掲載種別：研究論文（学術雑誌）  

We explore various aspects concerning the role of vector bosons during the
reheating process. Generally, reheating occurs during the period of
oscillations of the inflaton condensate and the evolution of the radiation bath
depends on the inflaton equation of state. For oscillations about a quadratic
minimum, the equation of state parameter, $w = p/\rho =0$, and the evolution of
the temperature, $T(a)$ with respect to the scale factor is independent of the
spin of the inflaton decay products. However, for cases when $w>0$, there is a
dependence on the spin, and here we consider the evolution when the inflaton
decays or scatters to vector bosons. We also investigate the gravitational
production of vector bosons as potential dark matter candidates. Gravitational
production predominantly occurs through the longitudinal mode. We compare these
results to the gravitational production of scalars.

DOI： 10.1088/1475-7516/2024/06/014

arXiv

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その他リンク： http://arxiv.org/pdf/2311.14794v1

掲載種別：研究論文（学術雑誌）  

Gravitational waves have become an irreplaceable tool for exploring the
post-inflationary universe. Their cosmological and astrophysical origins have
been attracting numerous attention. In this Letter, we point out a novel source
of ultra-high frequency gravitational waves: the decay of particles produced
during the reheating era. We highlight the decay of the Higgs boson as a
representative case, showing how it yields a testable gravitational wave
spectrum by future observations.

DOI： 10.1016/j.physletb.2024.138807

arXiv

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その他リンク： http://arxiv.org/pdf/2310.12023v1

掲載種別：研究論文（学術雑誌）  

We compute the density of a spin-$\frac32$ particle, the raritron, produced
at the end of inflation due to gravitational interactions. We consider a
background inflaton condensate as the source of this production, mediated by
the exchange of a graviton. This production greatly exceeds the gravitational
production from the emergent thermal bath during reheating. The relic abundance
limit sets an absolute minimum mass for a stable raritron, though there are
also model dependent constraints imposed by unitarity. We also examine the case
of gravitational production of a gravitino, taking into account the goldstino
evolution during reheating. We compare these results with conventional
gravitino production mechanisms.

DOI： 10.1103/PhysRevD.108.115027

arXiv

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その他リンク： http://arxiv.org/pdf/2309.15146v1

The recently proposed formalism of extended Jordan-Brans-Dicke gravity makes
it possible to calculate energy loss rate due to both gravitational wave and
scalar field (giving the origin of dark energy) wave emission at merger of a
black hole and a neutron star; a binary system of no scalar hair and a star
with the scalar charge. The scalar field emission changes orbit parameters of
the binary system, thereby changes detectable gravitational wave emission. When
neutron stars carry significantly large scalar charge, significant dark wave
(namely, scalar field wave) emission occurs at the same time of gravitational
wave emission. It is found that solutions of coupled differential equations
predict non-vanishing remnant dark charge after the gravitational collapse.
This gives two interesting possibilities: (1) the no-hair conjecture of black
hole is violated, or (2) a bosonic cloud is formed outside the event horizon of
black hole. The bosonic cloud proposed in the literature is a gigantic atom
made of gravitationally bound dark energy quanta surrounding a black hole. One
can either constrain, or even determine, parameters of extended
Jordan-Brans-Dicke gravity from accumulated gravitational wave observations of
merging black hole and neutron star.

arXiv

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その他リンク： http://arxiv.org/pdf/2306.07592v1

A coherent field over the entire universe is an attractive picture in
studying the dark sector of the universe. The misalignment mechanism, which
relies on inflation to achieve homogeneousness of the field, is a popular
mechanism for producing such a coherent dark matter. Nevertheless, unlike a
scalar field case, a vector boson field suffers because its energy density is
exponentially suppressed by the scale factor during the cosmic expansion. We
show that if the vector field gets a mass from a scalar field, whose value
increases by orders of magnitude, the suppression can be compensated, and the
misalignment can produce the coherent vector boson that has a sizable amount of
energy density in the present universe. Quintessence can be such a scalar
field.

arXiv

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その他リンク： http://arxiv.org/pdf/2306.01291v1

Since electroweak symmetry is generally broken during inflation, the Standard
Model Higgs field can become supermassive even after the end of inflation. In
this paper, we study the non-thermal phase space distribution of the Higgs
field during reheating, focusing in particular on two different contributions:
primordial condensate and stochastic fluctuations. We obtain their analytic
formulae, which agree with the previous numerical result. As a possible
consequence of the non-thermal Higgs spectrum, we discuss perturbative Higgs
decay during reheating for the case it is kinematically allowed. We find that
the soft-relativistic and hard spectra are dominant in the decay rate of the
stochastic fluctuation and that the primordial condensate and stochastic
fluctuations decay almost at the same time.

