Updated on 2024/12/30

写真a

 
NAKANO Hiroaki
 
Organization
Academic Assembly Institute of Science and Technology Fundamental Sciences Associate Professor
Graduate School of Science and Technology Fundamental Sciences Associate Professor
Faculty of Science Department of Science Associate Professor
Title
Associate Professor
External link

Degree

  • 博士(理学) ( 1992.3   京都大学 )

Research Areas

  • Natural Science / Theoretical studies related to particle-, nuclear-, cosmic ray and astro-physics  / 素粒子論

Research History

  • Niigata University   Faculty of Science Department of Science   Associate Professor

    2017.4

  • Niigata University   Graduate School of Science and Technology Fundamental Sciences   Associate Professor

    2010.4

  • Niigata University   Graduate School of Science and Technology Fundamental Sciences   Associate Professor

    2010.4

  • Niigata University   Faculty of Science Department of Physics   Associate Professor

    2004.4 - 2017.3

  • Niigata University   Faculty of Science   Research Assistant

    1994.3 - 2004.3

Education

  • Kyoto University   理学研究科   物理学第二専攻

    - 1992

      More details

    Country: Japan

    researchmap

Professional Memberships

Committee Memberships

  • 日本物理学会   素粒子論領域運営委員  

    2018.4 - 2019.3   

      More details

    Committee type:Academic society

    researchmap

  • 京大基礎物理学研究所   共同利用運営委員会議長団  

    2017.1 - 2019.3   

      More details

    Committee type:Other

    researchmap

  • 京大基礎物理学研究所   共同利用運営委員会委員  

    2015.1 - 2019.3   

      More details

    Committee type:Other

    researchmap

  • 素粒子論グループ   素粒子論委員会委員  

    1998.11 - 2000.10   

      More details

    Committee type:Other

    researchmap

  • 京都大学基礎物理学研究所   研究部員  

    1995.4 - 1997.3   

      More details

    Committee type:Other

    researchmap

 

Papers

  • Next-to-minimal R-symmetric model: Dirac gaugino, Higgs mass and invisible width Reviewed

    Hiroaki Nakano, Masaki Yoshikawa

    PROGRESS OF THEORETICAL AND EXPERIMENTAL PHYSICS   2016 ( 3 )   1 - 28   2016.3

     More details

    Language:English   Publishing type:Research paper (scientific journal)   Publisher:OXFORD UNIV PRESS INC  

    We study a singlet extension of the minimalU(1)(R) symmetric model, which shares the nice properties of Dirac gauginos and the R-symmetric Higgs sector. At the same time, a superpotential coupling of an R-charged singlet to the Higgs doublets can make a substantial contribution to the Higgs boson mass. We show that the 125 GeV Higgs boson is consistent with perturbative unification, even if the SUSY scale is as low as 1 TeV and if the D-term Higgs potential is suppressed, as is often the case in Dirac gauginos. The model also contains a light scalar and fermion, a pseudo-modulus and pseudo-goldstino: The former gets its mass mainly from SUSY-breaking soft terms, in addition to a small explicit R-symmetry breaking for the latter. We examine how the Higgs mass and width are affected by these light degrees of freedom. Specifically, we find that, depending on the parameters of R-charged Higgses, a pseudo-moduli lighter than half of the Standard Model Higgs boson mass is still allowed by the constraints from invisible decays of the Z and Higgs bosons. We also find that such a light scalar can reduce the Higgs boson mass, at most by a few percents.

