. Varner, V. Vorobyev, P. Wang, M. Watanabe, Y. Watanabe, K. M. Williams, E. Won, H. Yamamoto, Y. Yamashita, Z. P. Zhang, V. Zhilich, V. Zhulanov

    PHYSICAL REVIEW D   86 ( 3 )   032002-1 - 032002-6   2012年8月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We report a search for B-0 decays into invisible final states using a data sample of 657 x 10(6) B (B) over bar pairs collected at the Y(4S) resonance with the Belle detector at the KEKB e(+) e(-) collider. The signal is identified by fully reconstructing a hadronic decay of the accompanying B meson and requiring no other particles in the event. No significant signal is observed, and we obtain an upper limit of 1.3 x 10(-4) at the 90% confidence level for the branching fraction of invisible B-0 decay.

    DOI: 10.1103/PhysRevD.86.032002

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  • Erratum: Measurement of azimuthal asymmetries in inclusive production of hadron pairs in e <sup>+</sup>e <sup>-</sup> annihilation at √s=10.58GeV 査読

    Seidl R, Grosse Perdekamp M, Ogawa A, Adachi I, Aihara H, Bahinipati S, Bakich A.M, Bartel W, Bitenc U, Bondar A, Bozek A, Bra?ko M, Brodzicka J, Browder T.E, Chao Y, Chen A, Cheon B.G, Chistov R, Cho I.-S, Choi Y, Dalseno J, Dash M, Drutskoy A, Eidelman S, Gabyshev N, Golob B, Ha H, Hayasaka K, Hayashii H, Hazumi M, Heffernan D, Hoshi Y, Hou W.-S, Hyun H.J, Ishikawa A, Iwasaki Y, Kah D.H, Kaji H, Kawai H, Kawasaki T, Kim H.J, Kim H.O, Kim Y.I, Kim Y.J, Kri?an P, Kumar R, Kwon Y.-J, Kyeong S.-H, Lange J.S, Lee J.S, Lee M.J, Lesiak T, Li J, Limosani A, Liu C, Liventsev D, Mandl F, McOnie S, Medvedeva T, Miyabayashi K, Miyake H, Miyata H, Miyazaki Y, Mizuk R, Moloney G.R, Nakano E, Nakazawa H, Nishida S, Nitoh O, Ogawa S, Ohshima T, Okuno S, Pakhlov P, Pakhlova G, Palka H, Park C.W, Park H, Park H.K, Peak L.S, Piilonen L.E, Sahoo H, Sakai Y, Schneider O, Sekiya A, Senyo K, Sevior M.E, Shapkin M, Shen C.P, Shiu J.-G, Singh J.B, Stani? S, Stari? M, Sumiyoshi T, Tanaka M, Teramoto Y, Tikhomirov I, Uehara S, Uglov T, Unno Y, Uno S, Urquijo P, Usov Y, Varner G, Vervink K, Wang C.H, Wang P, Wang X.L, Watanabe Y, Wedd R, Won E, Yabsley B.D, Yamashita Y, Zhang Z.P, Zhilich V, Zivko T, Zupanc A, Zyukova O

    Physical Review D - Particles, Fields, Gravitation and Cosmology   86 ( 3 )   2012年8月

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  • Erratum: Evidence for CP violation in the decay D+ <sup>→KS0π+</sup> (Physical Review Letters (2012) 109 (021601)) 査読

    Ko B.R, Won E, Adachi I, Aihara H, Asner D.M, Aulchenko V, Aushev T, Aziz T, Bakich A.M, Belous K, Bhardwaj V, Bhuyan B, Bischofberger M, Bondar A, Bonvicini G, Bozek A, Bra?ko M, Browder T.E, Chang M.-C, Chen A, Chen P, Cheon B.G, Chilikin K, Cho I.-S, Cho K, Choi Y, Doleal Z, Dr{\'a}sal Z, Eidelman S, Fast J.E, Gaur V, Gabyshev N, Garmash A, Goh Y.M, Golob B, Haba J, Hayasaka K, Hayashii H, Horii Y, Hoshi Y, Hou W.-S, Hsiung Y.B, Hyun H.J, Iijima T, Ishikawa A, Itoh R, Iwabuchi M, Iwasaki Y, Iwashita T, Julius T, Kang J.H, Kawasaki T, Kiesling C, Kim H.O, Kim J.B, Kim K.T, Kim M.J, Kim Y.J, Kinoshita K, Koblitz S, Kody P, Korpar S, Krian P, Krokovny P, Kuhr T, Kuzmin A, Kwon Y.-J, Lange J.S, Lee S.-H, Li J, Li Y, Libby J, Lim C.-L, Liu C, Liu Y, Liu Z.Q, Liventsev D, Louvot R, Matvienko D, Miyazaki Y, Mizuk R, Mohanty G.B, Moll A, Mori T, Muramatsu N, Nagasaka Y, Nakano E, Nakao M, Nakazawa H, Natkaniec Z, Nishida S, Nishimura K, Nitoh O, Ogawa S, Ohshima T, Okuno S, Olsen S.L, Onuki Y, Ostrowicz W, Pakhlov P, Pakhlova G, Park C.W, Park H.K, Park K.S, Pedlar T.K, Pestotnik R, Petri? M, Piilonen L.E, Poluektov A, Ritter M, R{\"o}hrken M, Ryu S, Sahoo H, Sakai K, Sakai Y, Sanuki T, Sato Y, Schneider O, Schwanda C, Schwartz A.J, Seidl R, Senyo K, Sevior M.E, Shapkin M, Shebalin V, Shen C.P, Shibata T.-A, Shiu J.-G, Shwartz B, Sibidanov A, Simon F, Smerkol P, Sohn Y.-S, Sokolov A, Solovieva E, Stani? S, Stari? M, Sumiyoshi T, Tanaka S, Tatishvili G, Teramoto Y, Trabelsi K, Tsuboyama T, Uchida M, Uehara S, Unno Y, Uno S, Varner G, Varvell K.E, Vinokurova A, Vorobyev V, Wang C.H, Wang P, Wang X.L, Watanabe M, Watanabe Y, Yamamoto H, Yamashita Y, Yuan C.Z, Zhang C.C, Zhang Z.P, Zhilich V, Zhulanov V, Zupanc A

    Physical Review Letters   109 ( 2 )   2012年7月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.1103/PhysRevLett.109.021601

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  • Evidence for CP Violation in the Decay D+ -&gt; K-S(0)pi(+) 査読

    B. R. Ko, E. Won, I. Adachi, H. Aihara, D. M. Asner, V. Aulchenko, T. Aushev, T. Aziz, A. M. Bakich, K. Belous, V. Bhardwaj, B. Bhuyan, M. Bischofberger, A. Bondar, G. Bonvicini, A. Bozek, M. Bracko, T. E. Browder, M. -C. Chang, A. Chen, P. Chen, B. G. Cheon, K. Chilikin, I. -S. Cho, K. Cho, Y. Choi, Z. Dolezal, Z. Drasal, S. Eidelman, J. E. Fast, V. Gaur, N. Gabyshev, A. Garmash, Y. M. Goh, B. Golob, J. Haba, K. Hayasaka, H. Hayashii, Y. Horii, Y. Hoshi, W. -S. Hou, Y. B. Hsiung, H. J. Hyun, T. Iijima, A. Ishikawa, R. Itoh, M. Iwabuchi, Y. Iwasaki, T. Iwashita, T. Julius, J. H. Kang, T. Kawasaki, C. Kiesling, H. O. Kim, J. B. Kim, K. T. Kim, M. J. Kim, Y. J. Kim, K. Kinoshita, S. Koblitz, P. Kodys, S. Korpar, P. Krizan, P. Krokovny, T. Kuhr, A. Kuzmin, Y. -J. Kwon, J. S. Lange, S. -H. Lee, J. Li, Y. Li, J. Libby, C. -L. Lim, C. Liu, Y. Liu, Z. Q. Liu, D. Liventsev, R. Louvot, D. Matvienko, Y. Miyazaki, R. Mizuk, G. B. Mohanty, A. Moll, T. Mori, N. Muramatsu, Y. Nagasaka, E. Nakano, M. Nakao, H. Nakazawa, Z. Natkaniec, S. Nishida, K. Nishimura, O. Nitoh, S. Ogawa, T. Ohshima, S. Okuno, S. L. Olsen, Y. Onuki, W. Ostrowicz, P. Pakhlov, G. Pakhlova, C. W. Park, H. K. Park, K. S. Park, T. K. Pedlar, R. Pestotnik, M. Petric, L. E. Piilonen, A. Poluektov, M. Ritter, M. Roehrken, S. Ryu, H. Sahoo, K. Sakai, Y. Sakai, T. Sanuki, Y. Sato, O. Schneider, C. Schwanda, A. J. Schwartz, R. Seidl, K. Senyo, M. E. Sevior, M. Shapkin, V. Shebalin, C. P. Shen, T.-A. Shibata, J.-G. Shiu, B. Shwartz, A. Sibidanov, F. Simon, P. Smerkol, Y. -S. Sohn, A. Sokolov, E. Solovieva, S. Stanic, M. Staric, T. Sumiyoshi, S. Tanaka, G. Tatishvili, Y. Teramoto, K. Trabelsi, T. Tsuboyama, M. Uchida, S. Uehara, Y. Unno, S. Uno, G. Varner, K. E. Varvell, A. Vinokurova, V. Vorobyev, C. H. Wang, P. Wang, X. L. Wang, M. Watanabe, Y. Watanabe, H. Yamamoto, Y. Yamashita, C. Z. Yuan, C. C. Zhang, Z. P. Zhang, V. Zhilich, V. Zhulanov, A. Zupanc

    PHYSICAL REVIEW LETTERS   109 ( 2 )   021601-1 - 021601-6   2012年7月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We observe evidence for CP violation in the decay D+ -&gt; K-S(0)pi(+) using a data sample with an integrated luminosity of 977 fb(-1) collected by the Belle detector at the KEKB e(+) e(-) asymmetric-energy collider. The CP asymmetry in the decay is measured to be (-0.363 +/- 0.094 +/- 0.067)%, which is 3.2 standard deviations away from zero, and is consistent with the expected CP violation due to the neutral kaon in the final state.

    DOI: 10.1103/PhysRevLett.109.021601

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  • Observation of New Resonant Structures in gamma gamma -&gt; omega phi, phi phi, and omega omega 査読

    Z. Q. Liu, C. P. Shen, C. Z. Yuan, T. Iijima, I. Adachi, H. Aihara, D. M. Asner, V. Aulchenko, T. Aushev, A. M. Bakich, K. Belous, V. Bhardwaj, B. Bhuyan, M. Bischofberger, A. Bondar, A. Bozek, M. Bracko, T. E. Browder, M. -C. Chang, P. Chang, A. Chen, P. Chen, B. G. Cheon, R. Chistov, I. -S. Cho, K. Cho, S. -K. Choi, Y. Choi, J. Dalseno, Z. Dolezal, Z. Drasal, S. Eidelman, D. Epifanov, J. E. Fast, V. Gaur, N. Gabyshev, A. Garmash, Y. M. Goh, J. Haba, K. Hayasaka, H. Hayashii, Y. Horii, Y. Hoshi, W. -S. Hou, Y. B. Hsiung, H. J. Hyun, K. Inami, A. Ishikawa, R. Itoh, M. Iwabuchi, Y. Iwasaki, T. Iwashita, T. Julius, J. H. Kang, T. Kawasaki, C. Kiesling, H. J. Kim, H. O. Kim, J. B. Kim, K. T. Kim, M. J. Kim, Y. J. Kim, B. R. Ko, S. Koblitz, P. Kodys, S. Korpar, P. Krizan, P. Krokovny, T. Kumita, A. Kuzmin, Y. -J. Kwon, J. S. Lange, S. -H. Lee, J. Li, X. R. Li, Y. Li, J. Libby, C. Liu, D. Liventsev, R. Louvot, D. Matvienko, S. McOnie, K. Miyabayashi, H. Miyata, Y. Miyazaki, R. Mizuk, G. B. Mohanty, A. Moll, T. Mori, N. Muramatsu, R. Mussa, Y. Nagasaka, E. Nakano, M. Nakao, H. Nakazawa, C. Ng, S. Nishida, K. Nishimura, O. Nitoh, T. Nozaki, S. Ogawa, T. Ohshima, S. Okuno, S. L. Olsen, Y. Onuki, P. Pakhlov, G. Pakhlova, C. W. Park, H. K. Park, T. K. Pedlar, R. Pestotnik, M. Petric, L. E. Piilonen, M. Ritter, M. Roehrken, S. Ryu, H. Sahoo, K. Sakai, Y. Sakai, T. Sanuki, Y. Sato, O. Schneider, C. Schwanda, R. Seidl, K. Senyo, M. E. Sevior, M. Shapkin, V. Shebalin, T. -A. Shibata, J. -G. Shiu, B. Shwartz, A. Sibidanov, F. Simon, P. Smerkol, Y. -S. Sohn, A. Sokolov, E. Solovieva, S. Stanic, M. Staric, T. Sumiyoshi, G. Tatishvili, Y. Teramoto, M. Uchida, S. Uehara, T. Uglov, Y. Unno, S. Uno, P. Urquijo, G. Varner, A. Vinokurova, V. Vorobyev, C. H. Wang, P. Wang, X. L. Wang, M. Watanabe, Y. Watanabe, K. M. Williams, E. Won, Y. Yamashita, Y. Yusa, C. C. Zhang, Z. P. Zhang, V. Zhilich, V. Zhulanov

    PHYSICAL REVIEW LETTERS   108 ( 23 )   232001-1 - 232001-7   2012年6月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    The processes gamma gamma -&gt; omega phi,phi phi, and omega omega are measured using an 870 fb(-1) data sample collected with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. Production of vector meson pairs is clearly observed and their cross sections are measured for masses that range from threshold to 4.0 GeV. In addition to signals from well established spin-zero and spin-two charmonium states, there are resonant structures below charmonium threshold, which have not been previously observed. We report a spin-parity analysis for the new structures and determine the products of the eta(c), chi(c0), and chi(c2) two-photon decay widths and branching fractions to omega phi,phi phi, and omega omega.

    DOI: 10.1103/PhysRevLett.108.232001

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  • Measurement of B-0 -&gt; J/psi eta((')) and constraint on the eta - eta ' mixing angle 査読

    M. -C. Chang, Y. -C. Duh, J. -Y. Lin, I. Adachi, K. Adamczyk, H. Aihara, D. M. Asner, T. Aushev, A. M. Bakich, V. Bhardwaj, B. Bhuyan, A. Bondar, A. Bozek, M. Bracko, J. Brodzicka, T. E. Browder, P. Chang, A. Chen, K. -F. Chen, P. Chen, B. G. Cheon, K. Chilikin, R. Chistov, I. -S. Cho, S. -K. Choi, Y. Choi, J. Dalseno, Z. Dolezal, Z. Drasal, A. Drutskoy, S. Eidelman, J. E. Fast, V. Gaur, A. Garmash, Y. M. Goh, B. Golob, J. Haba, T. Hara, K. Hayasaka, H. Hayashii, Y. Horii, Y. Hoshi, W. -S. Hou, H. J. Hyun, T. Iijima, A. Ishikawa, R. Itoh, M. Iwabuchi, Y. Iwasaki, T. Iwashita, T. Julius, N. Katayama, T. Kawasaki, H. O. Kim, J. B. Kim, K. T. Kim, M. J. Kim, Y. J. Kim, K. Kinoshita, B. R. Ko, S. Koblitz, P. Kodys, S. Korpar, P. Krizan, P. Krokovny, T. Kuhr, R. Kumar, T. Kumita, Y. -J. Kwon, J. S. Lange, S. -H. Lee, J. Li, Y. Li, J. Libby, C. Liu, Z. Q. Liu, R. Louvot, S. McOnie, K. Miyabayashi, H. Miyata, Y. Miyazaki, R. Mizuk, G. B. Mohanty, A. Moll, N. Muramatsu, Y. Nagasaka, I. Nakamura, E. Nakano, M. Nakao, H. Nakazawa, Z. Natkaniec, S. Nishida, K. Nishimura, O. Nitoh, S. Ogawa, T. Ohshima, S. Okuno, S. L. Olsen, G. Pakhlova, C. W. Park, K. S. Park, T. K. Pedlar, T. Peng, R. Pestotnik, M. Petric, L. E. Piilonen, M. Roehrken, S. Ryu, H. Sahoo, K. Sakai, Y. Sakai, O. Schneider, C. Schwanda, A. J. Schwartz, K. Senyo, M. E. Sevior, M. Shapkin, C. P. Shen, T. -A. Shibata, J. -G. Shiu, A. Sibidanov, F. Simon, P. Smerkol, Y. -S. Sohn, A. Sokolov, E. Solovieva, S. Stanic, M. Staric, M. Sumihama, T. Sumiyoshi, S. Tanaka, G. Tatishvili, Y. Teramoto, M. Uchida, S. Uehara, T. Uglov, Y. Unno, S. Uno, P. Urquijo, Y. Usov, G. Varner, V. Vorobyev, C. H. Wang, M. -Z. Wang, P. Wang, Y. Watanabe, K. M. Williams, E. Won, H. Yamamoto, Y. Yamashita, C. Z. Yuan, Y. Yusa, Z. P. Zhang, V. Zhilich, V. Zhulanov, A. Zupanc

    PHYSICAL REVIEW D   85 ( 9 )   091102-1 - 091102-6   2012年5月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We measure the branching fractions of B-0 -&gt; J/psi eta((')) decays with the complete Belle data sample of 772 x 10(6) B (B) over bar events collected at the Y(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. The results for the branching fractions are: B(B-0 -&gt; J/psi eta) = (12.3 +/-(1.8)(1.7)+/- 0.7) x 10(-6) and B(B-0 -&gt; J/psi eta') &lt; 7.4 x 10(-6) at 90% confidence level. The eta-eta' mixing angle is constrained to be less than 42.2 degrees at 90% confidence level.