arXiv

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その他リンク： http://arxiv.org/pdf/2304.12578v1

Cosmological analysis of extended Jordan-Brans-Dicke (eJBD) gravity is
presented in the Einstein metric frame in which gravitational interaction is
readily understandable. Our formulation is the first systematic investigation
of how to introduce lagrangian of standard particle physics in eJBD framework
consistently with the general principle of spontaneously broken gauge symmetry,
which makes it possible to confront eJBD-based cosmology with observational and
laboratory bounds on time variation of parameters, masses, and coupling
constants, caused by time evolution of eJBD fields. Decomposition of standard
particle physics lagrangian into independent gauge invariant pieces is proposed
to avoid serious conflict that may arise from standard lagrangian transformed
from the Jordan frame. Independent conformal factors are assigned to each of
five gauge invariant pieces. The formulation is most unambiguously made
possible by defining fields having canonical kinetic terms that allow us to use
the canonical quantization rule of field theory. This construction gives as one
of its consequences the canonical eJBD field $\chi$ that couples to the
universal fermion current, a linear combination of baryon and lepton number
currents, $\partial_{\mu} \chi (\frac{1}{3} j_B^{\mu} + j_L^{\mu})$, in
addition to the conventional trace of the energy-momentum tensor. Field
equation of eJBD field along with gravitational equation is analyzed by using a
simplified polynomial class of potential and conformal functions, giving time
evolution of radiation, matter and dark energy densities consistent with
observations when an appropriate set of model parameters are used. Finite
temperature corrections are further calculated to give temperature dependent
terms in eJBD field potential.

arXiv

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その他リンク： http://arxiv.org/pdf/2304.08656v1

掲載種別：研究論文（学術雑誌）  

We revisit the calculation of the electron, neutron, and proton electric
dipole moments (EDMs) in the constrained minimal supersymmetric standard model
(CMSSM). The relatively large mass of the Higgs boson, $m_H \simeq 125$ GeV
coupled with the (as yet) lack of discovery of any supersymmetric particle at
the LHC, has pushed the supersymmetry breaking scale to several TeV or higher.
Though one might expect this decoupling to have relaxed completely any bounds
on the two CP violating phases in the CMSSM ($\theta_\mu$ and $\theta_A$), the
impressive experimental improvements in the limits on the EDMs (particularly
the electron EDM) still allow us to set constraints of order $(0.01 - 0.1)\pi$
on $\theta_A$ and $(0.001 - 0.1)\pi$ on $\theta_\mu$. We also discuss the
impact of future improvements in the experimental limits on supersymmetric
models.

DOI： 10.1007/JHEP03(2023)250

arXiv

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その他リンク： http://arxiv.org/pdf/2303.02822v1

掲載種別：研究論文（学術雑誌）  

DOI： 10.1103/PhysRevD.106.075014

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We study the effects of an anomalous Z' boson on the anomalous magnetic
moment of the muon (g-2), and especially the impact of its axial coupling. We
mainly evaluate the negative contribution to (g-2) of such couplings at
one-loop and look at the anomalous couplings generated at two loops. We find
areas of the parameter space, where the anomalous contribution becomes
comparable and even dominant compared to the one-loop contribution. We show
that in such cases, the cutoff of the theory is sufficiently low, so that new
charged fermions can be found in the next round of collider experiments. We
comment on the realization of such a context in string theory orientifolds.

DOI： 10.1007/JHEP02(2023)051

arXiv

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その他リンク： http://arxiv.org/pdf/2209.12947v2

Despite its dominance in the present universe's energy budget, dark energy is
the least understood component in the universe. Although there is a popular
model for the dynamical dark energy, the quintessence scalar, the investigation
is limited because of its highly elusive character. We present a model where
the quintessence is gauged by an Abelian gauge symmetry. The quintessence is
promoted to be a complex scalar whose real part is the dark energy field while
the imaginary part is the longitudinal component of a new gauge boson. It
brings interesting characters to dark energy physics. We study the general
features of the model, including how the quintessence behavior is affected and
how the solicited dark energy properties constrain its gauge interaction. We
also note that while the uncoupled quintessence models are suffered greatly
from the Hubble tension, it can be alleviated if the quintessence is under the
gauge symmetry.