    DOI: 10.1093/ptep/ptw007

    Web of Science

    researchmap

  • Neutrino mass and proton decay in a U(1)(R)-symmetric model Reviewed

    Yusuke Morita, Hiroaki Nakano, Takashi Shimomura

    PROGRESS OF THEORETICAL AND EXPERIMENTAL PHYSICS   2013 ( 5 )   1 - 21   2013.5

     More details

    Language:English   Publishing type:Research paper (scientific journal)   Publisher:OXFORD UNIV PRESS INC  

    We study a U(1)(R)-symmetric extension of the supersymmetric standard model with supersymmetry breaking in the visible as well as hidden sectors. Specifically, we study U(1)(R)-breaking effects parameterized by the gravitino mass. A special R-charge assignment of right-handed neutrinos allows us to have neutrino Yukawa couplings with the R-charged Higgs field, which develops a tiny vacuum expectation value after the inclusion of U(1)(R)-symmetry breaking. Even with O(1) Yukawa couplings, a suitable size of Dirac neutrino mass can be generated if the gravitino mass is very small, m(3/2) = 1-10 eV. Our flipped R-charge assignment also allows a new type of dimension-five operator that can induce proton decay. It turns out that the proton stability mildly constrains the allowed range of the gravitino mass: A gravitino heavier than 10 keV can evade the proton decay constraint as well as cosmological ones. In this case, the largest neutrino Yukawa coupling is comparable to the electron Yukawa. We also calculate the mass of the pseudo goldstino and its mixing with neutralinos, and briefly discuss its implications in cosmology and Higgs phenomenology.

    DOI: 10.1093/ptep/ptt016

    Web of Science

    researchmap

  • Soft supersymmetry breaking at heavy chiral threshold Reviewed

    Hiroyuki Matsuura, Hiroaki Nakano, Koichi Yoshioka

    PROGRESS OF THEORETICAL PHYSICS   117 ( 2 )   395 - 400   2007.2

     More details

    Language:English   Publishing type:Research paper (scientific journal)   Publisher:PROGRESS THEORETICAL PHYSICS PUBLICATION OFFICE  

    We investigate the structure of threshold corrections to soft supersymmetry-breaking parameters at the mass threshold of heavy chiral superfields in the superfield coupling formalism. Nontrivial dependence on the soft parameters of the heavy chiral matter fields originates from the 'physical' definition of the heavy threshold scale. We find that the tree-level matching of the gauge couplings gives the correct matching relation for gaugino masses up to the two-loop level, while the one-loop matching of matter wavefunctions is needed to reproduce the previously known results for the A-parameters.

    DOI: 10.1143/PTP.117.395

    Web of Science

    researchmap

  • Induced top-Yukawa coupling and suppressed Higgs mass parameters Reviewed

    Tatsuo Kobayashi, Hiroaki Nakano, Haruhiko Terao

    Physical Review D - Particles, Fields, Gravitation and Cosmology   71 ( 11 )   2005.6

     More details

    Language:English   Publishing type:Research paper (scientific journal)   Publisher:American Physical Society  

    In the scenarios with heavy top squarks, mass parameters of the Higgs field must be fine-tuned due to a large logarithmic correction to the soft scalar mass. We consider a new possibility that the top-Yukawa coupling is small above TeV scale. The large top mass is induced from strong Yukawa interaction of the Higgs with another gauge sector, in which supersymmetry breaking parameters are given to be small. Then it is found that the logarithmic correction to the Higgs soft scalar mass is suppressed in spite of the strong coupling, and the fine-tuning is ameliorated. We propose an explicit model coupled to a superconformal gauge theory which realizes the above situation. © 2005 The American Physical Society.

    DOI: 10.1103/PhysRevD.71.115009

    Scopus

    researchmap

  • Large mass scale by strong gauge dynamics with infrared fixed point Reviewed

    Tatsuo Kobayashi, Hiroaki Nakano, Haruhiko Terao, Yoshihisa Yamada

    Progress of Theoretical Physics   113 ( 2 )   413 - 427   2005.2

     More details

    Language:English   Publishing type:Research paper (scientific journal)  

    We consider a mechanism for realizing the desired decoupling of the strongly-coupled sector which is supposed to generate hierarchical structure of the Yukawa couplings. In our mechanism, the same strongly-coupled sector is responsible for generating a sufficiently flat potential and a large vacuum expectation value (VEV) of a gauge-singlet scalar field by suppressing its soft scalar mass and self-coupling. A vacuum instability is caused by a supersymmetry-breaking A-term of order 10 TeV. We explicitly demonstrate the infrared convergence of soft scalar masses due to strongly-coupled dynamics and show that the soft mass of the singlet is at most of the same order as the soft masses of squarks and sleptons, which are much more strongly suppressed than the A-term. The physical mass scale of the decoupling is calculated in a self-consistent way. We also reinterpret the result in terms of an RG-improved effective potential.