    DOI: 10.1103/PhysRevD.85.091102

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  • First Observation of B-s(0) -&gt; J/psi eta and B-s(0) -&gt; J/psi eta ' 査読

    J. Li, I. Adachi, H. Aihara, K. Arinstein, D. M. Asner, V. Aulchenko, T. Aushev, A. M. Bakich, V. Bhardwaj, B. Bhuyan, M. Bischofberger, A. Bondar, A. Bozek, M. Bracko, O. Brovchenko, T. E. Browder, M. -C. Chang, A. Chen, P. Chen, B. G. Cheon, R. Chistov, K. Cho, S. -K. Choi, Y. Choi, J. Dalseno, Z. Dolezal, A. Drutskoy, S. Eidelman, S. Esen, J. E. Fast, V. Gaur, A. Garmash, Y. M. Goh, J. Haba, T. Hara, K. Hayasaka, H. Hayashii, Y. Horii, Y. Hoshi, W. -S. Hou, Y. B. Hsiung, H. J. Hyun, T. Iijima, K. Inami, A. Ishikawa, R. Itoh, M. Iwabuchi, Y. Iwasaki, T. Iwashita, T. Julius, J. H. Kang, P. Kapusta, N. Katayama, T. Kawasaki, H. J. Kim, H. O. Kim, J. B. Kim, K. T. Kim, M. J. Kim, Y. J. Kim, K. Kinoshita, B. R. Ko, N. Kobayashi, P. Kodys, S. Korpar, P. Krizan, P. Krokovny, T. Kuhr, R. Kumar, A. Kuzmin, Y. -J. Kwon, J. S. Lange, M. J. Lee, S. -H. Lee, Y. Li, J. Libby, C. Liu, Y. Liu, Z. Q. Liu, D. Liventsev, R. Louvot, D. Matvienko, S. McOnie, Y. Miyazaki, R. Mizuk, G. B. Mohanty, A. Moll, T. Mori, N. Muramatsu, I. Nakamura, E. Nakano, M. Nakao, H. Nakazawa, Z. Natkaniec, S. Nishida, K. Nishimura, O. Nitoh, S. Ogawa, T. Ohshima, S. Okuno, S. L. Olsen, W. Ostrowicz, G. Pakhlova, C. W. Park, H. K. Park, K. S. Park, T. K. Pedlar, T. Peng, R. Pestotnik, M. Petric, L. E. Piilonen, M. Prim, M. Roehrken, S. Ryu, H. Sahoo, K. Sakai, Y. Sakai, T. Sanuki, Y. Sato, O. Schneider, C. Schwanda, A. J. Schwartz, K. Senyo, O. Seon, M. E. Sevior, M. Shapkin, V. Shebalin, C. P. Shen, T. -A. Shibata, J. -G. Shiu, F. Simon, P. Smerkol, Y. -S. Sohn, A. Sokolov, S. Stanic, M. Staric, M. Sumihama, T. Sumiyoshi, S. Tanaka, G. Tatishvili, Y. Teramoto, K. Trabelsi, M. Uchida, S. Uehara, Y. Unno, S. Uno, P. Urquijo, Y. Usov, G. Varner, K. E. Varvell, V. Vorobyev, A. Vossen, C. H. Wang, P. Wang, M. Watanabe, Y. Watanabe, J. Wicht, K. M. Williams, E. Won, Y. Yamashita, C. Z. Yuan, Z. P. Zhang, V. Zhilich, A. Zupanc

    PHYSICAL REVIEW LETTERS   108 ( 18 )   181808-1 - 181808-5   2012年5月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We report first observations of B-s(0) -&gt; J/psi eta and B-s(0) -&gt; J/psi eta'. The results are obtained from 121.4 fb(-1) of data collected at the Gamma(5S) resonance with the Belle detector at the KEKB e(+)e(-) collider. We obtain the branching fractions B(B-s(0)-&gt; J/psi eta')=[5.10 +/- 0.50(stat)+/- 0.25(syst)(-0.79)(+1.14)(N-Bs(*)(B) over bars(*)] X 10(-4,) B(B-s(0)-&gt; J/psi eta') = [3.71 +/- 0.61(stat)+/-(+0.83)(-0.57)(N-Bs(*)(B) over bars(*)] X 10(-4). The ratio of the two branching fractions is measured to be B(B-s -&gt; J/psi eta')/B(B-s -&gt; J/psi eta) = 0.73 +/- 0.14(stat) +/- 0.02(syst).

    DOI: 10.1103/PhysRevLett.108.181808

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  • Search for Time-Dependent CPT Violation in Hadronic and Semileptonic B Decays 査読

    T. Higuchi, K. Sumisawa, I. Adachi, H. Aihara, D. M. Asner, V. Aulchenko, T. Aushev, A. M. Bakich, A. Bay, K. Belous, V. Bhardwaj, B. Bhuyan, M. Bischofberger, A. Bondar, A. Bozek, M. Bracko, O. Brovchenko, T. E. Browder, M.-C. Chang, P. Chang, A. Chen, P. Chen, B. G. Cheon, K. Chilikin, R. Chistov, I.-S. Cho, K. Cho, S.-K. Choi, Y. Choi, J. Dalseno, M. Danilov, Z. Dolezal, Z. Drasal, S. Eidelman, D. Epifanov, J. E. Fast, V. Gaur, N. Gabyshev, A. Garmash, Y. M. Goh, B. Golob, J. Haba, K. Hara, K. Hayasaka, H. Hayashii, Y. Horii, Y. Hoshi, W.-S. Hou, Y. B. Hsiung, H. J. Hyun, T. Iijima, K. Inami, A. Ishikawa, R. Itoh, Y. Iwasaki, T. Iwashita, T. Julius, J. H. Kang, P. Kapusta, T. Kawasaki, C. Kiesling, H. J. Kim, H. O. Kim, J. B. Kim, K. T. Kim, M. J. Kim, Y. J. Kim, B. R. Ko, S. Koblitz, P. Kodys, S. Korpar, P. Krizan, P. Krokovny, T. Kuhr, T. Kumita, A. Kuzmin, Y.-J. Kwon, J. S. Lange, S.-H. Lee, J. Li, Y. Li, J. Libby, C. Liu, Z. Q. Liu, D. Liventsev, R. Louvot, D. Matvienko, S. McOnie, K. Miyabayashi, H. Miyata, Y. Miyazaki, G. B. Mohanty, A. Moll, T. Mori, N. Muramatsu, Y. Nagasaka, Y. Nakahama, M. Nakao, H. Nakazawa, Z. Natkaniec, C. Ng, S. Nishida, K. Nishimura, O. Nitoh, T. Nozaki, S. Ogawa, T. Ohshima, S. Okuno, S. L. Olsen, Y. Onuki, P. Pakhlov, G. Pakhlova, C. W. Park, H. K. Park, K. S. Park, R. Pestotnik, M. Petric, L. E. Piilonen, M. Prim, M. Ritter, M. Roehrken, S. Ryu, H. Sahoo, Y. Sakai, T. Sanuki, Y. Sato, O. Schneider, C. Schwanda, A. J. Schwartz, R. Seidl, K. Senyo, M. E. Sevior, M. Shapkin, V. Shebalin, C. P. Shen, T.-A. Shibata, J.-G. Shiu, B. Shwartz, A. Sibidanov, R. Sinha, P. Smerkol, Y.-S. Sohn, A. Sokolov, E. Solovieva, S. Stanic, M. Staric, M. Sumihama, T. Sumiyoshi, S. Tanaka, G. Tatishvili, Y. Teramoto, K. Trabelsi, T. Tsuboyama, M. Uchida, S. Uehara, T. Uglov, Y. Unno, S. Uno, P. Urquijo, Y. Usov, G. Varner, K. E. Varvell, A. Vinokurova, V. Vorobyev, C. H. Wang, P. Wang, X. L. Wang, M. Watanabe, Y. Watanabe, K. M. Williams, E. Won, B. D. Yabsley, H. Yamamoto, Y. Yamashita, C. Z. Yuan, Y. Yusa, Z. P. Zhang, V. Zhilich, V. Zhulanov

    PHYSICAL REVIEW D   85 ( 7 )   071105   2012年4月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We report a new sensitive search for C P T violation, which includes improved measurements of the C P T-violating parameter z and the total decay-width difference normalized to the averaged width delta(d) delta(d) of the two B-d mass eigenstates . The results are based on a data sample of 535 x 10(6) B B pairs collected at the Epsilon(4 S) resonance with the Belle detector at the KEKB asymmetric-energy e(+) e(-) collider. We obtain Re (z) = [+1.9 +/- 3.7 (stat) +/- 3.3 (syst)] x 10(&gt;-2), qm (z) = [-5.7 +/- 3.3 (stat) +/- 3.3 (syst)] x 10(-3), and delta(d) / delta(d) = [-1.7 +/- 1.8 (stat) +/- 1.1 (syst)] x 10(-2), all of which are consistent with zero. This is the most precise single measurement of these parameters in the neutral B-meson system to date.

    DOI: 10.1103/PhysRevD.85.071105

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  • Precise Measurement of the $CP$ Violation Parameter ${sin}・ソ2{ { \phi } }_{1}$ in ${B}^{0}{\rightarrow}(c\overline{c}){K}^{0}$ Decays 査読

    The Belle collaboration, K, Hayasaka は

    Phys. Rev. Lett.   108 ( 17 )   171802-1 - 171802-7   2012年4月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.1103/PhysRevLett.108.171802

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  • Recent LFV results on tau lepton from Belle 査読

    K. Hayasaka

    Nuclear Physics B - Proceedings Supplements   225-227   169 - 172   2012年4月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    We report on the recent results of searches for lepton-flavor-violating . τ decays with the world-largest data samples accumulated by the Belle detector. Our sensitivity reaches . O(10-8) and it corresponds to about one hundred times more sensitive search than CLEO's. Also, we discuss the future prospects on the SuperKEKB/Belle II experiments, where we expect a forty times higher luminosity. © 2012 Elsevier B.V.

    DOI: 10.1016/j.nuclphysbps.2012.02.036

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  • Measurement of the $CP$-Violation Parameter ${sin}・ソ2{ { \phi } }_{1}$ with a New Tagging Method at the ${\Upsilon}(5S)$ Resonance 査読

    The Belle collaboration, K, Hayasaka は

    Phys. Rev. Lett.   108 ( 17 )   171801-1 - 171801-6   2012年4月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.1103/PhysRevLett.108.171801

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  • Search for double charmonium decays of the P-wave spin-triplet bottomonium states 査読

    C. P. Shen, C. Z. Yuan, T. Iijima, I. Adachi, H. Aihara, K. Arinstein, D. M. Asner, T. Aushev, A. M. Bakich, B. Bhuyan, M. Bischofberger, A. Bozek, M. Bracko, T. E. Browder, M. -C. Chang, A. Chen, B. G. Cheon, K. Chilikin, R. Chistov, I. -S. Cho, K. Cho, S. -K. Choi, Y. Choi, J. Dalseno, Z. Drasal, A. Drutskoy, S. Eidelman, J. E. Fast, V. Gaur, N. Gabyshev, A. Garmash, Y. M. Goh, J. Haba, T. Hara, K. Hayasaka, H. Hayashii, Y. Horii, Y. Hoshi, W. -S. Hou, H. J. Hyun, A. Ishikawa, R. Itoh, M. Iwabuchi, T. Iwashita, T. Julius, J. H. Kang, T. Kawasaki, H. J. Kim, H. O. Kim, J. B. Kim, K. T. Kim, M. J. Kim, Y. J. Kim, B. R. Ko, S. Koblitz, P. Kodys, S. Korpar, P. Krizan, P. Krokovny, T. Kumita, Y. -J. Kwon, J. S. Lange, S. -H. Lee, J. Li, J. Libby, C. -L. Lim, C. Liu, Z. Q. Liu, D. Liventsev, R. Louvot, S. McOnie, K. Miyabayashi, H. Miyata, Y. Miyazaki, R. Mizuk, G. B. Mohanty, A. Moll, T. Mori, N. Muramatsu, R. Mussa, E. Nakano, M. Nakao, H. Nakazawa, S. Nishida, K. Nishimura, O. Nitoh, S. Ogawa, T. Ohshima, S. Okuno, S. L. Olsen, Y. Onuki, G. Pakhlova, C. W. Park, H. K. Park, T. K. Pedlar, M. Petric, L. E. Piilonen, A. Poluektov, M. Ritter, M. Roehrken, H. Sahoo, Y. Sakai, T. Sanuki, Y. Sato, O. Schneider, C. Schwanda, K. Senyo, O. Seon, M. Shapkin, T. -A. Shibata, J. -G. Shiu, A. Sibidanov, F. Simon, J. B. Singh, P. Smerkol, Y. -S. Sohn, E. Solovieva, S. Stanic, M. Staric, T. Sumiyoshi, G. Tatishvili, Y. Teramoto, T. Tsuboyama, M. Uchida, S. Uehara, Y. Unno, S. Uno, P. Urquijo, G. Varner, K. E. Varvell, C. H. Wang, P. Wang, X. L. Wang, M. Watanabe, Y. Watanabe, E. Won, Y. Yamashita, Y. Yusa, Z. P. Zhang, V. Zhilich, V. Zhulanov, A. Zupanc

    PHYSICAL REVIEW D   85 ( 7 )   2012年4月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    Using a sample of 158 x 10(6) Y(2S) events collected with the Belle detector, we search for the first time for double-charmonium decays of the P-wave spin-triplet bottomonium states (Y(2S) -&gt; gamma chi(bJ), chi(bJ) -&gt; J/psi J/psi, J/psi psi', psi'psi' for J 0, 1, and 2). No significant chi(bJ) signal is observed in the double-charmonium mass spectra, and we obtain the following upper limits: B(chi(bJ) -&gt; J/psi J/psi) &lt; 7.1 x 10(-5), 2.7 x 10(-5), 4.5 x 10(-5), B(chi(bJ) -&gt; J/psi psi') &lt; 1.2 x 10(-4), 1. 7 x 10(-5), 4.9 x 10(-5), B(chi(bJ) -&gt; psi'psi') &lt; 3.1 x 10(-5), 6.2 x 10(-5), 1.6 x 10(-5) for J = 0, 1, and 2, respectively, at the 90% confidence level. These limits are significantly lower than the central values (with uncertainties of 50% to 70%) predicted using the light cone formalism but are consistent with calculations using the nonrelativistic QCD (NRQCD) factorization approach.

    DOI: 10.1103/PhysRevD.85.071102

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    その他リンク: http://orcid.org/0000-0002-1018-219X

  • Observation of Two Charged Bottomoniumlike Resonances in Y(5S) Decays 査読

    A. Bondar, A. Garmash, R. Mizuk, D. Santel, K. Kinoshita, I. Adachi, H. Aihara, K. Arinstein, D. M. Asner, T. Aushev, T. Aziz, A. M. Bakich, E. Barberio, K. Belous, V. Bhardwaj, M. Bischofberger, A. Bozek, M. Bracko, T. E. Browder, M. -C. Chang, P. Chang, A. Chen, B. G. Cheon, K. Chilikin, R. Chistov, I. -S. Cho, K. Cho, S. -K. Choi, Y. Choi, J. Dalseno, M. Danilov, Z. Dolezal, A. Drutskoy, S. Eidelman, D. Epifanov, J. E. Fast, V. Gaur, N. Gabyshev, Y. M. Goh, B. Golob, J. Haba, T. Hara, K. Hayasaka, Y. Hoshi, H. J. Hyun, T. Iijima, K. Inami, A. Ishikawa, M. Iwabuchi, Y. Iwasaki, T. Iwashita, T. Julius, J. H. Kang, T. Kawasaki, H. Kichimi, C. Kiesling, J. B. Kim, J. H. Kim, K. T. Kim, M. J. Kim, Y. J. Kim, B. R. Ko, N. Kobayashi, S. Koblitz, P. Kodys, S. Korpar, P. Krizan, T. Kuhr, R. Kumar, T. Kumita, A. Kuzmin, J. S. Lange, S. -H. Lee, J. Li, Y. Li, J. Libby, C. Liu, Z. Q. Liu, D. Liventsev, R. Louvot, D. Matvienko, S. McOnie, H. Miyata, Y. Miyazaki, G. B. Mohanty, A. Moll, N. Muramatsu, R. Mussa, M. Nakao, Z. Natkaniec, S. Neubauer, M. Niiyama, S. Nishida, K. Nishimura, O. Nitoh, T. Nozaki, S. L. Olsen, Y. Onuki, P. Pakhlov, G. Pakhlova, H. Park, H. K. Park, T. K. Pedlar, M. Petric, L. E. Piilonen, A. Poluektov, M. Prim, M. Ritter, M. Roehrken, S. Ryu, H. Sahoo, Y. Sakai, D. Santel, T. Sanuki, O. Schneider, C. Schwanda, K. Senyo, M. E. Sevior, M. Shapkin, V. Shebalin, T. -A. Shibata, J. -G. Shiu, B. Shwartz, F. Simon, P. Smerkol, Y. -S. Sohn, A. Sokolov, E. Solovieva, M. Staric, M. Sumihama, T. Sumiyoshi, S. Tanaka, G. Tatishvili, Y. Teramoto, I. Tikhomirov, M. Uchida, S. Uehara, T. Uglov, Y. Ushiroda, S. E. Vahsen, G. Varner, A. Vinokurova, C. H. Wang, M. -Z. Wang, P. Wang, X. L. Wang, Y. Watanabe, K. M. Williams, E. Won, B. D. Yabsley, Y. Yamashita, M. Yamauchi, C. Z. Yuan, Y. Yusa, Z. P. Zhang, V. Zhilich, V. Zhulanov, A. Zupanc, O. Zyukova

    PHYSICAL REVIEW LETTERS   108 ( 12 )   122001-1 - 122001-6   2012年3月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We report the observation of two narrow structures in the mass spectra of the pi(+/-) Y(nS) (n = 1, 2, 3) and pi(+/-) h(b)(mP) (m = 1, 2) pairs that are produced in association with a single charged pion in Y(5S) decays. The measured masses and widths of the two structures averaged over the five final states are M-1 = (10 607.2 +/- 2.0) MeV/c(2), Gamma(1) =(18.4 +/- 2.4) MeV, and M-2 = (10 652.2 +/- 1.5) MeV/c(2), Gamma(2) = (11.5 +/- 2.2) MeV. The results are obtained with a 121.4 fb(-1) data sample collected with the Belle detector in the vicinity of the Y(5S) resonance at the KEKB asymmetric-energy e(+)e(-) collider.