DOI： 10.1088/1475-7516/2023/02/005

arXiv

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その他リンク： http://arxiv.org/pdf/2208.09229v3

Gravitational particle production is a minimal contribution to reheating the
Universe after the end of inflation. To study this production channel, two
different approaches have commonly been considered, one of which is based on
the Boltzmann equation, and the other is based on the Bogoliubov
transformation. Each of these has pros and cons in practice. The collision term
in the Boltzmann equation can be computed based on quantum field theory in the
Minkowski spacetime, and thus many techniques have been developed so far. On
the other hand, the Bogoliubov approach may deal with the particle production
beyond the perturbation theory and is able to take into account the effect of
the curved spacetime, whereas in many cases one should rely on numerical
methods, such as lattice computation. We show by explicit numerical and
analytical computations of the purely gravitational production of a scalar that
these two approaches give consistent results for particle production with large
momenta during reheating, whereas the Boltzmann approach is not capable of
computing particle production out of vacuum during inflation. We also provide
analytic approximations of the spectrum of produced scalar with/without mass
for the low momentum regime obtained from the Bogoliubov approach.

DOI： 10.1088/1475-7516/2022/09/018

arXiv

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その他リンク： http://arxiv.org/pdf/2206.10929v2

We consider the production of dark matter during the process of reheating
after inflation. The relic density of dark matter from freeze-in depends on
both the energy density and energy distribution of the inflaton scattering or
decay products composing the radiation bath. We compare the perturbative and
non-perturbative calculations of the energy density in radiation. We also
consider the (likely) possibility that the final state scalar products are
unstable. Assuming either thermal or non-thermal energy distribution functions,
we compare the resulting relic density based on these different approaches. We
show that the present-day cold dark matter density can be obtained through
freeze-in from preheating for a large range of dark matter masses.

DOI： 10.1088/1475-7516/2022/03/016

arXiv

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その他リンク： http://arxiv.org/pdf/2109.13280v1

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

We propose a new portal coupling to dark matter by taking advantage of the
nonminimally coupled portal sector to the Ricci scalar. Such a portal sector
conformally induces couplings to the trace of the energy-momentum tensor of
matters including highly secluded dark matter particles. The portal coupling is
so feeble that dark matter is produced by freeze-in processes of scatterings
and/or the decay of the mediator. We consider two concrete realizations of the
portal: conformally induced Higgs portal and conformally induced mediator
portal. The former case is compatible with the Higgs inflation, while the
latter case can be tested by dark matter direct detection experiments.

DOI： 10.1103/PhysRevD.104.075018

arXiv

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その他リンク： http://arxiv.org/pdf/2106.01923v2

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

We show that a metastable dark matter candidate arises naturally from the
conformal transformation between the Einstein metric, where gravitons are
normalised states, and the Jordan metric dictating the coupling between gravity
and matter. Despite being secluded from the Standard Model by a large scale
above which the Jordan metric shows modifications to the Einstein frame metric,
dark matter couples to the energy momentum tensor of the Higgs field in the
primordial plasma primarily. This allows for the production of dark matter in a
sufficient amount which complies with observations. The seclusion of dark
matter makes it long-lived for masses $\lesssim 1$ MeV, with a lifetime much
above the age of the Universe and the present experimental limits. Such a dark
matter scenario has clear monochromatic signatures generated by the decay of
the dark matter candidate into neutrino and/or $\gamma-$rays.

DOI： 10.1103/PhysRevD.103.115016

arXiv

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その他リンク： http://arxiv.org/pdf/2103.02615v2

We analyze in detail the perturbative decay of the inflaton oscillating about
a generic form of its potential $V(\phi) = \phi^k$, taking into account the
effects of non-instantaneous reheating. We show that evolution of the
temperature as a function of the cosmological scale factor depends on the spin
statistics of the final state decay products when $k > 2$. We also include the
inflaton-induced mass of the final states leading to either kinematic
suppression or enhancement if the final states are fermionic or bosonic
respectively. We compute the maximum temperature reached after inflation, the
subsequent evolution of the temperature and the final reheat temperature. We
apply our results to the computation of the dark matter abundance through
thermal scattering during reheating. We also provide an example based on
supersymmetry for the coupling of the inflaton to matter.

DOI： 10.1088/1475-7516/2021/04/012

arXiv

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その他リンク： http://arxiv.org/pdf/2012.10756v2

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

We generalize dark matter production to a two-metric framework whereby the
physical metric, which couples to the Standard Model (SM), is conformally
and/or disformally related to the metric governing the gravitational dynamics.
We show that this setup is naturally present in many Ultra Violet (UV)
constructions, from K\"ahler moduli fields to tensor-portal models, and from
emergent gravity to supergravity models. In this setting we study dark matter
production in the early Universe resulting from both scatterings off the
thermal bath and the radiative decay of the inflaton. We also take into account
non-instantaneous reheating effects at the end of inflation. In this context,
dark matter emerges from the production of the scalar field mediating the
conformal/disformal interactions with the SM, i.e. realising a Feebly
Interacting Matter Particle (FIMP) scenario where the suppression scale of the
interaction between the scalar and the SM can be taken almost as high as the
Planck scale in the deep UV.