    DOI: 10.1143/PTP.113.413

    Scopus

    researchmap

  • Non-perturbative Kahler potential, dilaton stabilization and Fayet-Iliopoulo term Reviewed

    T Higaki, Y Kawamura, T Kobayashi, H Nakano

    PHYSICS LETTERS B   582 ( 3-4 )   257 - 262   2004.3

     More details

    Language:English   Publishing type:Research paper (scientific journal)   Publisher:ELSEVIER SCIENCE BV  

    We study the dilaton stabilization in models with anomalous U(l) symmetry by adding specific string-motivated, non-perturbative corrections to the tree-level dilaton Kahler potential. We find that the non-perturbative effects can stabilize the dilaton at a desirably large value. We also observe that the size of Fayet-Iliopoulos term is reduced at the stabilized point. (C) 2004 Published by Elsevier B.V.

    DOI: 10.1016/j.physleb.2003.12.044

    Web of Science

    researchmap

  • Anomalous U(1) D-term contribution in type I string models Reviewed

    Tetsutaro Higaki, Yoshiharu Kawamura, Tatsuo Kobayashi, Hiroaki Nakano

    Physical Review D   69 ( 8 )   2004

     More details

    Language:English   Publishing type:Research paper (scientific journal)  

    We study the D-term contribution for anomalous U(1) symmetries in type I string models and derive a general formula for the D-term contribution, assuming that the dominant source of supersymmetry breaking is given by the F terms of the dilaton, (overall) moduli, or twisted moduli fields. On the basis of the formula, we also point out that there are several features different from the case of heterotic string models. The differences originate from the different forms of the Kahler potential between twisted moduli fields in type I string models and the dilaton field in heterotic string models. © 2004 The American Physical Society.

    DOI: 10.1103/PhysRevD.69.086004

    Scopus

    researchmap

  • Flavor violation in supersymmetric theories with gauged flavor symmetries Reviewed

    T Kobayashi, H Nakano, H Terao, K Yoshioka

    PROGRESS OF THEORETICAL PHYSICS   110 ( 2 )   247 - 267   2003.8

     More details

    Language:English   Publishing type:Research paper (scientific journal)   Publisher:PROGRESS THEORETICAL PHYSICS PUBLICATION OFFICE  

    In this paper, we study flavor violation in supersymmetric models with gauged flavor symmetries. There are several sources of flavor violation in these theories. The dominant flavor violation is the tree-level D-term contribution to scalar masses generated by flavor symmetry breaking. We present a new approach for suppressing these phenomenologically dangerous effects by separating the flavor-breaking sector from the supersymmetry-breaking sector. This separation can be achieved either in geometrical setups or in a dynamical way. We also point out that radiative corrections from the gauginos of gauged flavor symmetries can yield sizable generation-dependent masses of scalars. Generically the gaugino mass effects are not suppressed, even if the dominant D-term contribution is suppressed. We also analyze the constraints on the flavor symmetry sector resulting from these flavor-violating corrections.