    DOI: 10.1103/PhysRevLett.108.122001

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  • Search for CP Violation in D-+/- Meson Decays to phi pi(+/-) 査読

    M. Staric, H. Aihara, K. Arinstein, D. M. Asner, T. Aushev, A. M. Bakich, A. Bay, V. Bhardwaj, B. Bhuyan, A. Bozek, M. Bracko, T. E. Browder, A. Chen, P. Chen, B. G. Cheon, K. Chilikin, R. Chistov, I-S Cho, K. Cho, Y. Choi, Z. Dolezal, Z. Drasal, S. Eidelman, J. E. Fast, V. Gaur, N. Gabyshev, B. Golob, J. Haba, K. Hayasaka, Y. Horii, Y. Hoshi, W-S Hou, Y. B. Hsiung, T. Iijima, K. Inami, A. Ishikawa, R. Itoh, M. Iwabuchi, Y. Iwasaki, T. Iwashita, T. Julius, J. H. Kang, T. Kawasaki, C. Kiesling, H. J. Kim, H. O. Kim, J. B. Kim, K. T. Kim, M. J. Kim, Y. J. Kim, K. Kinoshita, B. R. Ko, N. Kobayashi, S. Koblitz, P. Kodys, S. Korpar, P. Krizan, T. Kumita, Y-J Kwon, J. S. Lange, S-H Lee, J. Li, Y. Li, J. Libby, C. Liu, Z. Q. Liu, R. Louvot, S. McOnie, K. Miyabayashi, H. Miyata, Y. Miyazaki, G. B. Mohanty, E. Nakano, Z. Natkaniec, S. Nishida, O. Nitoh, T. Nozaki, T. Ohshima, S. Okuno, S. L. Olsen, G. Pakhlova, H. K. Park, K. S. Park, R. Pestotnik, M. Petric, L. E. Piilonen, M. Roehrken, S. Ryu, H. Sahoo, K. Sakai, Y. Sakai, T. Sanuki, O. Schneider, C. Schwanda, A. J. Schwartz, O. Seon, M. E. Sevior, V. Shebalin, C. P. Shen, T-A Shibata, J-G Shiu, B. Shwartz, F. Simon, P. Smerkol, Y-S Sohn, A. Sokolov, S. Stanic, M. Sumihama, K. Sumisawa, G. Tatishvili, Y. Teramoto, K. Trabelsi, M. Uchida, S. Uehara, T. Uglov, Y. Unno, S. Uno, P. Urquijo, G. Varner, A. Vossen, C. H. Wang, M-Z Wang, M. Watanabe, Y. Watanabe, K. M. Williams, E. Won, B. D. Yabsley, Y. Yamashita, C. Z. Yuan, C. C. Zhang, Z. P. Zhang, V. Zhilich, V. Zhulanov, A. Zupanc

    PHYSICAL REVIEW LETTERS   108 ( 6 )   071801-1 - 071801-6   2012年2月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We search for CP violation in Cabibbo-suppressed charged D meson decays by measuring the difference between the CP-violating asymmetries for the Cabibbo-suppressed decays D-+/- -&gt; K+K-pi(+/-) and the Cabibbo-favored decays D1/s -&gt; K+K-pi(+/-) in the K+K- mass region of the phi resonance. Using 955 fb(-1) of data collected with the Belle detector, we obtain A(CP)(D+-&gt;phi pi+) (+0.51 +/- 0.28 +/- 0.05)%. The measurement improves the sensitivity of previous searches by more than a factor of 5. We find no evidence for direct CP violation.

    DOI: 10.1103/PhysRevLett.108.071801

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  • First Observation of the P-Wave Spin-Singlet Bottomonium States h(b)(1P) and h(b)(2P) 査読

    I. Adachi, H. Aihara, K. Arinstein, D. M. Asner, T. Aushev, T. Aziz, A. M. Bakich, E. Barberio, K. Belous, V. Bhardwaj, B. Bhuyan, A. Bondar, M. Bracko, J. Brodzicka, T. E. Browder, P. Chang, A. Chen, P. Chen, B. G. Cheon, K. Chilikin, R. Chistov, I. -S. Cho, K. Cho, Y. Choi, J. Dalseno, M. Danilov, Z. Drasal, A. Drutskoy, S. Eidelman, D. Epifanov, S. Esen, J. E. Fast, M. Feindt, V. Gaur, N. Gabyshev, A. Garmash, Y. M. Goh, B. Golob, T. Hara, K. Hayasaka, H. Hayashii, Y. Hoshi, W. -S. Hou, Y. B. Hsiung, H. J. Hyun, T. Iijima, A. Ishikawa, M. Iwabuchi, Y. Iwasaki, I. Jaegle, T. Julius, J. H. Kang, N. Katayama, T. Kawasaki, H. Kichimi, H. O. Kim, J. B. Kim, K. T. Kim, M. J. Kim, Y. J. Kim, K. Kinoshita, B. R. Ko, N. Kobayashi, S. Koblitz, S. Korpar, P. Krizan, T. Kuhr, T. Kumita, A. Kuzmin, Y-J. Kwon, J. S. Lange, S. -H. Lee, J. Li, J. Libby, C. Liu, D. Liventsev, R. Louvot, J. MacNaughton, D. Matvienko, S. McOnie, K. Miyabayashi, H. Miyata, Y. Miyazaki, R. Mizuk, G. B. Mohanty, R. Mussa, Y. Nagasaka, E. Nakano, M. Nakao, H. Nakazawa, Z. Natkaniec, S. Neubauer, S. Nishida, K. Nishimura, O. Nitoh, T. Nozaki, T. Ohshima, S. Okuno, S. L. Olsen, Y. Onuki, P. Pakhlov, G. Pakhlova, H. Park, T. K. Pedlar, R. Pestotnik, M. Petric, L. E. Piilonen, A. Poluektov, M. Ritter, M. Roehrken, S. Ryu, H. Sahoo, Y. Sakai, T. Sanuki, O. Schneider, C. Schwanda, A. J. Schwartz, K. Senyo, O. Seon, M. E. Sevior, M. Shapkin, V. Shebalin, T. -A. Shibata, J. -G. Shiu, B. Shwartz, F. Simon, P. Smerkol, Y. -S. Sohn, A. Sokolov, E. Solovieva, S. Stanic, M. Staric, M. Sumihama, G. Tatishvili, Y. Teramoto, I. Tikhomirov, K. Trabelsi, M. Uchida, S. Uehara, T. Uglov, Y. Unno, S. Uno, S. E. Vahsen, G. Varner, K. E. Varvell, A. Vinokurova, C. H. Wang, X. L. Wang, Y. Watanabe, J. Wicht, E. Won, B. D. Yabsley, Y. Yamashita, C. Z. Yuan, V. Zhilich, A. Zupanc

    PHYSICAL REVIEW LETTERS   108 ( 3 )   2012年1月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We report the first observations of the spin-singlet bottomonium states h(b)(1P) and h(b)(2P). The states are produced in the reaction e(+)e(-) --&gt; h(b)(nP)pi(+)pi(-) using a 121.4 fb(-1) data sample collected at energies near the Y(5S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. We determine M[h(b)(1P)] = (9898.2(-1.0-1.1)(+1.1+1.0)) MeV/c(2) and M[h(b)(2P)] = (10 259.8 +/- 0.6(-1.0)(+1.4)) MeV/c(2), which correspond to P-wave hyperfine splittings Delta M-HF = (+1.7 +/- 1.5) and (+0.5(-1.2)(+1.6)) MeV/c(2), respectively. The significances of the h(b)(1P) and h(b)(2P) are 5.5 sigma and 11.2 sigma, respectively. We find that the production of the h(b)(1P) and h(b)(2P) is not suppressed relative to the production of the Y(1S), Y(2S), and Y(3S).

    DOI: 10.1103/PhysRevLett.108.032001

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    その他リンク: http://orcid.org/0000-0001-6373-2346

  • Evidence for Direct CP Violation in B-+/- -&gt; eta h(+/-) and Observation of B-0 -&gt; eta K-0 査読

    C. -T. Hoi, P. Chang, H. Aihara, D. M. Asner, T. Aushev, A. M. Bakich, K. Belous, V. Bhardwaj, B. Bhuyan, M. Bischofberger, A. Bondar, A. Bozek, M. Bracko, T. E. Browder, M. -C. Chang, Y. Chao, A. Chen, K. -F. Chen, P. Chen, G. Cheon, K. Chilikin, K. Cho, Y. Choi, M. Danilov, Z. Drasal, A. Drutskoy, S. Eidelman, J. E. Fast, V. Gaur, N. Gabyshev, Y. M. Goh, B. Golob, J. Haba, K. Hayasaka, Y. Hoshi, W. -S. Hou, Y. B. Hsiung, H. J. Hyun, K. Inami, A. Ishikawa, M. Iwabuchi, Y. Iwasaki, T. Iwashita, J. H. Kang, T. Kawasaki, H. J. Kim, H. O. Kim, J. B. Kim, J. H. Kim, K. T. Kim, M. J. Kim, K. Kinoshita, B. R. Ko, N. Kobayashi, P. Kodys, S. Korpar, P. Krizan, T. Kuhr, T. Kumita, Y. -J. Kwon, S. -H. Lee, J. Li, J. Libby, Z. Q. Liu, R. Louvot, D. Matvienko, S. McOnie, K. Miyabayashi, H. Miyata, G. B. Mohanty, A. Moll, E. Nakano, M. Nakao, S. Neubauer, S. Nishida, K. Nishimura, O. Nitoh, T. Ohshima, S. Okuno, C. W. Park, H. K. Park, T. K. Pedlar, R. Pestotnik, M. Petric, L. E. Piilonen, M. Ritter, M. Roehrken, H. Sahoo, Y. Sakai, T. Sanuki, O. Schneider, C. Schwanda, A. J. Schwartz, K. Senyo, M. E. Sevior, M. Shapkin, V. Shebalin, C. P. Shen, T. -A. Shibata, J. -G. Shiu, F. Simon, P. Smerkol, Y. -S. Sohn, A. Sokolov, E. Solovieva, M. Staric, M. Sumihama, S. Tanaka, G. Tatishvili, Y. Teramoto, K. Trabelsi, M. Uchida, T. Uglov, Y. Unno, S. Uno, G. Varner, C. H. Wang, M. -Z. Wang, P. Wang, Y. Watanabe, K. M. Williams, E. Won, J. Yamaoka, Y. Yamashita, Y. Yusa, V. Zhilich, A. Zupanc

    PHYSICAL REVIEW LETTERS   108 ( 3 )   031801-1 - 031801-6   2012年1月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We report measurements of the branching fractions and CP asymmetries for B-+/- -&gt; eta h(+/-) (h = K or pi) and the observation of the decay B-0 -&gt; eta K-0 from the final data sample of 772 x 10(6) B (B) over bar pairs collected with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. The measured branching fractions are B(B-+/- -&gt; eta K-+/-) = (2.12 +/- 0.23 +/- 0.11) x 10(-6), B(B-+/- -&gt; eta pi(+/-)) = (4.07 +/- 0.26 +/- 0.21) x 10(-6), and B(B-0 -&gt; eta K-0) = (1.27(-0.29)(+0.33) +/- 0.08) x 10(-6), where the last decay is observed for the first time with a significance of 5.4 standard deviations (sigma). We also find evidence for CP violation in the charged B modes, A(CP)(B-+/- -&gt; eta K-+/-) = -0.38 +/- 0.11 +/- 0.01 and A(CP)(B-+/- -&gt; eta pi(+/-)) = -0.19 +/- 0.06 +/- 0.01 with significances of 3.8 sigma and 3.0 sigma, respectively. For all measurements, the first and second uncertainties are statistical and systematic, respectively.

    DOI: 10.1103/PhysRevLett.108.031801

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  • Observation of D+ -&gt; K+eta(()&apos;()) and Search for CP Violation in D+ -&gt; pi(+)eta(()&apos;()) Decays 査読

    E. Won, B. R. Ko, I. Adachi, H. Aihara, K. Arinstein, D. M. Asner, T. Aushev, A. M. Bakich, E. Barberio, A. Bay, V. Bhardwaj, B. Bhuyan, M. Bischofberger, A. Bondar, A. Bozek, M. Bracko, J. Brodzicka, T. E. Browder, P. Chang, A. Chen, P. Chen, B. G. Cheon, K. Chilikin, I. -S. Cho, K. Cho, S. -K. Choi, Y. Choi, J. Dalseno, M. Danilov, Z. Dolezal, Z. Drasal, A. Drutskoy, S. Eidelman, J. E. Fast, V. Gaur, N. Gabyshev, A. Garmash, Y. M. Goh, B. Golob, J. Haba, T. Hara, K. Hayasaka, H. Hayashii, Y. Horii, Y. Hoshi, W. -S. Hou, Y. B. Hsiung, H. J. Hyun, T. Iijima, K. Inami, A. Ishikawa, R. Itoh, M. Iwabuchi, Y. Iwasaki, T. Iwashita, N. J. Joshi, T. Julius, J. H. Kang, N. Katayama, T. Kawasaki, H. Kichimi, H. J. Kim, H. O. Kim, J. B. Kim, J. H. Kim, K. T. Kim, M. J. Kim, S. K. Kim, Y. J. Kim, K. Kinoshita, N. Kobayashi, S. Koblitz, P. Kodys, S. Korpar, P. Krizan, T. Kumita, A. Kuzmin, Y. -J. Kwon, J. S. Lange, M. J. Lee, S. -H. Lee, J. Li, Y. Li, J. Libby, C. -L. Lim, C. Liu, Y. Liu, D. Liventsev, R. Louvot, S. McOnie, K. Miyabayashi, H. Miyata, Y. Miyazaki, R. Mizuk, G. B. Mohanty, Y. Nagasaka, E. Nakano, M. Nakao, H. Nakazawa, Z. Natkaniec, S. Neubauer, S. Nishida, K. Nishimura, O. Nitoh, S. Ogawa, T. Ohshima, S. Okuno, S. L. Olsen, Y. Onuki, P. Pakhlov, G. Pakhlova, H. Park, H. K. Park, K. S. Park, R. Pestotnik, M. Petric, L. E. Piilonen, M. Roehrken, S. Ryu, H. Sahoo, K. Sakai, Y. Sakai, T. Sanuki, O. Schneider, C. Schwanda, A. J. Schwartz, K. Senyo, O. Seon, M. E. Sevior, C. P. Shen, T. -A. Shibata, J. -G. Shiu, F. Simon, J. B. Singh, P. Smerkol, Y. -S. Sohn, A. Sokolov, E. Solovieva, S. Stanic, M. Staric, M. Sumihama, T. Sumiyoshi, S. Suzuki, G. Tatishvili, Y. Teramoto, K. Trabelsi, M. Uchida, S. Uehara, T. Uglov, Y. Unno, S. Uno, Y. Usov, S. E. Vahsen, G. Varner, A. Vinokurova, C. H. Wang, M. -Z. Wang, P. Wang, M. Watanabe, Y. Watanabe, K. M. Williams, B. D. Yabsley, Y. Yamashita, M. Yamauchi, Z. P. Zhang, V. Zhilich, V. Zhulanov, A. Zupanc, O. Zyukova

    PHYSICAL REVIEW LETTERS   107 ( 22 )   221801-1 - 221801-6   2011年11月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We report the first observation of the doubly Cabibbo-suppressed decays D+ -&gt; K+eta(()&apos;()) using a 791 fb(-1) data sample collected with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. The ratio of the branching fractions of doubly Cabibbo-suppressed relative to singly Cabibbo-suppressed D+ -&gt; pi(+)eta(()&apos;()) decays are B(D+ -&gt; K+eta) / B(D+ -&gt; pi(+)eta) =(3.06 +/- 0.43 +/- 0.14)% and B(D+ -&gt; K+eta&apos;)/B(D+-&gt;pi(+)eta&apos;) = (3.77 +/- 0.39 +/- 0.10)%. From these, we find that the relative final-state phase difference between the tree and annihilation amplitudes in D+ decays, delta(TA), is (72 +/- 9)degrees or (288 +/- 9)degrees. We also report the most precise measurements of CP asymmetries to date: A(CP)(D+-&gt;pi+eta) = (+1.74 +/- 1.13 +/- 0.19)% and A(CP)(D+-&gt;pi+eta&apos;) = (-0.12 +/- 1.12 +/- 0.17)%.