DOI： 10.1103/PhysRevD.103.015028

arXiv

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その他リンク： http://arxiv.org/pdf/2011.11647v1

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

We propose a new scenario where dark matter belongs to a secluded sector
coupled to the Standard Model through energy--momentum tensors. Our model is
motivated by constructions where gravity {\it emerges} from a hidden sector,
the graviton being identified by the kinetic term of the fields in the secluded
sector. Supposing that the lighter particle of the secluded sector is the dark
component of the Universe, we show that we can produce it in a sufficiently
large amount despite the suppressed couplings of the theory, thanks to large
temperatures of the thermal bath in the early stage of the Universe.

DOI： 10.1103/PhysRevD.102.055019

arXiv

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その他リンク： http://arxiv.org/pdf/2007.06534v2

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

Rare decays of $K$ and $B$ mesons provide a powerful probe of dark sectors
with light new particles. We show that the pair production of $O(100\,{\rm
MeV})$ dark states can be probed with the decays of $K_L$ mesons, owing to the
enhanced two-body kinematics, $K_L\to X_1X_2$ or $X_2X_2$. If either or these
two particles is unstable, e.g. $X_2\to X_1\pi^0$, $X_2\to X_1\gamma$ or
$X_{1,2}\to \gamma\gamma$, such decays could easily mimic $K_L\to \pi^0
\nu\overline{\nu}$ signatures, while not being ruled out by the decays of
charged kaons. We construct explicit models that have enhanced $K_L$ decay
signatures, and are constrained by the results of the KOTO experiment. We note
that recently reported excess events can also be accommodated while satisfying
all other constraints ($B$ decays, colliders, beam dumps). These models are
based on the extensions of the gauge and/or scalar sector of the theory. The
lightest of $X_{1,2}$ particles, if stable, could constitute the entirety of
dark matter.

DOI： 10.1103/PhysRevD.102.055016

arXiv

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その他リンク： http://arxiv.org/pdf/2005.07102v2

We perform a systematic analysis of dark matter production during
post-inflationary reheating. Following the period of exponential expansion, the
inflaton begins a period of damped oscillations as it decays. These
oscillations and the evolution of temperature of the thermalized decay products
depend on the shape of the inflaton potential $V(\Phi)$. We consider potentials
of the form $\Phi^k$. Standard matter-dominated oscillations occur for $k=2$.
In general, the production of dark matter may depend on either (or both) the
maximum temperature after inflation, or the reheating temperature, where the
latter is defined when the Universe becomes radiation dominated. We show that
dark matter production is sensitive to the inflaton potential and depends
heavily on the maximum temperature when $k>2$. We also consider the production
of dark matter with masses larger than the reheating temperature.

DOI： 10.1103/PhysRevD.101.123507

arXiv

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その他リンク： http://arxiv.org/pdf/2004.08404v2

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

No-scale supergravity provides a successful framework for Starobinsky-like
inflation models. Two classes of models can be distinguished depending on the
identification of the inflaton with the volume modulus, $T$ (C-models), or a
matter-like field, $\phi$ (WZ-models). When supersymmetry is broken, the
inflationary potential may be perturbed, placing restrictions on the form and
scale of the supersymmetry breaking sector. We consider both types of
inflationary models in the context of high-scale supersymmetry. We further
distinguish between models in which the gravitino mass is below and above the
inflationary scale. We examine the mass spectra of the inflationary sector. We
also consider in detail mechanisms for leptogenesis for each model when a
right-handed neutrino sector, used in the seesaw mechanism to generate neutrino
masses, is employed. In the case of C-models, reheating occurs via inflaton
decay to two Higgs bosons. However, there is a direct decay channel to the
lightest right-handed neutrino which leads to non-thermal leptogenesis. In the
case of WZ-models, in order to achieve reheating, we associate the matter-like
inflaton with one of the right-handed sneutrinos whose decay to the lightest
right handed neutrino simultaneously reheats the Universe and generates the
baryon asymmetry through leptogenesis.