    DOI: 10.1088/1126-6708/2003/02/022

    Web of Science

    researchmap

  • Sfermion mass degeneracy, superconformal dynamics, and supersymmetric grand unified theories Reviewed

    T Kobayashi, H Nakano, T Noguchi, H Terao

    PHYSICAL REVIEW D   66 ( 9 )   095011.1 - 9   2002.11

     More details

    Language:English   Publishing type:Research paper (scientific journal)   Publisher:AMER PHYSICAL SOC  

    We discuss issues in a scenario where hierarchical Yukawa couplings are generated through the strong dynamics of superconformal field theories (SCFTs). Independently of the mediation mechanism of supersymmetry breaking, the infrared convergence property of SCFTs can provide an interesting solution to the supersymmetric flavor problem; sfermion masses are suppressed around the decoupling scale of SCFTs and eventually become degenerate to some degree, thanks to family-independent radiative corrections governed by the gaugino masses of the minimal supersymmetric standard model (MSSM). We discuss under what conditions the degeneracy of the sfermion mass can be estimated in a simple manner. We also discuss the constraints from lepton flavor violations. We then explicitly study sfermion mass degeneracy within the framework of grand unified theories coupled to SCFTs. It is found that the degeneracy for right-handed sleptons becomes worse in the conventional SU(5) model than in the MSSM. On the other hand, in the flipped SU(5)xU(1) model, each right-handed lepton is still an SU(5) singlet, whereas the B-ino mass M-1 is determined by two independent gaugino masses of SU(5)xU(1). These two properties enable us to have an improved degeneracy for the right-handed sleptons. We also speculate on how further improvement can be obtained in the SCFT approach.

    DOI: 10.1103/PhysRevD.66.095011

    Web of Science

    researchmap

  • Yukawa hierarchy transfer from superconformal sector and degenerate Sfermion masses Reviewed

    Tatsuo KOBAYASHI, Hiroaki NAKANO, Haruhiko TERAO

    Physical Review D   65.015006 ( 1 )   1 - 6   2001.12

     More details

    Language:English   Publishing type:Research paper (scientific journal)   Publisher:American Physical Society  

    DOI: 10.1143/PTPS.123.387

    CiNii Article

    researchmap

  • Bulk standard model in the Randall-Sundrum background Reviewed

    Sanghyeon Chang, Junji Hisano, Hiroaki Nakano, Nobuchika Okada, Masahiro Yamaguchi

    Physical Review D - Particles, Fields, Gravitation and Cosmology   62 ( 8 )   8 - 8   2000

     More details

    Language:English   Publishing type:Research paper (scientific journal)  

    We discuss issues in an attempt to put the standard model (SM) in five-dimensional anti–de Sitter spacetime compactified on (Formula presented) The recently proposed approach to the gauge hierarchy problem by using this background geometry, with the SM confined on a boundary, is extended to a situation where (some of) the SM particles reside in the five-dimensional bulk. In particular, we find a localization of zero modes of bulk fermions near the boundary with a negative tension. Unlike the compactification with the flat metric, these fermion zero modes couple to Kaluza-Klein (KK) excitations of the SM gauge bosons. Interestingly, only low-lying modes of such KK gauge bosons have non-negligible couplings. Current electroweak precision data give a constraint that the first KK mode be heavier than (Formula presented) TeV. We also argue that at least the Higgs field should be confined on the brane to utilize the Randall-Sundrum background as a solution to the gauge hierarchy. © 2000 The American Physical Society.

    DOI: 10.1103/PhysRevD.62.084025

    Scopus

    researchmap

  • Effective theory description of anomalous U(1) supersymmetry breaking and its embedding into supergravity Reviewed

    Atsushi Kageyama, Hiroaki Nakano, Takaaki Ozeki, Yoshiaki Watanabe

    Progress of Theoretical Physics   101 ( 2 )   439 - 457   1999

     More details

    Language:English   Publishing type:Research paper (scientific journal)   Publisher:Yukawa Institute for Theoretical Physics  