    DOI: 10.1103/PhysRevLett.107.221801

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  • Search for lepton-number-violating B<sup>+</sup>→D<sup>-</sup><sup>+</sup>′<sup>+</sup> decays 査読

    O. Seon, Y. J. Kwon, T. Iijima, I. Adachi, H. Aihara, D. M. Asner, T. Aushev, A. M. Bakich, E. Barberio, A. Bay, V. Bhardwaj, B. Bhuyan, M. Bischofberger, A. Bondar, A. Bozek, M. Bračko, J. Brodzicka, O. Brovchenko, T. E. Browder, P. Chang, A. Chen, P. Chen, B. G. Cheon, K. Chilikin, I. S. Cho, K. Cho, S. K. Choi, Y. Choi, J. Dalseno, Z. Doleal, A. Drutskoy, S. Eidelman, J. E. Fast, V. Gaur, N. Gabyshev, Y. M. Goh, B. Golob, J. Haba, K. Hara, T. Hara, K. Hayasaka, H. Hayashii, Y. Horii, Y. Hoshi, W. S. Hou, Y. B. Hsiung, H. J. Hyun, K. Inami, A. Ishikawa, R. Itoh, M. Iwabuchi, Y. Iwasaki, T. Iwashita, N. J. Joshi, T. Julius, J. H. Kang, N. Katayama, T. Kawasaki, H. Kichimi, H. J. Kim, H. O. Kim, J. B. Kim, J. H. Kim, K. T. Kim, M. J. Kim, S. K. Kim, Y. J. Kim, K. Kinoshita, B. R. Ko, N. Kobayashi, S. Koblitz, P. Kody, S. Korpar, P. Krian, T. Kuhr, T. Kumita, A. Kuzmin, S. H. Kyeong, J. S. Lange, M. J. Lee, S. H. Lee, J. Li, Y. Li, J. Libby, C. L. Lim, C. Liu, Y. Liu, D. Liventsev, R. Louvot, S. McOnie, K. Miyabayashi, H. Miyata, Y. Miyazaki, R. Mizuk, G. B. Mohanty, Y. Nagasaka, E. Nakano, M. Nakao, H. Nakazawa, Z. Natkaniec

    Physical Review D - Particles, Fields, Gravitation and Cosmology   84 ( 7 )   071106-1 - 071106-7   2011年10月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    We perform the first search for lepton-number-violating B +→D-+′+ decays, where and ′ stand for e or μ, using 772×106 BB̄ pairs accumulated at the Υ(4S) resonance with the Belle detector at the KEKB e+e- collider. No evidence for these decays has been found. Assuming uniform three-body phase space distributions for the D-+′+ decays, we set the following upper limits on the branching fractions at 90% confidence level: B(B+→D-e+e+)<2. 6×10-6, B(B+→D-e+μ +)<1.8×10-6 and B(B+→D -μ+μ+)<1.1×10-6. © 2011 American Physical Society.

    DOI: 10.1103/PhysRevD.84.071106

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  • First observation of radiative B-0 -&gt; phi K-0 gamma decays and measurements of their time-dependent CP violation 査読

    H. Sahoo, T. E. Browder, I. Adachi, D. M. Asner, V. Aulchenko, A. M. Bakich, E. Barberio, K. Belous, V. Bhardwaj, B. Bhuyan, A. Bondar, A. Bozek, M. Bracko, O. Brovchenko, A. Chen, P. Chen, B. G. Cheon, K. Cho, Y. Choi, J. Dalseno, Z. Dolezal, Z. Drasal, S. Eidelman, D. Epifanov, J. E. Fast, V. Gaur, N. Gabyshev, J. Haba, K. Hayasaka, H. Hayashii, Y. Horii, Y. Hoshi, W. -S. Hou, Y. B. Hsiung, H. J. Hyun, T. Iijima, K. Inami, A. Ishikawa, R. Itoh, M. Iwabuchi, Y. Iwasaki, T. Iwashita, N. J. Joshi, T. Julius, J. H. Kang, T. Kawasaki, C. Kiesling, H. J. Kim, H. O. Kim, J. B. Kim, J. H. Kim, K. T. Kim, M. J. Kim, S. K. Kim, Y. J. Kim, K. Kinoshita, B. R. Ko, N. Kobayashi, S. Koblitz, P. Kodys, S. Korpar, P. Krizan, T. Kuhr, R. Kumar, T. Kumita, A. Kuzmin, Y. -J. Kwon, J. S. Lange, M. J. Lee, S. -H. Lee, J. Li, Y. Li, J. Libby, C. -L. Lim, Z. Q. Liu, D. Liventsev, R. Louvot, D. Matvienko, S. McOnie, K. Miyabayashi, H. Miyata, Y. Miyazaki, R. Mizuk, G. B. Mohanty, T. Mori, M. Nakao, Z. Natkaniec, C. Ng, S. Nishida, K. Nishimura, O. Nitoh, T. Nozaki, T. Ohshima, S. Okuno, S. L. Olsen, Y. Onuki, P. Pakhlov, G. Pakhlova, C. W. Park, H. K. Park, T. Peng, R. Pestotnik, M. Petric, L. E. Piilonen, M. Prim, M. Roehrken, S. Ryu, K. Sakai, Y. Sakai, T. Sanuki, O. Schneider, C. Schwanda, A. J. Schwartz, K. Senyo, O. Seon, M. E. Sevior, M. Shapkin, V. Shebalin, T. -A. Shibata, J. -G. Shiu, B. Shwartz, F. Simon, P. Smerkol, Y. -S. Sohn, A. Sokolov, E. Solovieva, S. Stanic, M. Staric, M. Sumihama, K. Sumisawa, T. Sumiyoshi, S. Suzuki, G. Tatishvili, Y. Teramoto, K. Trabelsi, M. Uchida, T. Uglov, Y. Unno, S. Uno, Y. Ushiroda, S. E. Vahsen, G. Varner, A. Vinokurova, M. Watanabe, Y. Watanabe, K. M. Williams, E. Won, B. D. Yabsley, Y. Yamashita, C. Z. Yuan, Y. Yusa, C. C. Zhang, Z. P. Zhang, V. Zhilich, P. Zhou, V. Zhulanov, A. Zupanc

    PHYSICAL REVIEW D   84 ( 7 )   071101-1 - 071101-6   2011年10月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We report the first observation of the radiative decay B-0 -&gt; phi K-0 gamma using a data sample of 772 x 10(6) B (B) over bar pairs collected at the Gamma(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. We observe a signal of 37 +/- 8 events with a significance of 5.4 standard deviations including systematic uncertainties. The measured branching fraction is B(B-0 -&gt;phi K-0 gamma) = (2.74 +/- 0.60 +/- 0.32) x 10(-6), where the uncertainties are statistical and systematic, respectively. We also report the first measurements of time-dependent CP-violation parameters: S-phi K0s gamma = +0.74(-1.05)(+0.72)(stat)(-0.024)(+0.10)(syst) and A phi(0)(Ks)gamma = +0.35 +/- 0.58(stat)(-0.10)(+0.23)(syst). Furthermore, we measure B(B+ -&gt; phi K+gamma) = (2.48 +/- 0.30 +/- 0.24) x 10(-6), A(CP) = -0.03 +/- 0.11 +/- 0.08, and find that the signal is concentrated in the M-phi K mass region near threshold.

    DOI: 10.1103/PhysRevD.84.071101

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  • Observation of B- -&gt; (p)over-bar Lambda D-0 at Belle 査読

    P. Chen, M. -Z. Wang, I. Adachi, H. Aihara, D. M. Asner, V. Aulchenko, T. Aushev, A. M. Bakich, E. Barberio, K. Belous, B. Bhuyan, A. Bozek, M. Bracko, T. E. Browder, M. -C. Chang, P. Chang, Y. Chao, A. Chen, B. G. Cheon, I. -S. Cho, K. Cho, Y. Choi, J. Dalseno, M. Danilov, Z. Dolezal, Z. Drasal, S. Eidelman, J. E. Fast, M. Feindt, V. Gaur, Y. M. Goh, J. Haba, T. Hara, K. Hayasaka, H. Hayashii, Y. Hoshi, W. -S. Hou, Y. B. Hsiung, H. J. Hyun, A. Ishikawa, R. Itoh, M. Iwabuchi, Y. Iwasaki, T. Iwashita, T. Julius, J. H. Kang, P. Kapusta, N. Katayama, T. Kawasaki, H. Kichimi, C. Kiesling, H. O. Kim, J. B. Kim, J. H. Kim, K. T. Kim, M. J. Kim, Y. J. Kim, K. Kinoshita, B. R. Ko, N. Kobayashi, S. Koblitz, P. Krizan, T. Kuhr, A. Kuzmin, Y. -J. Kwon, J. S. Lange, S. -H. Lee, J. Li, Y. Li, J. Libby, C. Liu, Y. Liu, D. Liventsev, R. Louvot, D. Matvienko, S. McOnie, H. Miyata, Y. Miyazaki, G. B. Mohanty, Y. Nagasaka, E. Nakano, M. Nakao, Z. Natkaniec, S. Neubauer, S. Nishida, O. Nitoh, S. Ogawa, T. Ohshima, S. L. Olsen, Y. Onuki, P. Pakhlov, G. Pakhlova, H. Park, H. K. Park, T. K. Pedlar, R. Pestotnik, M. Peters, M. Petric, L. E. Piilonen, M. Ritter, M. Roehrken, S. Ryu, H. Sahoo, Y. Sakai, T. Sanuki, O. Schneider, C. Schwanda, K. Senyo, M. E. Sevior, M. Shapkin, C. P. Shen, T. -A. Shibata, J. -G. Shiu, B. Shwartz, F. Simon, J. B. Singh, P. Smerkol, Y. -S. Sohn, E. Solovieva, S. Stanic, M. Staric, M. Sumihama, T. Sumiyoshi, G. Tatishvili, Y. Teramoto, M. Uchida, S. Uehara, Y. Unno, S. Uno, G. Varner, K. E. Varvell, C. H. Wang, X. L. Wang, Y. Watanabe, K. M. Williams, E. Won, B. D. Yabsley, Y. Yamashita, M. Yamauchi, Z. P. Zhang

    PHYSICAL REVIEW D   84 ( 7 )   071501-1 - 071501-7   2011年10月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We study B- meson decays to (p) over bar Lambda D-(*)0 final states using a sample of 657 x 10(6) B (B) over bar events collected at the Gamma(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. The observed branching fraction for B- -&gt; (p) over bar Lambda D-0 is (1.43(-0.25)(+0.28) +/-0.18) x 10(-5) with a significance of 8.1 standard deviations, where the uncertainties are statistical and systematic, respectively. Most of the signal events have the (p) over bar Lambda mass peaking near threshold. No significant signal is observed for B- -&gt; (p) over bar Lambda D-0 and the corresponding upper limit on the branching fraction is 4.8 x 10(-5) at the 90% confidence level.

    DOI: 10.1103/PhysRevD.84.071501

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  • Search for charmonium and charmoniumlike states in γ(2S) radiative decays 査読

    Wang X.L, Shen C.P, Yuan C.Z, Wang P, Adachi I, Aihara H, Asner D.M, Aushev T, Bakich A.M, Barberio E, Belous K, Bhuyan B, Bozek A, Bracko M, Browder T.E, Chang M.-C, Chen A, Cheon B.G, Chilikin K, Cho I.-S, Cho K, Choi Y, Dalseno J, Danilov M, Dolezal Z, Eidelman S, Fast J.E, Feindt M, Gaur V, Goh Y.M, Haba J, Hayasaka K, Hayashii H, Hoshi Y, Hsiung Y.B, Hyun H.J, Iijima T, Ishikawa A, Itoh R, Iwabuchi M, Iwasaki Y, Iwashita T, Julius T, Kang J.H, Katayama N, Kawasaki T, Kichimi H, Kim H.J, Kim H.O, Kim J.B, Kim J.H, Kim K.T, Kim M.J, Kim Y.J, Kinoshita K, Ko B.R, Kobayashi N, Koblitz S, Krizan P, Kuzmin A, Kwon Y.-J, Lange J.S, Lee S.-H, Li J, Li X.R, Li Y, Libby J, Lim C.-L, Liu C, Liventsev D, Louvot R, Matvienko D, McOnie S, Miyabayashi K, Miyata H, Miyazaki Y, Mohanty G.B, Mussa R, Nagasaka Y, Nakao M, Nakazawa H, Natkaniec Z, Neubauer S, Nishida S, Nishimura K, Nitoh O, Ogawa S, Ohshima T, Okuno S, Olsen S.L, Onuki Y, Pakhlov P, Pakhlova G, Park H, Park H.K, Pedlar T.K, Pestotnik R, Petric M, Piilonen L.E, Ritter M, Ryu S, Sahoo H, Sakai Y, Sanuki T, Schneider O, Schwanda C, Senyo K, Seon O, Sevior M.E, Shapkin M, Shibata T.-A, Shiu J.-G, Shwartz B, Simon F, Smerkol P, Sohn Y.-S, Solovieva E, Stanic S, Stari? M, Sumihama M, Tatishvili G, Teramoto Y, Trabelsi K, Uchida M, Uehara S, Unno Y, Uno S, Usov Y, Varner G, Wang C.H, Wang M.-Z, Watanabe Y, Won E, Yabsley B.D, Yamashita Y, Yamauchi M, Zhang Z.P, Zhilich V

    Physical Review D - Particles, Fields, Gravitation and Cosmology   84 ( 7 )   2011年10月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.1103/PhysRevD.84.071107

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    その他リンク: http://orcid.org/0000-0002-1018-219X

  • Bounds on the width, mass difference and other properties of X(3872) → π+ π-J/ψ decays 査読

    S. K. Choi, S. L. Olsen, K. Trabelsi, I. Adachi, H. Aihara, K. Arinstein, D. M. Asner, T. Aushev, A. M. Bakich, E. Barberio, A. Bay, K. Belous, V. Bhardwaj, B. Bhuyan, M. Bischofberger, A. Bondar, A. Bozek, M. Bračko, M. Bračko, J. Brodzicka, O. Brovchenko, T. E. Browder, P. Chang, A. Chen, P. Chen, B. G. Cheon, K. Chilikin, I. S. Cho, K. Cho, Y. Choi, J. Dalseno, J. Dalseno, Z. Doležal, Z. Drásal, A. Drutskoy, S. Eidelman, D. Epifanov, J. E. Fast, V. Gaur, N. Gabyshev, A. Garmash, Y. M. Goh, B. Golob, B. Golob, J. Haba, T. Hara, K. Hayasaka, H. Hayashii, Y. Horii, Y. Hoshi, W. S. Hou, Y. B. Hsiung, H. J. Hyun, T. Iijima, K. Inami, A. Ishikawa, R. Itoh, M. Iwabuchi, Y. Iwasaki, T. Iwashita, N. J. Joshi, T. Julius, J. H. Kang, N. Katayama, T. Kawasaki, H. Kichimi, H. J. Kim, H. O. Kim, J. B. Kim, J. H. Kim, K. T. Kim, M. J. Kim, S. K. Kim, Y. J. Kim, K. Kinoshita, B. R. Ko, N. Kobayashi, N. Kobayashi, S. Koblitz, P. Kodyš, S. Korpar, S. Korpar, P. Križan, P. Križan, T. Kuhr, T. Kumita, A. Kuzmin, Y. J. Kwon, J. S. Lange, M. J. Lee, S. H. Lee, J. Li, X. Li, Y. Li, J. Libby, C. L. Lim, C. Liu, Y. Liu, D. Liventsev, R. Louvot

    Physical Review D - Particles, Fields, Gravitation and Cosmology   84 ( 5 )   2011年9月