    We discuss the embedding of anomalous U(1) supersymmetry breaking into supergravity, working in the effective theory after integrating out a strongly interacting non-Abelian gauge sector. By explicitly performing the fine-tuning of the cosmological constant, we calculate the gravitino mass and the supergravity correction to the expectation value of the auxiliary field D, the latter of which was previously argued to give rise to a dominant source of soft scalar masses. Unlike the conventional scheme of the hidden-sector gaugino condensation, we generically find a rather large gravitino mass m3/2 of order Λ̂3 / ξMpl, expressed in terms of the scale Λ̂ of the gaugino condensation and the scale ξ of the Fayet-Iliopoulos term. The explicit solution is given for the constant added to the superpotential in order to cancel the vacuum energy. In particular, we identify the parameter region in which no solution is found, as well as the parameter region in which the vacuum energy vanishes without adding the constant term. We also show how the allowed parameter region is reduced by requiring the positivity of the D-term soft mass-squared. Finally, we briefly discuss the constraint on the dilaton Kähler potential when the dynamical effect of the dilaton is included.

    DOI: 10.1143/PTP.101.439

    Scopus

    researchmap

  • ''Anomalous'' U(1) symmetry in orbifold string models Reviewed

    T Kobayashi, H Nakano

    NUCLEAR PHYSICS B   496 ( 1-2 )   103 - 131   1997.7

     More details

    Language:English   Publishing type:Research paper (scientific journal)   Publisher:ELSEVIER SCIENCE BV  

    ''Anomalous'' U(1) gauge symmetry with a Green-Schwarz anomaly cancellation mechanism is discussed in the orbifold construction of four-dimensional heterotic string models. Some conditions are given as criteria to have ''anomalous'' U(1) in orbifold string models. In particular, ''anomalous'' U(1) is absent if the massless twisted matter has no mixing between visible and hidden sectors or if a certain type of discrete symmetries are found. We then give a general procedure for classifying orbifold models with ''anomalous'' U(1) and for identifying the ''anomalous'' U(1) basis. We illustrate our procedure in Z(3) and Z(4) orbifold models. According to our procedure, the classification of ''anomalous'' U(1) can be reduced to classification in the absence of a Wilson line. We also discuss discrete symmetries left unbroken after the ''anomalous'' U(1) breaking. This includes a possible relation between ''anomalous'' U(1) and discrete R symmetries. (C) 1997 Elsevier Science B.V.

    DOI: 10.1016/S0550-3213(97)00210-1

    Web of Science

    researchmap

  • NONTRIVIALITY OF GAUGE-HIGGS-YUKAWA SYSTEM AND RENORMALIZABILITY OF GAUGED NJL MODEL Reviewed

    M HARADA, Y KIKUKAWA, T KUGO, H NAKANO

    PROGRESS OF THEORETICAL PHYSICS   92 ( 6 )   1161 - 1184   1994.12

     More details

    Language:English   Publishing type:Research paper (scientific journal)   Publisher:PROGRESS THEORETICAL PHYSICS PUBLICATION OFFICE  

    In the leading order of a modified 1/N-c expansion, we show that a class of gauge-Higgs-Yukawa systems in four dimensions give non-trivial and well-defined theories in the continuum limit. The renormalized Yukawa coupling gamma and the quartic scalar coupling lambda have to lie on a certain line in the (gamma, lambda) plane and the line terminates at an upper bound. The gauged Nambu-Jona-Lasinio (NJL) model in the limit of its ultraviolet cutoff going to infinity, is shown to become equivalent to the gauge-Higgs-Yukawa system with the coupling constants just on that terminating point. This proves the renormalizability of the gauged NJL moder in four dimensions. The effective potential for the gauged NJL model is calculated by using renormalization group technique and confirmed to be consistent with the previous result by Kondo, Tanabashi and Yamawaki obtained by the ladder Schwinger-Dyson equation.

    DOI: 10.1143/ptp/92.6.1161

    Web of Science

    researchmap

  • IMPROVING THE EFFECTIVE POTENTIAL, MULTIMASS PROBLEM, AND MODIFIED MASS-DEPENDENT SCHEME Reviewed

    H NAKANO, Y YOSHIDA

    PHYSICAL REVIEW D   49 ( 10 )   5393 - 5407   1994.5

     More details

    Language:English   Publishing type:Research paper (scientific journal)   Publisher:AMERICAN PHYSICAL SOC  

    We Present a new Procedure for improving the effective potential by using the renormalization group equation (RGE) in the presence of several mass scales. We propose a modification of the mass-dependent (MD) renormalization scheme (MDBAR) scheme) so that the scalar mass parameter runs at most logarithmically on the one hand and the decoupling of heavy particles is naturally incorporated in the RGE's on the other. Thanks to these properties, the procedure in the MDBAR scheme turns out to be very simple compared with the regionwise procedure in the modified minimal subtraction scheme proposed previously. The relation with other schemes is also discussed both analytically and numerically.

    DOI: 10.1103/PhysRevD.49.5393

    Web of Science

    researchmap

  • A HANDY CALCULATING METHOD OF HIGGS POTENTIAL IN SUSY MODEL Reviewed

    M BANDO, N MAEKAWA, H NAKANO, J SATO

    MODERN PHYSICS LETTERS A   8 ( 29 )   2729 - 2736   1993.9

     More details

    Language:English   Publishing type:Research paper (scientific journal)   Publisher:WORLD SCIENTIFIC PUBL CO PTE LTD  

    We examine a simple approximation to the one-loop Higgs potential in the supersymmetric standard model. We study the conditions under which our approximation can well simulate the full one-loop results. The results by our method are compared with those by the full one-loop potential as well as the tree one in several examples. It turns out that our method works quite well in many cases and thus provides a useful calculating method, instead of a complicated evaluation of one-loop potential.

    DOI: 10.1142/S0217732393003111

    Web of Science

    researchmap

  • IMPROVING THE EFFECTIVE POTENTIAL - MULTI-MASS-SCALE CASE Reviewed

    M BANDO, T KUGO, N MAEKAWA, H NAKANO

    PROGRESS OF THEORETICAL PHYSICS   90 ( 2 )   405 - 417   1993.8

     More details

    Language:English   Publishing type:Research paper (scientific journal)   Publisher:KYOTO UNIV  

    Previously proposed procedure for improving the effective potential by using renormalization group equation (RGE) is generalized so as to be applicable to any system containing several different mass scales. If one knows L-loop effective potential and (L + 1)-loop RGE coefficient functions, this procedure gives an improved potential which satisfies the RGE and contains all of the leading, next-to-leading, ..., and L-th-to-leading log terms. Our procedure here also clarifies how naturally the so-called effective field theory can be incorporated in the RGE in MSBAR scheme.

    DOI: 10.1143/PTP.90.405

    Web of Science

    researchmap

  • IMPROVING THE EFFECTIVE POTENTIAL Reviewed

    M BANDO, T KUGO, N MAEKAWA, H NAKANO

    PHYSICS LETTERS B   301 ( 1 )   83 - 89   1993.2

     More details

    Language:English   Publishing type:Research paper (scientific journal)   Publisher:ELSEVIER SCIENCE BV  

    A general procedure is presented how to improve the effective potential by using the renormalization group equation (RGE) in the MSBAR scheme. If one knows the L-loop effective potential and the RGE coefficient functions up to the (L+1)-loop level, this procedure gives an improved potential which satisfies the RGE and contains all of the leading, nest-to-leading, ..., and Lth-to-leading log terms.

    DOI: 10.1016/0370-2693(93)90725-W

    Web of Science

    researchmap

  • WHY IS TOP HEAVIER THAN BOTTOM - YUKAWA AND MASS UNIFICATION IN SUSY MODEL Reviewed

    M BANDO, T KUGO, N MAEKAWA, H NAKANO

    MODERN PHYSICS LETTERS A   7 ( 36 )   3379 - 3390   1992.11

     More details

    Language:English   Publishing type:Research paper (scientific journal)   Publisher:WORLD SCIENTIFIC PUBL CO PTE LTD  

    We examine whether the unification constraints on the Yukawa couplings and on the Higgs masses in the minimal supersymmetric Standard Model can be consistent with the observed mass pattern of the third generation fermions. The effects of the QCD interaction and the SU(2)R breaking owing to the U(1)Y gauge interaction and the absence of nu(tau)R are crucial. We observe that the parameter choice of "no-scale" supergravity is favored and the SUSY breaking scale has a lower bound, in order for the top quark to be much heavier than the bottom quark.