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    © 2011 American Physical Society. We present results from a study of X(3872) → ππJ/ψ decays produced via exclusive B → KX(3872) decays. We determine the mass to be MX(3872) = (3871.85 ± 0.27(stat) ± 0.19(syst)) MeV, a 90% confidence level upper limit on the natural width of ΓX(3872) &lt; 1.2 MeV, the product branching fraction B(B+ → K+X(3872)) X B(X(3872) → π+π-J/ψ) = (8.63±0.82(stat)±0.52(syst)) × 10-6, and a ratio of branching fractions B(B0 → K0X(3872))/B(B+ → K+X(3872)) = 0.50±0.14(stat) ±0.04(syst). The difference in mass between the X(3872) → π+π- J/ψ signals in B+ and B0 decays is ΔMX(3872) = (-0.71 ± 0.96(stat) ± 0.19(syst)) MeV. A search for a charged partner of the X(3872) in the decays B¯0 → K-X+ or B+ → K0X+, X+ → π+ π0J/ψ resulted in upper limits on the product branching fractions for these processes that are well below expectations for the case that the X(3872) is the neutral member of an isospin triplet. In addition, we examine possible JPC quantum number assignments for the X(3872) based on comparisons of angular correlations between final state particles in X(3872) → π+ π-J/ψ decays with simulated data for JPC values

    DOI: 10.1103/PhysRevD.84.052004

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  • Bounds on the width, mass difference and other properties of X(3872) -&gt; pi(+)pi(-) J/psi decays 査読

    S. -K. Choi, S. L. Olsen, K. Trabelsi, I. Adachi, H. Aihara, K. Arinstein, D. M. Asner, T. Aushev, A. M. Bakich, E. Barberio, A. Bay, K. Belous, V. Bhardwaj, B. Bhuyan, M. Bischofberger, A. Bondar, A. Bozek, M. Bracko, J. Brodzicka, O. Brovchenko, T. E. Browder, P. Chang, A. Chen, P. Chen, B. G. Cheon, K. Chilikin, I. -S. Cho, K. Cho, Y. Choi, J. Dalseno, Z. Dolezal, Z. Drasal, A. Drutskoy, S. Eidelman, D. Epifanov, J. E. Fast, V. Gaur, N. Gabyshev, A. Garmash, Y. M. Goh, B. Golob, J. Haba, T. Hara, K. Hayasaka, H. Hayashii, Y. Horii, Y. Hoshi, W. -S. Hou, Y. B. Hsiung, H. J. Hyun, T. Iijima, K. Inami, A. Ishikawa, R. Itoh, M. Iwabuchi, Y. Iwasaki, T. Iwashita, N. J. Joshi, T. Julius, J. H. Kang, N. Katayama, T. Kawasaki, H. Kichimi, H. J. Kim, H. O. Kim, J. B. Kim, J. H. Kim, K. T. Kim, M. J. Kim, S. K. Kim, Y. J. Kim, K. Kinoshita, B. R. Ko, N. Kobayashi, S. Koblitz, P. Kodys, S. Korpar, P. Krizan, T. Kuhr, T. Kumita, A. Kuzmin, Y. -J. Kwon, J. S. Lange, M. J. Lee, S. -H. Lee, J. Li, X. Li, Y. Li, J. Libby, C. -L. Lim, C. Liu, Y. Liu, D. Liventsev, R. Louvot, D. Matvienko, S. McOnie, K. Miyabayashi, H. Miyata, Y. Miyazaki, R. Mizuk, G. B. Mohanty, R. Mussa, Y. Nagasaka, E. Nakano, M. Nakao, Z. Natkaniec, S. Neubauer, S. Nishida, K. Nishimura, O. Nitoh, S. Ogawa, T. Ohshima, S. Okuno, Y. Onuki, P. Pakhlov, G. Pakhlova, H. Park, H. K. Park, K. S. Park, R. Pestotnik, M. Petric, L. E. Piilonen, A. Poluektov, M. Roehrken, S. Ryu, H. Sahoo, K. Sakai, Y. Sakai, T. Sanuki, O. Schneider, C. Schwanda, A. J. Schwartz, K. Senyo, O. Seon, M. E. Sevior, M. Shapkin, V. Shebalin, T. -A. Shibata, J. -G. Shiu, F. Simon, J. B. Singh, P. Smerkol, Y. -S. Sohn, A. Sokolov, E. Solovieva, S. Stanic, M. Staric, M. Sumihama, T. Sumiyoshi, G. Tatishvili, Y. Teramoto, M. Uchida, S. Uehara, T. Uglov, Y. Unno, S. Uno, S. E. Vahsen, G. Varner, K. E. Varvell, A. Vinokurova, C. H. Wang, M. -Z. Wang, P. Wang, X. L. Wang, M. Watanabe, Y. Watanabe, K. M. Williams, E. Won, B. D. Yabsley, Y. Yamashita, M. Yamauchi, C. Z. Yuan, C. C. Zhang, V. Zhilich, V. Zhulanov, A. Zupanc, O. Zyukova

    PHYSICAL REVIEW D   84 ( 5 )   052004-1 - 052004-16   2011年9月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We present results from a study of X(3872) -&gt; pi pi J/psi decays produced via exclusive B -&gt; KX(3872) decays. We determine the mass to be M-X(3872) = (3871.85 +/- 0.27(stat) +/- 0.19(syst)) MeV, a 90% confidence level upper limit on the natural width of Gamma(X(3872)) &lt; 1.2 MeV, the product branching fraction B(B+ -&gt; K+X(3872)) X B(X(3872) -&gt; pi(+)pi(-) J/psi) = (8.63 +/- 0.82(stat) +/- 0.52(syst)) X 10(-6), and a ratio of branching fractions B(B-0 -&gt; (KX)-X-0(3872))/B(B+ -&gt; K+X(3872)) = 0.50 +/- 0.14(stat)) +/- 0.04(syst). The difference in mass between the X(3872) -&gt; pi(+)pi(-) J/psi signals in B+ and B-0 decays is Delta M-X(3872) = (-0.71 +/- 0.96(stat) +/- 0.19(syst)) MeV. A search for a charged partner of the X(3872) in the decays &lt;(B)over bar&gt;(0) -&gt; K-X+ or B+ -&gt; (KX+)-X-0, X+ -&gt; pi(+)pi(0) J/psi resulted in upper limits on the product branching fractions for these processes that are well below expectations for the case that the X(3872) is the neutral member of an isospin triplet. In addition, we examine possible J(PC) quantum number assignments for the X(3872) based on comparisons of angular correlations between final state particles in X(3872) -&gt; pi(+)pi(-) J/psi decays with simulated data for J(PC) values of 1(++) and 2(-+). We examine the influence of rho-omega interference in the M(pi(+)pi(-)) spectrum. The analysis is based on a 711 fb(-1) data sample that contains 772 x 10(6) B (B) over bar meson pairs collected at the gamma(4S) resonance in the Belle detector at the KEKB e(+)e(-) collider.

    DOI: 10.1103/PhysRevD.84.052004

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  • Status Report from Tau subgroup of the HFAG 査読

    Swagato Banerjee, Kiyoshi Hayasaka, Hisaki Hayashii, Alberto Lusiani, J. Michael Roney, Boris Shwartz

    Nuclear Physics B - Proceedings Supplements   218 ( 1 )   329 - 334   2011年9月

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    掲載種別:研究論文(学術雑誌)  

    The aim of Tau subgroup of the HFAG is to provide average values of the mass and branching fractions of the tau lepton. Using the branching fractions, we present tests of charged current lepton universality and obtain estimates for |Vus|. We also summarize the status of searches for lepton flavor violating decays of the tau lepton. © 2011 Elsevier B.V.

    DOI: 10.1016/j.nuclphysbps.2011.06.053

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  • Search for CP violation in τ<sup>±</sup>→KS0π <sup>±</sup>ν<inf>τ</inf> decays at Belle 査読

    Bischofberger M, Hayashii H, Adamczyk K, Aihara H, Aulchenko V, Bakich A.M, Balagura V, Barberio E, Belous K, Bozek A, Bra?ko M, Browder T.E, Chen P, Cheon B.G, Chiang C.-C, Cho I.-S, Cho K, Choi Y, Danilov M, Dole?al Z, Drutskoy A, Eidelman S, Epifanov D, Golob B, Ha H, Haba J, Hayasaka K, Horii Y, Hoshi Y, Hou W.-S, Hsiung Y.B, Hyun H.J, Inami K, Ishikawa A, Itoh R, Iwabuchi M, Iwasaki Y, Julius T, Kang J.H, Kawai H, Kawasaki T, Kiesling C, Kim H.O, Kim M.J, Kim Y.J, Kinoshita K, Ko B.R, Kody? P, Kri?an P, Kwon Y.-J, Kyeong S.-H, Lange J.S, Lee M.J, Lee S.-H, Li J, Li Y, Liu C, Louvot R, MacNaughton J, McOnie S, Miyabayashi K, Miyata H, Miyazaki Y, Mizuk R, Mohanty G.B, Moll A, Mori T, Nagasaka Y, Nakano E, Nakao M, Nakazawa H, Nishida S, Nishimura K, Nitoh O, Ohshima T, Okuno S, Pakhlova G, Park H, Park H.K, Petri? M, Piilonen L.E, R{\"o}hrken M, Ryu S, Sahoo H, Sakai Y, Schneider O, Schwanda C, Senyo K, Shapkin M, Shiu J.-G, Shwartz B, Simon F, Smerkol P, Sohn Y.-S, Stani? S, Stari? M, Sumiyoshi T, Teramoto Y, Trabelsi K, Uehara S, Uglov T, Uno S, Varner G, Vinokurova A, Vossen A, Wang C.H, Wang P, Watanabe M, Watanabe Y, Won E, Yamamoto H, Yamashita Y, Yuan C.Z, Zhou P, Zhulanov V, Zivko T

    Physical Review Letters   107 ( 13 )   2011年9月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.1103/PhysRevLett.107.131801

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    その他リンク: http://orcid.org/0000-0002-1018-219X

  • Observation of Transverse Polarization Asymmetries of Charged Pion Pairs in e(+)e(-) Annihilation near root s=10.58 GeV 査読

    A. Vossen, R. Seidl, I. Adachi, H. Aihara, T. Aushev, V. Balagura, W. Bartel, M. Bischofberger, A. Bondar, M. Bracko, T. E. Browder, M. -C. Chang, A. Chen, P. Chen, B. G. Cheon, K. Cho, Y. Choi, S. Eidelman, M. Feindt, V. Gaur, N. Gabyshev, A. Garmash, B. Golob, M. Grosse Perdekamp, J. Haba, K. Hayasaka, Y. Horii, Y. Hoshi, W. -S. Hou, H. J. Hyun, K. Inami, A. Ishikawa, M. Iwabuchi, Y. Iwasaki, T. Iwashita, N. J. Joshi, H. Kichimi, H. O. Kim, M. J. Kim, B. R. Ko, T. Kumita, J. S. Lange, M. J. Lee, S. -H. Lee, M. Leitgab, Y. Li, C. Liu, D. Liventsev, R. Louvot, S. McOnie, H. Miyata, Y. Miyazaki, R. Mizuk, G. B. Mohanty, E. Nakano, S. Nishida, O. Nitoh, A. Ogawa, T. Ohshima, S. Okuno, G. Pakhlova, H. Park, H. K. Park, M. Petric, L. E. Piilonen, S. Ryu, H. Sahoo, Y. Sakai, O. Schneider, C. Schwanda, O. Seon, M. Shapkin, V. Shebalin, T. -A. Shibata, J. -G. Shiu, P. Smerkol, Y. -S. Sohn, E. Solovieva, S. Stanic, M. Staric, M. Sumihama, T. Sumiyoshi, Y. Teramoto, M. Uchida, S. Uehara, T. Uglov, Y. Unno, S. Uno, G. Varner, A. Vinokurova, C. H. Wang, M. -Z. Wang, P. Wang, Y. Watanabe, E. Won, B. D. Yabsley, Y. Yamashita, V. Zhilich, P. Zhou, V. Zhulanov

    PHYSICAL REVIEW LETTERS   107 ( 7 )   072004-1 - 072004-7   2011年8月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    The interference fragmentation function translates the fragmentation of a quark with a transverse projection of the spin into an azimuthal asymmetry of two final-state hadrons. In e(+)e(-) annihilation the product of two interference fragmentation functions is measured. We report nonzero asymmetries for pairs of charge-ordered pi(+)pi(-) pairs, which indicate a significant interference fragmentation function in this channel. The results are obtained from a 672 fb(-1) data sample that contains 711 x 10(6) pi(+)pi(-) pairs and was collected at and near the Y(4S) resonance, with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider.

    DOI: 10.1103/PhysRevLett.107.072004

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  • Observation of X(3872) -&gt; J/psi gamma and Search for X(3872) -&gt; psi 'gamma in B Decays 査読

    V. Bhardwaj, K. Trabelsi, J. B. Singh, S. -K. Choi, S. L. Olsen, I. Adachi, K. Adamczyk, D. M. Asner, V. Aulchenko, T. Aushev, T. Aziz, A. M. Bakich, E. Barberio, K. Belous, B. Bhuyan, M. Bischofberger, A. Bondar, M. Bracko, J. Brodzicka, T. E. Browder, A. Chen, P. Chen, B. G. Cheon, K. Cho, Y. Choi, J. Dalseno, Z. Dolezal, S. Eidelman, D. Epifanov, V. Gaur, N. Gabyshev, B. Golob, J. Haba, K. Hayasaka, H. Hayashii, Y. Horii, Y. Hoshi, W. -S. Hou, Y. B. Hsiung, H. J. Hyun, T. Iijima, K. Inami, A. Ishikawa, M. Iwabuchi, Y. Iwasaki, T. Iwashita, N. J. Joshi, T. Julius, J. H. Kang, T. Kawasaki, C. Kiesling, H. O. Kim, J. B. Kim, J. H. Kim, K. T. Kim, M. J. Kim, S. K. Kim, Y. J. Kim, K. Kinoshita, B. R. Ko, N. Kobayashi, S. Korpar, P. Krizan, R. Kumar, T. Kumita, A. Kuzmin, Y. -J. Kwon, J. S. Lange, M. J. Lee, S. -H. Lee, Y. Li, J. Libby, C. -L. Lim, D. Liventsev, R. Louvot, D. Matvienko, S. McOnie, K. Miyabayashi, H. Miyata, Y. Miyazaki, R. Mizuk, G. B. Mohanty, R. Mussa, E. Nakano, M. Nakao, H. Nakazawa, Z. Natkaniec, C. Ng, S. Nishida, O. Nitoh, T. Nozaki, T. Ohshima, S. Okuno, Y. Onuki, G. Pakhlova, C. W. Park, H. K. Park, R. Pestotnik, M. Petric, L. E. Piilonen, M. Roehrken, H. Sahoo, K. Sakai, Y. Sakai, T. Sanuki, O. Schneider, C. Schwanda, O. Seon, M. Shapkin, V. Shebalin, T. -A. Shibata, J. -G. Shiu, B. Shwartz, P. Smerkol, Y. -S. Sohn, A. Sokolov, E. Solovieva, S. Stanic, M. Staric, T. Sumiyoshi, G. Tatishvili, Y. Teramoto, M. Uchida, S. Uehara, T. Uglov, Y. Unno, S. Uno, Y. Usov, G. Varner, A. Vossen, X. L. Wang, M. Watanabe, Y. Watanabe, K. M. Williams, B. D. Yabsley, Y. Yamashita, C. Z. Yuan, C. C. Zhang, Z. P. Zhang, V. Zhilich, P. Zhou, V. Zhulanov, A. Zupanc

    PHYSICAL REVIEW LETTERS   107 ( 9 )   091803-1 - 091803-6   2011年8月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We report a study of B -&gt; (J/psi gamma)K and B -&gt; (psi'gamma)K decay modes using 772 X 10(6) B (B) over bar events collected at the Y(4S) resonance with the Belle detector at the KEKB energy-asymmetric e(+)e(-) collider. We observe X(3872) -&gt; J/psi gamma and report the first evidence for chi(c2) -&gt; J/psi gamma in B -&gt; (X-c (c) over bar gamma)K decays, while in a search for X(3872) -&gt; psi'gamma no significant signal is found. We measure the branching fractions, B(B-+/- -&gt; X(3872)K-+/-)B(X(3872) -&gt; J/psi gamma) = (1.78(-0.44)(+0.48) +/- 0.12) X 10(-6), B(B-+/- -&gt; chi K-c2(+/-)) = (1.11(-0.34)(+0.36) +/- 0.09) X 10(-5), B(B+ -&gt; X(3872)K+)B(X(3872) -&gt; psi'gamma) &lt; 3.45 X 10(-6) (upper limit at 90% C. L.), and also provide upper limits for other searches.