    DOI: 10.1142/S0217732392002779

    Web of Science

    researchmap

  • CRITICAL INSTABILITY IN TERMS OF THE RENORMALIZATION-GROUP EQUATION Reviewed

    M BANDO, T KUGO, N MAEKAWA, H NAKANO

    PHYSICAL REVIEW D   44 ( 10 )   R2957 - R2961   1991.11

     More details

    Language:English   Publishing type:Research paper (scientific journal)   Publisher:AMER PHYSICAL SOC  

    Critical instability has recently been proposed as a possible mechanism for generating a large mass difference between the top and bottom quarks. We discuss how critical instability, which is related to the quadratic divergence of the scalar mass, is described in the renormalization-group equations. It is pointed out that one can properly treat it in the mass-dependent renormalization scheme as well as in Wilson's scheme with a momentum cutoff, but not in a mass-independent scheme.

    DOI: 10.1103/PhysRevD.44.R2957

    Web of Science

    researchmap

▶ display all

Books

  • 四次元を超える時空と素粒子:隠された次元

    共立出版  2001 

     More details

MISC

  • Yukawa Hierarchy Transfer Based on Superconformal Dynamics and Geometrical Realization in String Models

    Tatsuo Kobayashi, Hiroaki Nakano, Tatsuya Noguchi, Haruhiko Terao

    JHEP 0302:022,2003   2002.5

     More details

    Publishing type:Internal/External technical report, pre-print, etc.  

    We propose a scenario that leads to hierarchical Yukawa couplings and<br />
    degenerate sfermion masses at the same time, in the context of<br />
    extra-dimensional models, which can be naturally embedded in a wide class of<br />
    string models. The hierarchy of Yukawa couplings and degeneracy of sfermion<br />
    masses can be realized thanks to superconformal gauge dynamics. The sfermion<br />
    mass degeneracy is guaranteed by taking the superconformal fixed point to be<br />
    family independent. In our scenario, the origin of Yukawa hierarchy is<br />
    attributed to geometry of compactified dimensions and the consequent volume<br />
    dependence of gauge couplings in the superconformal sectors. The difference in<br />
    these gauge couplings is dynamically transferred to the hierarchy of the Yukawa<br />
    couplings. Thus, our scenario combines a new dynamical approach and the<br />
    conventional geometrical approach to the supersymmetric flavor problem.

    DOI: 10.1088/1126-6708/2003/02/022

    arXiv

    researchmap

Presentations

  • Low-energy supersymmetry with Dirac gaugino and extended Higgs sector

    NAKANO Hiroaki

    2015.3 

     More details

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

    File: nakano20150323a_jps.pdf

    researchmap

Research Projects

  • 超対称大統一模型におけるディラック型ゲージーノ質量項の起源と暗黒物質の研究

    2018.4 - 2019.3

    System name:試験研究費助成

    Awarding organization:内田エネルギー科学振興財団

    中野 博章

      More details

    Authorship:Principal investigator  Grant type:Competitive

    researchmap

  • 連続的R対称性をもつ超対称模型によるヒッグス粒子と暗黒物質の研究

    2014.4 - 2017.3

    System name:科学研究費補助金基盤研究C

    中野 博章

      More details

    Authorship:Principal investigator  Grant type:Competitive

    researchmap

  • 離散世代対称性をもつ超共形ダイナミクスに基づく素粒子模型

    2010.4 - 2013.3

    System name:科学研究費補助金基盤研究C

    中野 博章

      More details

    Authorship:Principal investigator  Grant type:Competitive

    researchmap

  • 超場形式によるくりこみ群と超対称性の破れに対する閾値補正に関する研究

    2004.4 - 2008.3

    System name:科学研究費補助金基盤研究C

    中野 博章

      More details

    Authorship:Principal investigator  Grant type:Competitive

    researchmap

 