    DOI: 10.1103/PhysRevLett.107.091803

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  • Evidence for the Suppressed Decay B- -&gt; DK-, D -&gt; K+pi- 査読

    Y. Horii, K. Trabelsi, H. Yamamoto, I. Adachi, H. Aihara, K. Arinstein, V. Aulchenko, T. Aushev, V. Balagura, E. Barberio, K. Belous, B. Bhuyan, M. Bischofberger, A. Bozek, M. Bracko, T. E. Browder, M. -C. Chang, P. Chang, A. Chen, P. Chen, B. G. Cheon, C. -C. Chiang, I. -S. Cho, K. Cho, Y. Choi, Z. Dolezal, S. Eidelman, M. Feindt, V. Gaur, N. Gabyshev, A. Garmash, B. Golob, H. Ha, J. Haba, K. Hayasaka, Y. Hoshi, W. -S. Hou, Y. B. Hsiung, H. J. Hyun, T. Iijima, K. Inami, A. Ishikawa, R. Itoh, M. Iwabuchi, Y. Iwasaki, T. Iwashita, N. J. Joshi, T. Julius, J. H. Kang, T. Kawasaki, H. Kichimi, C. Kiesling, H. J. Kim, H. O. Kim, M. J. Kim, Y. J. Kim, K. Kinoshita, B. R. Ko, N. Kobayashi, S. Korpar, P. Krizan, T. Kuhr, R. Kumar, Y. -J. Kwon, M. J. Lee, S. -H. Lee, J. Li, C. Liu, D. Liventsev, R. Louvot, A. Matyja, S. McOnie, K. Miyabayashi, H. Miyata, Y. Miyazaki, G. B. Mohanty, A. Moll, T. Mori, N. Muramatsu, E. Nakano, H. Nakazawa, Z. Natkaniec, S. Neubauer, S. Nishida, O. Nitoh, T. Ohshima, S. Okuno, Y. Onuki, P. Pakhlov, G. Pakhlova, C. W. Park, H. K. Park, R. Pestotnik, M. Petric, L. E. Piilonen, A. Poluektov, M. Prim, K. Prothmann, M. Roehrken, S. Ryu, H. Sahoo, Y. Sakai, O. Schneider, C. Schwanda, A. J. Schwartz, K. Senyo, O. Seon, M. E. Sevior, M. Shapkin, V. Shebalin, C. P. Shen, T. -A. Shibata, J. -G. Shiu, F. Simon, P. Smerkol, Y. -S. Sohn, E. Solovieva, S. Stanic, M. Staric, M. Sumihama, T. Sumiyoshi, S. Suzuki, S. Tanaka, Y. Teramoto, M. Uchida, S. Uehara, T. Uglov, Y. Unno, S. Uno, Y. Usov, G. Varner, A. Vinokurova, A. Vossen, C. H. Wang, P. Wang, M. Watanabe, Y. Watanabe, J. Wicht, E. Won, B. D. Yabsley, Y. Yamashita, D. Zander, Z. P. Zhang, V. Zhulanov, A. Zupanc

    PHYSICAL REVIEW LETTERS   106 ( 23 )   231803-1 - 231803-6   2011年6月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    The suppressed decay chain B- -&gt; DK-, D -&gt; K+pi(-), where D indicates a (D) over bar (0) or D-0 state, provides important information on the CP-violating angle phi(3). We measure the ratio R-DK of the decay rates to the favored mode B- -&gt; DK-, D -&gt; K+pi(-) to be R-DK = [1.63(-0.41)(+0.44)(stat)(-0.13)(+0.07)(syst)] x 10(-2), which indicates the first evidence of the signal with a significance of 4.1 sigma. We also measure the asymmetry A(DK) between the charge-conjugate decays to be A(DK) = -0.39(-0.28)(+0.26)(stat)(-0.03)(+0.04)(syst). The results are based on the full 772 x 10(6) B (B) over bar pair data sample collected at the Gamma(4S) resonance with the Belle detector.

    DOI: 10.1103/PhysRevLett.106.231803

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  • Search for lepton-flavor-violating tau decays into a lepton and a vector meson 査読

    Y. Miyazaki, H. Aihara, K. Arinstein, V. Aulchenko, A. M. Bakich, V. Balagura, E. Barberio, A. Bay, K. Belous, V. Bhardwaj, M. Bischofberger, A. Bondar, A. Bozek, M. Bracko, T. E. Browder, A. Chen, P. Chen, B. G. Cheon, C. -C. Chiang, I. -S. Cho, K. Cho, K. -S. Choi, Y. Choi, J. Dalseno, M. Danilov, Z. Dolezal, A. Drutskoy, S. Eidelman, D. Epifanov, N. Gabyshev, A. Garmash, B. Golob, H. Ha, J. Haba, K. Hara, K. Hayasaka, H. Hayashii, Y. Horii, Y. Hoshi, W. -S. Hou, Y. B. Hsiung, H. J. Hyun, T. Iijima, K. Inami, R. Itoh, M. Iwabuchi, N. J. Joshi, T. Julius, D. H. Kah, J. H. Kang, H. Kawai, T. Kawasaki, C. Kiesling, H. J. Kim, H. O. Kim, M. J. Kim, Y. J. Kim, K. Kinoshita, B. R. Ko, P. Krizan, T. Kumita, A. Kuzmin, Y. -J. Kwon, S. -H. Kyeong, J. S. Lange, M. J. Lee, S. -H. Lee, Y. Li, C. Liu, Y. Liu, D. Liventsev, R. Louvot, S. McOnie, K. Miyabayashi, H. Miyata, R. Mizuk, G. B. Mohanty, A. Moll, T. Mori, Y. Nagasaka, E. Nakano, M. Nakao, H. Nakazawa, Z. Natkaniec, S. Nishida, O. Nitoh, S. Ogawa, T. Ohshima, S. Okuno, G. Pakhlova, C. W. Park, H. Park, H. K. Park, R. Pestotnik, M. Petric, L. E. Piilonen, A. Poluektov, M. Roehrken, S. Ryu, H. Sahoo, K. Sakai, Y. Sakai, O. Schneider, C. Schwanda, K. Senyo, M. E. Sevior, M. Shapkin, V. Shebalin, C. P. Shen, J. -G. Shiu, B. Shwartz, F. Simon, P. Smerkol, Y. -S. Sohn, A. Sokolov, S. Stanic, M. Staric, T. Sumiyoshi, Y. Teramoto, K. Trabelsi, S. Uehara, T. Uglov, Y. Unno, S. Uno, Y. Usov, S. E. Vahsen, G. Varner, A. Vinokurova, A. Vossen, C. H. Wang, P. Wang, M. Watanabe, Y. Watanabe, K. M. Williams, E. Won, H. Yamamoto, Y. Yamashita, Z. P. Zhang, V. Zhilich, V. Zhulanov, T. Zivko, A. Zupanc, O. Zyukova

    PHYSICS LETTERS B   699 ( 4 )   251 - 257   2011年5月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:ELSEVIER SCIENCE BV  

    We search for lepton-flavor-violating tau -&gt; lV(0) decays, where l is an electron or muon and V(0) is one of the vector mesons rho(0), phi, omega, K*(0) and (K) over bar*(0). We use 854 fb(-1) of data collected with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. No evidence for a signal is found in any decay mode, and we obtain 90% confidence level upper limits on the individual branching fractions in the range (1.2-8.4) x 10(-8). (C) 2011 Elsevier B.V. All rights reserved.

    DOI: 10.1016/j.physletb.2011.04.011

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  • Measurement of the decay B-0 -&gt; pi(-) l(+) nu and determination of vertical bar V-ub vertical bar 査読

    H. Ha, E. Won, I. Adachi, H. Aihara, T. Aziz, A. M. Bakich, V. Balagura, E. Barberio, A. Bay, K. Belous, V. Bhardwaj, B. Bhuyan, M. Bischofberger, A. Bondar, A. Bozek, M. Bracko, T. E. Browder, Y. Chao, A. Chen, P. Chen, B. G. Cheon, C. -C. Chiang, I. -S. Cho, K. Cho, K. -S. Choi, Y. Choi, J. Dalseno, M. Danilov, Z. Dolezal, A. Drutskoy, W. Dungel, S. Eidelman, N. Gabyshev, B. Golob, J. Haba, K. Hayasaka, H. Hayashii, Y. Horii, Y. Hoshi, W. -S. Hou, Y. B. Hsiung, H. J. Hyun, T. Iijima, K. Inami, R. Itoh, M. Iwabuchi, Y. Iwasaki, N. J. Joshi, T. Julius, J. H. Kang, T. Kawasaki, C. Kiesling, H. J. Kim, H. O. Kim, M. J. Kim, S. K. Kim, Y. J. Kim, K. Kinoshita, B. R. Ko, S. Korpar, P. Krizan, T. Kuhr, T. Kumita, A. Kuzmin, Y. -J. Kwon, S. -H. Kyeong, J. S. Lange, M. J. Lee, S. -H. Lee, Y. Li, A. Limosani, C. Liu, Y. Liu, D. Liventsev, R. Louvot, S. McOnie, K. Miyabayashi, H. Miyata, Y. Miyazaki, G. B. Mohanty, T. Mori, Y. Nagasaka, E. Nakano, M. Nakao, H. Nakazawa, Z. Natkaniec, S. Neubauer, S. Nishida, K. Nishimura, O. Nitoh, T. Nozaki, S. Ogawa, T. Ohshima, S. Okuno, S. L. Olsen, P. Pakhlov, G. Pakhlova, C. W. Park, H. Park, H. K. Park, R. Pestotnik, M. Petri, L. E. Piilonen, M. Roehrken, S. Ryu, H. Sahoo, Y. Sakai, O. Schneider, C. Schwanda, A. J. Schwartz, K. Senyo, M. E. Sevior, M. Shapkin, C. P. Shen, J. -G. Shiu, F. Simon, P. Smerkol, Y. -S. Sohn, A. Sokolov, S. Stanic, M. Staric, T. Sumiyoshi, Y. Teramoto, K. Trabelsi, S. Uehara, T. Uglov, Y. Unno, S. Uno, S. E. Vahsen, G. Varner, K. E. Varvell, A. Vossen, C. H. Wang, M. -Z. Wang, P. Wang, M. Watanabe, Y. Watanabe, Y. Yamashita, Z. P. Zhang, P. Zhou, V. Zhulanov, T. Zivko, A. Zupanc

    PHYSICAL REVIEW D   83 ( 7 )   071101-1 - 071101-6   2011年4月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We present a measurement of the charmless semileptonic decay B-0 -&gt; pi(-) l(+) nu using a data sample containing 657 x 10(6) B (B) over bar events collected with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider operating near the Y(4S) resonance. We determine the total branching fraction of the decay, B(B-0 -&gt; pi(-) l(+) nu) = (1.49 +/- 0.04(stat) +/- 0.07(syst)) x 10(-)4. We also report a new precise measurement of the differential decay rate and extract the Cabibbo-Kobayashi-Maskawa matrix element vertical bar V-ub vertical bar using model-independent and model-dependent approaches. From a simultaneous fit to the measured differential decay rate and lattice QCD results, we obtain vertical bar V-ub vertical bar (3.43 +/- 0: 33) x 10(-3), where the error includes both experimental and theoretical uncertainties.

    DOI: 10.1103/PhysRevD.83.071101

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  • Erratum: Study of the decays B→D<inf>s1</inf>(2536)<sup>+</sup>D <sup>̄</sup>(<sup>*</sup>) (Physical Review D - Particles, Fields, Gravitation and Cosmology (2011) 83:5 (059902)) 査読

    Aushev T, Adachi I, Arinstein K, Aulchenko V, Bakich A.M, Balagura V, Bhardwaj V, Bischofberger M, Bondar A, Bozek A, Bra?ko M, Browder T.E, Chang M.-C, Chen A, Chen P, Cheon B.G, Chistov R, Cho I.-S, Cho K, Choi K.-S, Choi Y, Dalseno J, Danilov M, Drutskoy A, Eidelman S, Epifanov D, Gaur V, Gabyshev N, Garmash A, Golob B, Ha H, Hayasaka K, Hayashii H, Horii Y, Hoshi Y, Hou W.-S, Hyun H.J, Iijima T, Inami K, Ishikawa A, Itoh R, Iwabuchi M, Iwasaki Y, Iwashita T, Julius T, Kang J.H, Kawasaki T, Kim H.J, Kim H.O, Kim J.H, Kim M.J, Kim Y.J, Kinoshita K, Ko B.R, Kody P, Krian P, Kuhr T, Kumita T, Kuzmin A, Kwon Y.-J, Kyeong S.-H, Lange J.S, Lee S.-H, Li J, Liu C, Liu Y, Liventsev D, Louvot R, Matyja A, McOnie S, Miyabayashi K, Miyata H, Miyazaki Y, Mizuk R, Mohanty G.B, Nakao M, Nakazawa H, Natkaniec Z, Neubauer S, Nishida S, Nitoh O, Ogawa S, Ohshima T, Olsen S.L, Ostrowicz W, Pakhlov P, Pakhlova G, Park H.K, Pestotnik R, Petri? M, Piilonen L.E, Poluektov A, Prothmann K, R{\"o}hrken M, Ryu S, Sahoo H, Sakai K, Sakai Y, Schneider O, Schwanda C, Senyo K, Seon O, Sevior M.E, Shapkin M, Shebalin V, Shen C.P, Shiu J.-G, Shwartz B, Simon F, Singh J.B, Smerkol P, Sohn Y.-S, Sokolov A, Solovieva E, Stani? S, Stari? M, Sumihama M, Sumiyoshi T, Tanaka S, Teramoto Y, Tikhomirov I, Trabelsi K, Uchida M, Uglov T, Uno S, Usov Y, Vahsen S.E, Varner G, Vervink K, Vinokurova A, Vossen A, Wang C.H, Wang M.-Z, Wang P, Watanabe Y, Williams K.M, Yabsley B.D, Yamashita Y, Yusa Y, Zhang Z.P, Zhilich V, Zhou P, Zhulanov V, Zupanc A, Zyukova O

    Physical Review D - Particles, Fields, Gravitation and Cosmology   83 ( 5 )   2011年3月

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    掲載種別:研究論文(学術雑誌)  

    DOI: 10.1103/PhysRevD.83.059902

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  • Study of the decays B→Ds1(2536)+D ̄(*) 査読

    T. Aushev, I. Adachi, K. Arinstein, K. Arinstein, V. Aulchenko, V. Aulchenko, A. M. Bakich, V. Balagura, V. Bhardwaj, M. Bischofberger, A. Bondar, A. Bondar, A. Bozek, M. Bračko, M. Bračko, T. E. Browder, M. C. Chang, A. Chen, P. Chen, B. G. Cheon, R. Chistov, I. S. Cho, K. Cho, K. S. Choi, Y. Choi, J. Dalseno, J. Dalseno, M. Danilov, A. Drutskoy, S. Eidelman, S. Eidelman, D. Epifanov, D. Epifanov, V. Gaur, N. Gabyshev, N. Gabyshev, A. Garmash, A. Garmash, B. Golob, B. Golob, H. Ha, K. Hayasaka, H. Hayashii, Y. Horii, Y. Hoshi, W. S. Hou, H. J. Hyun, T. Iijima, K. Inami, A. Ishikawa, R. Itoh, M. Iwabuchi, Y. Iwasaki, T. Iwashita, T. Julius, J. H. Kang, T. Kawasaki, H. J. Kim, H. O. Kim, J. H. Kim, M. J. Kim, Y. J. Kim, K. Kinoshita, B. R. Ko, P. Kodyš, P. Križan, P. Križan, T. Kuhr, T. Kumita, A. Kuzmin, A. Kuzmin, Y. J. Kwon, S. H. Kyeong, J. S. Lange, S. H. Lee, J. Li, C. Liu, Y. Liu, D. Liventsev, R. Louvot, A. Matyja, S. McOnie, K. Miyabayashi, H. Miyata, Y. Miyazaki, R. Mizuk, G. B. Mohanty, M. Nakao, H. Nakazawa, Z. Natkaniec, S. Neubauer, S. Nishida, O. Nitoh, S. Ogawa, T. Ohshima, S. L. Olsen, S. L. Olsen, W. Ostrowicz, P. Pakhlov, G. Pakhlova

    Physical Review D - Particles, Fields, Gravitation and Cosmology   83 ( 5 )   2011年3月

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    掲載種別:研究論文(学術雑誌)  

    We report a study of the decays B→Ds1(2536) +D̄(*), where D ̄(*) is D̄0, D- or D*-, using a sample of 657×106BB̄ pairs collected at the Υ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. The branching fractions of the decays B+→Ds1(2536)+D ̄0, B0→Ds1(2536)+D- and B0→Ds1(2536)+D*- multiplied by that of Ds1(2536)+→(D *0K++D*+K0) are found to be (3.97±0.85±0.56)×10-4, (2.75±0. 62±0.36)×10-4 and (5.01±1.21±0.70) ×10-4, respectively. The ratio B(Ds1→D *0K+)/B(Ds1→D* +K0) is measured to be 0.88±0.24±0.08. © 2011 American Physical Society.

    DOI: 10.1103/PhysRevD.83.051102

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  • Study of the decays B -&gt; Ds1(2536)(+) (D)over-bar(()*()) 査読

    T. Aushev, I. Adachi, K. Arinstein, V. Aulchenko, A. M. Bakich, V. Balagura, V. Bhardwaj, M. Bischofberger, A. Bondar, A. Bozek, M. Bracko, T. E. Browder, M-C Chang, A. Chen, P. Chen, B. G. Cheon, R. Chistov, I-S Cho, K. Cho, K-S Choi, Y. Choi, J. Dalseno, M. Danilov, A. Drutskoy, S. Eidelman, D. Epifanov, V. Gaur, N. Gabyshev, A. Garmash, B. Golob, H. Ha, K. Hayasaka, H. Hayashii, Y. Horii, Y. Hoshi, W-S Hou, H. J. Hyun, T. Iijima, K. Inami, A. Ishikawa, R. Itoh, M. Iwabuchi, Y. Iwasaki, T. Iwashita, T. Julius, J. H. Kang, T. Kawasaki, H. J. Kim, H. O. Kim, J. H. Kim, M. J. Kim, Y. J. Kim, K. Kinoshita, B. R. Ko, P. Kodys, P. Krizan, T. Kuhr, T. Kumita, A. Kuzmin, Y-J Kwon, S-H Kyeong, J. S. Lange, S-H Lee, J. Li, C. Liu, Y. Liu, D. Liventsev, R. Louvot, A. Matyja, S. McOnie, K. Miyabayashi, H. Miyata, Y. Miyazaki, R. Mizuk, G. B. Mohanty, M. Nakao, H. Nakazawa, Z. Natkaniec, S. Neubauer, S. Nishida, O. Nitoh, S. Ogawa, T. Ohshima, S. L. Olsen, W. Ostrowicz, P. Pakhlov, G. Pakhlova, H. K. Park, R. Pestotnik, M. Petric, L. E. Piilonen, A. Poluektov, K. Prothmann, M. Roehrken, S. Ryu, H. Sahoo, K. Sakai, Y. Sakai, O. Schneider, C. Schwanda, K. Senyo, O. Seon, M. E. Sevior, M. Shapkin, V. Shebalin, C. P. Shen, J-G Shiu, B. Shwartz, F. Simon, J. B. Singh, P. Smerkol, Y-S Sohn, A. Sokolov, E. Solovieva, S. Stanic, M. Staric, M. Sumihama, T. Sumiyoshi, S. Tanaka, Y. Teramoto, I. Tikhomirov, K. Trabelsi, M. Uchida, T. Uglov, S. Uno, Y. Usov, S. E. Vahsen, G. Varner, K. Vervink, A. Vinokurova, A. Vossen, C. H. Wang, M-Z Wang, P. Wang, Y. Watanabe, K. M. Williams, B. D. Yabsley, Y. Yamashita, Y. Yusa, Z. P. Zhang, V. Zhilich, P. Zhou, V. Zhulanov, A. Zupanc, O. Zyukova

    PHYSICAL REVIEW D   83 ( 5 )   051102-1 - 051102-6   2011年3月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We report a study of the decays B -&gt; D-s1(2536)+ (D) over bar (()*()), where (D) over bar (()*()) is (D) over bar (0), D- or D*(-), using a sample of 657 x 10(6)B (B) over bar pairs collected at the Y(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. The branching fractions of the decays B+ -&gt; D-s1(2536)(+) (D) over bar (0), B-0 -&gt; D-s1(2536)D-+(-) and B-0 -&gt; D-s1(2536)D+*(-) multiplied by that of D-s1(2536)(+) -&gt; (D*K-0(+) + D*K-+(0)) are found to be (3.97 +/- 0.85 +/- 0.56) x 10(-4), (2.75 +/- 0.62 +/- 0.36) x 10(-4) and (5.01 +/- 1.21 +/- 0.70) x 10(-4), respectively. The ratio B(D-s1 -&gt; D*K-0(+))/B(D-s1 -&gt; D*K-+(0)) is measured to be 0.88 +/- 0.24 +/- 0.08.

    DOI: 10.1103/PhysRevD.83.051102

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  • Measurement of e(+)e(-) -&gt; Ds(*)+Ds(*)- cross sections near threshold using initial-state radiation 査読

    G. Pakhlova, I. Adachi, H. Aihara, K. Arinstein, T. Aushev, T. Aziz, A. M. Bakich, V. Balagura, E. Barberio, A. Bay, K. Belous, V. Bhardwaj, B. Bhuyan, A. Bondar, A. Bozek, M. Bracko, T. E. Browder, A. Chen, P. Chen, B. G. Cheon, R. Chistov, I. -S. Cho, K. Cho, K. -S. Choi, S. -K. Choi, Y. Choi, J. Dalseno, M. Danilov, Z. Dolezal, A. Drutskoy, S. Eidelman, D. Epifanov, N. Gabyshev, A. Garmash, B. Golob, H. Ha, J. Haba, K. Hayasaka, H. Hayashii, Y. Horii, Y. Hoshi, W. -S. Hou, H. J. Hyun, T. Iijima, K. Inami, R. Itoh, M. Iwabuchi, Y. Iwasaki, N. J. Joshi, T. Julius, J. H. Kang, P. Kapusta, H. Kawai, T. Kawasaki, C. Kiesling, H. J. Kim, H. O. Kim, M. J. Kim, S. K. Kim, Y. J. Kim, K. Kinoshita, B. R. Ko, S. Korpar, P. Krizan, T. Kumita, A. Kuzmin, Y. -J. Kwon, S. -H. Kyeong, J. S. Lange, M. J. Lee, S. -H. Lee, C. Liu, Y. Liu, D. Liventsev, R. Louvot, A. Matyja, S. McOnie, K. Miyabayashi, H. Miyata, Y. Miyazaki, R. Mizuk, G. B. Mohanty, T. Mori, Y. Nagasaka, E. Nakano, M. Nakao, H. Nakazawa, S. Nishida, K. Nishimura, O. Nitoh, T. Nozaki, S. Ogawa, T. Ohshima, S. Okuno, S. L. Olsen, P. Pakhlov, H. Palka, C. W. Park, H. Park, H. K. Park, R. Pestotnik, M. Petric, L. E. Piilonen, A. Poluektov, M. Roehrken, S. Ryu, H. Sahoo, K. Sakai, Y. Sakai, O. Schneider, C. Schwanda, K. Senyo, M. E. Sevior, M. Shapkin, V. Shebalin, C. P. Shen, J. -G. Shiu, B. Shwartz, F. Simon, P. Smerkol, Y. -S. Sohn, A. Sokolov, E. Solovieva, S. Stanic, M. Staric, T. Sumiyoshi, Y. Teramoto, I. Tikhomirov, K. Trabelsi, S. Uehara, T. Uglov, Y. Unno, S. Uno, G. Varner, K. E. Varvell, A. Vinokurova, A. Vossen, C. H. Wang, M. -Z. Wang, P. Wang, M. Watanabe, Y. Watanabe, R. Wedd, E. Won, Y. Yamashita, C. Z. Yuan, Z. P. Zhang, V. Zhilich, P. Zhou, V. Zhulanov, T. Zivko, A. Zupanc, O. Zyukova

    PHYSICAL REVIEW D   83 ( 1 )   011101-1 - 011101-7   2011年1月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We report a measurement of exclusive e(+)e(-) -&gt; Ds(*)+Ds(*)- cross sections as a function of center-of-mass energy near the Ds(*)+Ds(*)- threshold with initial-state radiation. The analysis is based on a data sample collected with the Belle detector with an integrated luminosity of 967 fb(-1).

    DOI: 10.1103/PhysRevD.83.011101

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  • Tau lepton physics at Belle 査読

    Kiyoshi Hayasaka

    Journal of Physics: Conference Series   335 ( 1 )   2011年

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    記述言語:英語   掲載種別:研究論文(国際会議プロシーディングス)   出版者・発行元:Institute of Physics Publishing  

    We report the recent results of a search for lepton-flavor-violating τ decays and a search for CP violation in τ → νK0 Sπ using a large data sample accumulated with the Belle detector at the KEKB asymmetric-energy e+e- collider. The sensitivity to these modes is significantly improved compared to previous experiments.

    DOI: 10.1088/1742-6596/335/1/012029

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  • Measurement of eta eta production in two-photon collisions 査読

    S. Uehara, Y. Watanabe, H. Nakazawa, I. Adachi, H. Aihara, K. Arinstein, T. Aushev, A. M. Bakich, V. Balagura, E. Barberio, A. Bay, K. Belous, M. Bischofberger, A. Bondar, G. Bonvicini, A. Bozek, M. Bracko, T. E. Browder, P. Chang, Y. Chao, A. Chen, P. Chen, B. G. Cheon, I. -S. Cho, Y. Choi, J. Dalseno, Z. Dolezal, A. Drutskoy, S. Eidelman, P. Goldenzweig, H. Ha, J. Haba, K. Hayasaka, H. Hayashii, Y. Horii, Y. Hoshi, W. -S. Hou, Y. B. Hsiung, H. J. Hyun, R. Itoh, M. Iwabuchi, M. Iwasaki, Y. Iwasaki, T. Julius, D. H. Kah, J. H. Kang, P. Kapusta, H. Kawai, T. Kawasaki, H. Kichimi, H. J. Kim, H. O. Kim, J. H. Kim, M. J. Kim, B. R. Ko, P. Kodys, S. Korpar, P. Krizan, P. Krokovny, Y. -J. Kwon, S. -H. Kyeong, J. S. Lange, M. J. Lee, S. -H. Lee, Y. Liu, D. Liventsev, R. Louvot, A. Matyja, S. McOnie, K. Miyabayashi, H. Miyata, Y. Miyazaki, R. Mizuk, G. B. Mohanty, T. Mori, E. Nakano, M. Nakao, Z. Natkaniec, S. Nishida, K. Nishimura, O. Nitoh, S. Ogawa, T. Ohshima, S. Okuno, S. L. Olsen, C. W. Park, H. Park, H. K. Park, R. Pestotnik, M. Petric, L. E. Piilonen, A. Poluektov, S. Ryu, H. Sahoo, Y. Sakai, O. Schneider, C. Schwanda, K. Senyo, M. E. Sevior, M. Shapkin, C. P. Shen, J. -G. Shiu, B. Shwartz, F. Simon, P. Smerkol, A. Sokolov, E. Solovieva, S. Stanic, M. Staric, T. Sumiyoshi, Y. Teramoto, T. Uglov, Y. Unno, S. Uno, G. Varner, K. Vervink, C. H. Wang, P. Wang, X. L. Wang, R. Wedd, E. Won, Y. Yamashita, Z. P. Zhang, V. Zhilich, P. Zhou, T. Zivko, A. Zupanc

    PHYSICAL REVIEW D   82 ( 11 )   114031-1 - 114031-21   2010年12月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We report the first measurement of the differential cross section for the process gamma gamma -&gt; eta eta in the kinematic range above the eta eta threshold, 1.096 GeV &lt; W &lt; 3.8 GeV over nearly the entire solid angle range, vertical bar cos theta*vertical bar &lt;= 0.9 or &lt;= 1.0 depending on W, where W and theta* are the energy and eta scattering angle, respectively, in the gamma gamma center-of-mass system. The results are based on a 393 fb(-1) data sample collected with the Belle detector at the KEKB e(+)e(-) collider. In the W range 1.1-2.0 GeV/c(2) we perform an analysis of resonance amplitudes for various partial waves, and at higher energy we compare the energy and the angular dependences of the cross section with predictions of theoretical models and extract contributions of the chi(cJ) charmonia.

    DOI: 10.1103/PhysRevD.82.114031

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  • First Measurement of Inclusive B -&gt; X-s eta Decays 査読

    K. Nishimura, T. E. Browder, I. Adachi, H. Aihara, K. Arinstein, T. Aushev, A. M. Bakich, V. Balagura, E. Barberio, K. Belous, V. Bhardwaj, M. Bischofberger, A. Bondar, A. Bozek, M. Bracko, M. -C. Chang, Y. Chao, A. Chen, K. -F. Chen, P. Chen, B. G. Cheon, C. -C. Chiang, I. -S. Cho, Y. Choi, J. Dalseno, M. Danilov, Z. Dolezal, A. Drutskoy, S. Eidelman, N. Gabyshev, B. Golob, H. Ha, J. Haba, T. Hara, K. Hayasaka, H. Hayashii, Y. Horii, Y. Hoshi, W. -S. Hou, H. J. Hyun, T. Iijima, K. Inami, R. Itoh, M. Iwabuchi, Y. Iwasaki, N. J. Joshi, T. Julius, J. H. Kang, P. Kapusta, H. Kawai, T. Kawasaki, H. Kichimi, C. Kiesling, H. J. Kim, H. O. Kim, M. J. Kim, Y. J. Kim, K. Kinoshita, B. R. Ko, P. Kodys, S. Korpar, P. Krizan, T. Kumita, A. Kuzmin, Y. -J. Kwon, S. -H. Kyeong, J. S. Lange, M. J. Lee, S. -H. Lee, J. Li, C. Liu, Y. Liu, D. Liventsev, R. Louvot, A. Matyja, S. McOnie, K. Miyabayashi, H. Miyata, Y. Miyazaki, G. B. Mohanty, T. Mori, E. Nakano, M. Nakao, H. Nakazawa, Z. Natkaniec, S. Nishida, S. Ogawa, T. Ohshima, S. L. Olsen, W. Ostrowicz, G. Pakhlova, C. W. Park, H. Park, H. K. Park, K. S. Park, R. Pestotnik, M. Petric, L. E. Piilonen, M. Roehrken, S. Ryu, H. Sahoo, Y. Sakai, O. Schneider, C. Schwanda, A. J. Schwartz, K. Senyo, O. Seon, M. E. Sevior, M. Shapkin, C. P. Shen, J. -G. Shiu, F. Simon, P. Smerkol, A. Sokolov, E. Solovieva, M. Staric, T. Sumiyoshi, S. Suzuki, Y. Teramoto, K. Trabelsi, S. Uehara, T. Uglov, Y. Unno, S. Uno, G. Varner, K. E. Varvell, K. Vervink, C. H. Wang, M. -Z. Wang, P. Wang, Y. Watanabe, J. Wicht, K. M. Williams, E. Won, Y. Yamashita, M. Yamauchi, C. C. Zhang, Z. P. Zhang, P. Zhou, V. Zhulanov, T. Zivko, A. Zupanc, O. Zyukova

    PHYSICAL REVIEW LETTERS   105 ( 19 )   191803-1 - 191803-6   2010年11月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We report a first measurement of inclusive B -&gt; X-s eta decays, where X-s is a charmless state with unit strangeness. The measurement is based on a pseudoinclusive reconstruction technique and uses a sample of 657 x 10(6)B (B) over bar pairs accumulated with the Belle detector at the KEKB e(+)e(-) collider. For M-X1 &lt; 2.6 GeV/c(2), we measure a branching fraction of [26.1 +/- 3.0(stat)(-2.1)(+1.9)(syst)(-7.1)(+4.0)(model)] x 10(-5) and a direct CP asymmetry of A(CP) = 0.13 +/- 0.04(-0.03)(+0.02). Over half of the signal occurs in the range M-X2 &gt; 1.8 GeV/c(2).

    DOI: 10.1103/PhysRevLett.105.191803

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  • Search for CP-violating charge asymmetry in B-+/- -&gt; J/psi K-+/- decays 査読

    K. Sakai, T. Kawasaki, H. Aihara, K. Arinstein, T. Aushev, A. M. Bakich, V. Balagura, E. Barberio, K. Belous, V. Bhardwaj, B. Bhuyan, M. Bischofberger, A. Bondar, A. Bozek, M. Bracko, T. E. Browder, M-C Chang, Y. Chao, A. Chen, K-F Chen, P. Chen, B. G. Cheon, C-C Chiang, K. Cho, Y. Choi, J. Dalseno, Z. Dolezal, Z. Drasal, W. Dungel, S. Eidelman, M. Feindt, B. Golob, H. Ha, J. Haba, K. Hayasaka, H. Hayashii, Y. Horii, Y. Hoshi, W-S Hou, H. J. Hyun, K. Inami, R. Itoh, M. Iwabuchi, Y. Iwasaki, J. H. Kang, H. Kawai, H. Kichimi, C. Kiesling, H. J. Kim, J. H. Kim, Y. J. Kim, B. R. Ko, S. Korpar, P. Krizan, P. Krokovny, T. Kuhr, T. Kumita, A. Kuzmin, Y-J Kwon, S-H Kyeong, J. S. Lange, M. J. Lee, J. Li, A. Limosani, C. Liu, D. Liventsev, R. Louvot, A. Matyja, S. McOnie, K. Miyabayashi, H. Miyata, Y. Miyazaki, G. B. Mohanty, D. Mohapatra, E. Nakano, M. Nakao, Z. Natkaniec, S. Neubauer, S. Nishida, O. Nitoh, S. Ogawa, T. Ohshima, S. Okuno, S. L. Olsen, G. Pakhlova, H. Palka, C. W. Park, H. Park, H. K. Park, R. Pestotnik, M. Petric, L. E. Piilonen, M. Prim, M. Roehrken, S. Ryu, H. Sahoo, Y. Sakai, O. Schneider, A. J. Schwartz, K. Senyo, O. Seon, M. E. Sevior, M. Shapkin, C. P. Shen, J-G Shiu, B. Shwartz, F. Simon, P. Smerkol, A. Sokolov, E. Solovieva, S. Stanic, M. Staric, K. Sumisawa, T. Sumiyoshi, G. N. Taylor, Y. Teramoto, K. Trabelsi, T. Tsuboyama, S. Uehara, T. Uglov, Y. Unno, S. Uno, G. Varner, K. E. Varvell, K. Vervink, C. H. Wang, M-Z Wang, P. Wang, M. Watanabe, Y. Watanabe, R. Wedd, E. Won, Y. Yamashita, C. C. Zhang, Z. P. Zhang, P. Zhou, T. Zivko, A. Zupanc, O. Zyukova

    PHYSICAL REVIEW D   82 ( 9 )   091104-1 - 091104-7   2010年11月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We present the result of a search for charge asymmetry in B-+/- -&gt; J/psi K-+/- decays using 772 X 10(6) B (B) over bar pairs collected at the Y(4S) resonance by the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. The CP-violating charge asymmetry is measured to be A(CP)(B+ -&gt; J/psi K+) = [-0.76 +/- 0.50 (stat) +/- 0.22 (syst)]%.