Teaching Experience

  • 先端科学技術総論

    2024
    Institution name:新潟大学

  • 理学基礎演習

    2022
    Institution name:新潟大学

  • 課題研究C

    2022
    Institution name:新潟大学

  • 課題研究A

    2022
    Institution name:新潟大学

  • 課題研究B

    2022
    Institution name:新潟大学

  • Advances in Physics and Chemistry

    2022
    Institution name:新潟大学

  • 課題研究D

    2022
    Institution name:新潟大学

  • 素粒子物理学

    2021
    Institution name:新潟大学

  • 物理学特論II

    2021
    Institution name:新潟大学

  • 現代物理学セミナーB

    2020
    Institution name:新潟大学

  • 現代物理学セミナーA

    2020
    Institution name:新潟大学

  • 理学スタディ・スキルズ

    2018
    -
    2020
    Institution name:新潟大学

  • 特殊相対論B

    2017
    Institution name:新潟大学

  • 物理学基礎BⅡ

    2017
    Institution name:新潟大学

  • 特殊相対論A

    2017
    Institution name:新潟大学

  • 基礎物理数学

    2017
    Institution name:新潟大学

  • 専門力アクティブ・ラーニング

    2017
    -
    2021
    Institution name:新潟大学

  • 素粒子物理学I

    2017
    Institution name:新潟大学

  • 平和を考えるB

    2016
    Institution name:新潟大学

  • 物理学への招待B

    2015
    -
    2016
    Institution name:新潟大学

  • 理論素粒子物理学II

    2014
    Institution name:新潟大学

  • 特殊相対論

    2014
    -
    2016
    Institution name:新潟大学

  • 研究者の仕事と生活

    2013
    Institution name:新潟大学

  • 課題探索特講

    2013
    -
    2016
    Institution name:新潟大学

  • 数理物質科学特定研究ⅡB(物理学)

    2013
    -
    2015
    Institution name:新潟大学

  • 数理物質科学特定研究ⅡA(物理学)

    2013
    -
    2015
    Institution name:新潟大学

  • 数理物質科学特定研究Ⅰ(物理学)

    2013
    -
    2015
    Institution name:新潟大学

  • 数理物質科学演習Ⅰ(物理学)

    2013
    -
    2015
    Institution name:新潟大学

  • 平和を考える in 新潟

    2013
    -
    2015
    Institution name:新潟大学

  • 数理物質科学演習Ⅱ(物理学)

    2013
    -
    2015
    Institution name:新潟大学

  • 物理学への招待A

    2013
    Institution name:新潟大学

  • 素粒子論特論

    2012
    Institution name:新潟大学

  • 物理学入門

    2010
    -
    2012
    Institution name:新潟大学

  • 物理学最前線入門

    2010
    Institution name:新潟大学

  • ゲージ場理論特論Ⅱ

    2008
    Institution name:新潟大学

  • 素粒子物理学II

    2008
    -
    2016
    Institution name:新潟大学

  • 基礎ベクトル解析

    2007
    -
    2016
    Institution name:新潟大学

  • 基礎物理学演習I

    2007
    -
    2016
    Institution name:新潟大学

  • 超対称理論

    2007
    -
    2013
    Institution name:新潟大学

  • 物理学基礎A II

    2007
    -
    2010
    Institution name:新潟大学

  • ゲージ場理論特論II

    2007
    Institution name:新潟大学

  • 物理数学演習I

    2007
    Institution name:新潟大学

  • 量子力学演習II

    2007
    Institution name:新潟大学

▶ display all