    DOI: 10.1103/PhysRevD.82.091104

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  • Observation of an enhancement in e(+)e(-) -&gt; gamma(1S)pi(+)pi(-), gamma(2S)pi(+)pi(-), and gamma(3S)pi(+)pi(-) production near root s=1.89 GeV 査読

    K. -F. Chen, W. -S. Hou, I. Adachi, H. Aihara, T. Aushev, A. M. Bakich, V. Balagura, A. Bay, K. Belous, V. Bhardwaj, M. Bischofberger, A. Bondar, A. Bozek, M. Bracko, J. Brodzicka, T. E. Browder, M. -C. Chang, P. Chang, Y. Chao, A. Chen, P. Chen, B. G. Cheon, C. -C. Chiang, R. Chistov, I. -S. Cho, Y. Choi, J. Dalseno, A. Drutskoy, S. Eidelman, D. Epifanov, N. Gabyshev, P. Goldenzweig, H. Ha, B. -Y. Han, K. Hayasaka, H. Hayashii, M. Hazumi, Y. Hoshi, Y. B. Hsiung, H. J. Hyun, T. Iijima, K. Inami, R. Itoh, M. Iwabuchi, Y. Iwasaki, T. Julius, D. H. Kah, J. H. Kang, N. Katayama, C. Kiesling, H. O. Kim, Y. I. Kim, Y. J. Kim, K. Kinoshita, B. R. Ko, S. Korpar, P. Krizan, P. Krokovny, Y. -J. Kwon, S. -H. Kyeong, J. S. Lange, S. -H. Lee, J. Li, C. Liu, Y. Liu, D. Liventsev, R. Louvot, J. MacNaughton, A. Matyja, S. McOnie, K. Miyabayashi, H. Miyata, Y. Miyazaki, R. Mizuk, Y. Nagasaka, E. Nakano, M. Nakao, S. Nishida, K. Nishimura, O. Nitoh, T. Nozaki, S. Ogawa, T. Ohshima, S. Okuno, G. Pakhlova, H. Park, H. K. Park, R. Pestotnik, M. Petric, L. E. Piilonen, S. Ryu, H. Sahoo, K. Sakai, Y. Sakai, O. Schneider, C. Schwanda, A. J. Schwartz, R. Seidl, K. Senyo, M. Shapkin, C. P. Shen, J. -G. Shiu, B. Shwartz, P. Smerkol, A. Sokolov, E. Solovieva, S. Stanic, M. Staric, K. Sumisawa, T. Sumiyoshi, S. Suzuki, Y. Teramoto, K. Trabelsi, S. Uehara, T. Uglov, Y. Unno, S. Uno, Y. Ushiroda, G. Varner, K. E. Varvell, K. Vervink, C. H. Wang, M. -Z. Wang, P. Wang, Y. Watanabe, R. Wedd, J. Wicht, E. Won, B. D. Yabsley, Y. Yamashita, C. Z. Yuan, Z. P. Zhang, V. Zhulanov, A. Zupanc, O. Zyukova

    PHYSICAL REVIEW D   82 ( 9 )   091106(R)   2010年11月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We measure the production cross sections for e(+)e(-) -&gt; gamma(1S)pi(+)pi(-), gamma(2S)pi(+)pi(-), and gamma(3S)pi(+)pi(-) as a function of root 5 between 10.83 GeVand 11.02 GeV. The data consist of 8.1 fb(-1) collected with the Belle detector at the KEKB e(+)e(-) collider. We observe enhanced production in all three final states that does not agree well with the conventional gamma(10860) line shape. A fit using a Breit-Wigner resonance shape yields a peak mass of [10 888.4(-2.6)(+2.7)(stat) +/- 1.2(syst)] MeV/c(2) and a width of [30.7(-7.0)(+8.3)(stat) +/- 3.1(syst) MeV/c(2).

    DOI: 10.1103/PhysRevD.82.091106

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  • Observation of an enhancement in ${e}^{+}{e}^{ { - } }{\rightarrow}{\Upsilon}(1S){ { \pi } }^{+}{ { \pi } }^{ { - } }$, ${\Upsilon}(2S){ { \pi } }^{+}{ { \pi } }^{ { - } }$, and ${\Upsilon}(3S){ { \pi } }^{+}{ { \pi } }^{ { - } }$ production near $\sqrt{s}=10.89\text{ }\text{ }{GeV}$ 査読

    The Belle collaboration, K, Hayasaka は

    Phys. Rev. D   82 ( 9 )   091106-1 - 091106-6   2010年11月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.1103/PhysRevD.82.091106

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  • Observation of B-s(0) -&gt; D-s(()*()) + D-s(()*()) Using e(+)e(-) Collisions and a Determination of the B-s-(B)over-bar(s) Width Difference Delta Gamma(s) 査読

    S. Esen, A. J. Schwartz, I. Adachi, H. Aihara, K. Arinstein, V. Aulchenko, T. Aushev, T. Aziz, A. M. Bakich, V. Balagura, E. Barberio, A. Bay, M. Bischofberger, A. Bondar, A. Bozek, M. Bracko, T. E. Browder, M-C Chang, P. Chang, A. Chen, P. Chen, B. G. Cheon, C-C Chiang, Y. Choi, J. Dalseno, M. Dash, Z. Dolezal, Z. Drasal, A. Drutskoy, S. Eidelman, P. Goldenzweig, B. Golob, H. Ha, J. Haba, T. Hara, K. Hayasaka, T. Higuchi, Y. Hoshi, W-S Hou, Y. B. Hsiung, H. J. Hyun, T. Iijima, K. Inami, R. Itoh, M. Iwabuchi, N. J. Joshi, T. Julius, J. H. Kang, T. Kawasaki, H. Kichimi, H. J. Kim, H. O. Kim, J. H. Kim, Y. J. Kim, K. Kinoshita, B. R. Ko, P. Kodys, S. Korpar, P. Krizan, P. Krokovny, T. Kuhr, T. Kumita, Y-J Kwon, S-H Kyeong, J. S. Lange, S-H Lee, Y. Liu, D. Liventsev, R. Louvot, A. Matyja, S. McOnie, H. Miyata, R. Mizuk, G. B. Mohanty, E. Nakano, M. Nakao, H. Nakazawa, Z. Natkaniec, S. Neubauer, S. Nishida, O. Nitoh, T. Ohshima, S. Okuno, S. L. Olsen, P. Pakhlov, C. W. Park, H. Park, H. K. Park, M. Petric, L. E. Piilonen, M. Roehrken, S. Ryu, H. Sahoo, Y. Sakai, O. Schneider, C. Schwanda, K. Senyo, M. E. Sevior, M. Shapkin, C. P. Shen, J-G Shiu, P. Smerkol, E. Solovieva, M. Staric, K. Sumisawa, T. Sumiyoshi, Y. Teramoto, K. Trabelsi, S. Uehara, Y. Unno, S. Uno, P. Urquijo, Y. Usov, G. Varner, K. E. Varvell, K. Vervink, C. H. Wang, M-Z Wang, P. Wang, Y. Watanabe, R. Wedd, J. Wicht, E. Won, B. D. Yabsley, Y. Yamashita, Z. P. Zhang, V. Zhilich, A. Zupanc

    PHYSICAL REVIEW LETTERS   105 ( 20 )   201802-1 - 201802-6   2010年11月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We have made the first observation of B-s(0) -&gt; D-s(()*()+) D-s(()*()-) decays using 23.6 fb(-1) of data recorded by the Belle experiment running on the Y(5S) resonance. The branching fractions are measured to be B(B-s(0) -&gt; Ds+Ds-) = (1.03(-0.32-0.25)(+0.39+0.26))% B(B-s(0) -&gt; Ds*D-+/-(s)-/+) = (2.75(-0.71)(+0.83) +/- 0.69)%, and B(B-s(0) -&gt; D-s*(+) D-s*(-)) = (3.08(-1.04-0.86)(+1.22+0.85))%; the sum is B[B-s(0) -&gt; D-s(()*()+) D-s(()*()-)] = (6.85(-1.30-1.80)(+1.53+1.79))%. Assuming B-s(0) -&gt; D-s(()*()+) D-s(()*()-) saturates decays to CP-even final states, the branching fraction determines the ratio Delta Gamma(s)/cos phi, where Delta Gamma(s) is the difference in widths between the two B-s-(B) over bar (s) mass eigenstates, and phi is a CP-violating weak phase. Taking CP violation to be negligibly small, we obtain Delta Gamma(s)/Delta Gamma(s) = 0.147(-0.030)(+0.036)(stat)(-0.041)(+0.042)(syst), where Gamma(s) is the mean decay width.

    DOI: 10.1103/PhysRevLett.105.201802

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  • Measurement of CP violating asymmetries in B-0 -&gt; (K+K-KS0) decays with a time-dependent Dalitz approach 査読

    Y. Nakahama, K. Sumisawa, H. Aihara, K. Arinstein, T. Aushev, T. Aziz, A. M. Bakich, V. Balagura, K. Belous, V. Bhardwaj, M. Bischofberger, A. Bondar, G. Bonvicini, A. Bozek, M. Bracko, T. E. Browder, P. Chang, Y. Chao, A. Chen, P. Chen, B. G. Cheon, C. -C. Chiang, I. -S. Cho, Y. Choi, J. Dalseno, A. Das, Z. Dolezal, Z. Drasal, A. Drutskoy, S. Eidelman, P. Goldenzweig, B. Golob, J. Haba, K. Hara, K. Hayasaka, M. Hazumi, T. Higuchi, Y. Horii, Y. Hoshi, W. -S. Hou, Y. B. Hsiung, H. J. Hyun, T. Iijima, K. Inami, R. Itoh, M. Iwabuchi, M. Iwasaki, Y. Iwasaki, T. Julius, J. H. Kang, P. Kapusta, N. Katayama, H. Kawai, T. Kawasaki, H. Kichimi, H. J. Kim, J. H. Kim, M. J. Kim, B. R. Ko, P. Kodys, S. Korpar, P. Krizan, P. Krokovny, T. Kuhr, T. Kumita, S. -H. Kyeong, M. J. Lee, S. -H. Lee, Y. Liu, R. Louvot, A. Matyja, S. McOnie, K. Miyabayashi, H. Miyata, Y. Miyazaki, G. B. Mohanty, E. Nakano, M. Nakao, H. Nakazawa, S. Neubauer, S. Nishida, K. Nishimura, O. Nitoh, T. Nozaki, S. Ogawa, T. Ohshima, S. L. Olsen, W. Ostrowicz, H. Ozaki, C. W. Park, H. Park, H. K. Park, R. Pestotnik, M. Petric, L. E. Piilonen, M. Prim, H. Sahoo, Y. Sakai, O. Schneider, C. Schwanda, A. J. Schwartz, K. Senyo, M. E. Sevior, M. Shapkin, C. P. Shen, J. -G. Shiu, B. Shwartz, P. Smerkol, E. Solovieva, S. Stanic, M. Staric, T. Sumiyoshi, Y. Teramoto, K. Trabelsi, S. Uehara, T. Uglov, Y. Unno, S. Uno, Y. Ushiroda, G. Varner, K. E. Varvell, K. Vervink, C. H. Wang, P. Wang, X. L. Wang, Y. Watanabe, R. Wedd, E. Won, Y. Yamashita, Y. Yusa, D. Zander, Z. P. Zhang, V. Zhilich, P. Zhou, T. Zivko, A. Zupanc

    PHYSICAL REVIEW D   82 ( 7 )   073011-1 - 073011-12   2010年10月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We report a measurement of CP violating asymmetries in B-0 ((B-0) over bar) -&gt; (K+K-KS0) decays with a time-dependent Dalitz approach. This analysis is based on a data sample of 657 x 10(6) B (B) over bar pairs accumulated at the Y(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+) e(-) collider. As the result of an unbinned maximum likelihood fit to the selected candidates, the mixing-induced and direct CP violation parameters phi(eff)(1) and A(CP) are obtained for B-0 -&gt; phi(1020)K-S(0), B-0 -&gt; f(0)(980)K-S(0), and other B-0 -&gt; (K+K-KS0) decays. We find four solutions that describe the data. There are phi(eff)(1) (B-0 -&gt; phi(1020)K-S(0)) = (32.2 +/- 9.0 +/- 2.6 +/- 1.4); phi(eff)(1)(B-0 -&gt; phi(1020)K-S(0)) = 26.2 +/- 8.8 +/- 2.7 +/- 1.2); phi(eff)(1)(B-0 phi(1020)K-S(0)) = (27.3 +/- 8.6 +/- 2.8 +/- 1.3); and phi(eff)(1)(B-0 -&gt; phi(1020)K-S(0)) = (24.3 +/- 8.0 +/- 2.9 +/- 5.2). The values for the CP violating phase in B-0 -&gt; phi(1020)K-S(0) are similar, but other properties of the Dalitz plot are quite different for the four solutions. These four solutions have consistent phi(eff)(1) values for all three B-meson decay channels and none of them deviates significantly from the values measured in B -&gt; (c (c) over bar )K-0 decays with the currently available statistics. In addition, we find no significant direct CP violation.

    DOI: 10.1103/PhysRevD.82.073011

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  • Evidence for B- -&gt; tau(-)(nu)over-bar(tau) with a semileptonic tagging method 査読

    K. Hara, T. Iijima, H. Aihara, V. Aulchenko, T. Aushev, T. Aziz, A. M. Bakich, E. Barberio, K. Belous, M. Bischofberger, A. Bondar, A. Bozek, M. Bracko, T. E. Browder, P. Chang, Y. Chao, A. Chen, B. G. Cheon, C-C. Chiang, I-S. Cho, Y. Choi, J. Dalseno, M. Danilov, Z. Dolezal, W. Dungel, S. Eidelman, N. Gabyshev, P. Goldenzweig, B. Golob, H. Ha, Y. Hasegawa, K. Hayasaka, H. Hayashii, Y. Horii, Y. Hoshi, Y. B. Hsiung, H. J. Hyun, K. Inami, M. Iwabuchi, Y. Iwasaki, T. Julius, J. H. Kang, H. Kawai, T. Kawasaki, H. Kichimi, C. Kiesling, H. J. Kim, H. O. Kim, J. H. Kim, M. J. Kim, Y. J. Kim, K. Kinoshita, B. R. Ko, P. Kodys, S. Korpar, M. Kreps, P. Krizan, P. Krokovny, T. Kuhr, T. Kumita, A. Kuzmin, Y-J. Kwon, S-H. Kyeong, M. J. Lee, S-H. Lee, J. Li, A. Limosani, Y. Liu, D. Liventsev, R. Louvot, A. Matyja, S. McOnie, K. Miyabayashi, H. Miyata, Y. Miyazaki, G. B. Mohanty, T. Mori, E. Nakano, M. Nakao, H. Nakazawa, S. Neubauer, S. Nishida, K. Nishimura, O. Nitoh, T. Nozaki, S. Ogawa, T. Ohshima, S. Okuno, S. L. Olsen, H. Ozaki, G. Pakhlova, C. W. Park, H. K. Park, R. Pestotnik, M. Petric, L. E. Piilonen, M. Prim, M. Rozanska, S. Ryu, H. Sahoo, Y. Sakai, O. Schneider, J. Schuemann, C. Schwanda, A. J. Schwartz, K. Senyo, M. E. Sevior, M. Shapkin, H. Shibuya, J-G. Shiu, B. Shwartz, J. B. Singh, P. Smerkol, E. Solovieva, S. Stanic, M. Staric, K. Sumisawa, T. Sumiyoshi, Y. Teramoto, I. Tikhomirov, K. Trabelsi, S. Uehara, T. Uglov, Y. Unno, S. Uno, Y. Ushiroda, G. Varner, K. E. Varvell, K. Vervink, C. H. Wang, M-Z. Wang, P. Wang, Y. Watanabe, R. Wedd, E. Won, B. D. Yabsley, Y. Yamashita, M. Yamauchi, C. Z. Yuan, C. C. Zhang, V. Zhilich, T. Zivko, A. Zupanc, O. Zyukova

    PHYSICAL REVIEW D   82 ( 7 )   071101-1 - 071101-7   2010年10月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AMER PHYSICAL SOC  

    We present a measurement of the decay B- -&gt; tau(-)(nu) over bar (tau) using a data sample containing 657 x 10(6) B (B) over bar pairs collected at the gamma(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. A sample of B+B- pairs are tagged by reconstructing one B+ meson decaying semileptonically. We detect the B- -&gt; tau(-)(nu) over bar (tau) candidate in the recoil. We obtain a signal with a significance of 3.6 standard deviations including systematic uncertainties, and measure the branching fraction to be B- -&gt; tau(-)(nu) over bar (tau) [1.54(-0.37)(+0.38) (stat) (+0.29)(-0.31) (syst) x 10(-4). This result confirms the evidence for B- -&gt; tau(-)(nu) over bar (tau) obtained in a previous Belle measurement that used a hadronic B tagging method.

    DOI: 10.1103/PhysRevD.82.071101

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