DOI： 10.1103/PhysRevD.101.015002

arXiv

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その他リンク： http://arxiv.org/pdf/1911.02463v1

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.100.035004

Scopus

arXiv

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その他リンク： http://arxiv.org/pdf/1905.09243v1

掲載種別：研究論文（学術雑誌）  

DOI： 10.1103/PhysRevD.99.063508

Scopus

arXiv

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その他リンク： http://arxiv.org/pdf/1901.04449v1

掲載種別：研究論文（学術雑誌）  

DOI： 10.1016/j.physletb.2019.03.012

Scopus

arXiv

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その他リンク： http://arxiv.org/pdf/1812.11077v2

掲載種別：研究論文（学術雑誌）  

DOI： 10.1103/PhysRevD.98.055009

Scopus

arXiv

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その他リンク： http://arxiv.org/pdf/1807.06488v1

掲載種別：研究論文（学術雑誌）  

DOI： 10.1103/PhysRevD.98.015030

Scopus

arXiv

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その他リンク： http://arxiv.org/pdf/1805.07342v1

掲載種別：研究論文（学術雑誌）  

DOI： 10.1007/JHEP06(2018)117

Scopus

arXiv

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その他リンク： http://arxiv.org/pdf/1805.00651v2

掲載種別：研究論文（学術雑誌）  

DOI： 10.1103/PhysRevD.97.063004

Scopus

arXiv

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その他リンク： http://arxiv.org/pdf/1708.06455v2

掲載種別：研究論文（学術雑誌）  

DOI： 10.1103/PhysRevD.97.023523

Scopus

arXiv

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その他リンク： http://arxiv.org/pdf/1705.03696v2

掲載種別：研究論文（学術雑誌）  

DOI： 10.1103/PhysRevD.95.115032

Scopus

arXiv

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その他リンク： http://arxiv.org/pdf/1704.07542v2

掲載種別：研究論文（学術雑誌）  

DOI： 10.1103/PhysRevD.96.043518

Scopus

arXiv

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その他リンク： http://arxiv.org/pdf/1703.09020v3

掲載種別：研究論文（学術雑誌）  

DOI： 10.1103/PhysRevD.97.115021

Scopus

arXiv

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その他リンク： http://arxiv.org/pdf/1702.04526v2

掲載種別：研究論文（学術雑誌）  

DOI： 10.1103/PhysRevLett.118.101802

Scopus

arXiv

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その他リンク： http://arxiv.org/pdf/1611.01466v3

掲載種別：研究論文（学術雑誌）  

DOI： 10.1007/JHEP02(2017)031

Scopus

arXiv

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その他リンク： http://arxiv.org/pdf/1606.09317v3

掲載種別：研究論文（学術雑誌）  

DOI： 10.1007/JHEP08(2016)151

Scopus

arXiv

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その他リンク： http://arxiv.org/pdf/1606.00159v1

掲載種別：研究論文（学術雑誌）  

DOI： 10.1103/PhysRevD.94.015028

Scopus

arXiv

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その他リンク： http://arxiv.org/pdf/1603.05588v1

掲載種別：研究論文（学術雑誌）  

DOI： 10.1142/S0217751X16501591

Scopus

arXiv

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その他リンク： http://arxiv.org/pdf/1512.09129v4

Composite Higgs models are an attractive scenario, where the discovered Higgs
boson is regarded as a Nambu-Goldstone boson associated with spontaneous
breakdown of a global symmetry of more fundamental theory. This class of models
predicts violation of perturbative unitarity at high energies, and new
resonances are expected to appear around TeV scale to maintain the unitarity,
while a sizable phase shift is predicted in certain scattering amplitude. We
investigate the new resonance scale from the phase shift by drawing analogies
with pion physics in QCD. The detectability of the phase shift at LHC and the
ILC is also discussed. This talk was given in {\it HPNP 2015} at University of
Toyama and based on the work in collaboration with S.~Kanemura, T.~Shindou and
N.~Machida (arXiv:1410.8413 [hep-ph]).

arXiv

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その他リンク： http://arxiv.org/pdf/1504.07966v1

掲載種別：研究論文（学術雑誌）  

DOI： 10.1103/PhysRevD.92.035019

Scopus

arXiv

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その他リンク： http://arxiv.org/pdf/1504.04125v2

掲載種別：研究論文（学術雑誌）  

DOI： 10.1103/PhysRevD.91.075012

Scopus

arXiv

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その他リンク： http://arxiv.org/pdf/1411.6044v1

掲載種別：研究論文（学術雑誌）  

DOI： 10.1103/PhysRevD.91.115016

Scopus

arXiv

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その他リンク： http://arxiv.org/pdf/1410.8413v2

掲載種別：研究論文（学術雑誌）  

DOI： 10.1103/PhysRevD.91.016004

Scopus

arXiv

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その他リンク： http://arxiv.org/pdf/1408.5548v2

掲載種別：研究論文（学術雑誌）  

DOI： 10.1103/PhysRevD.90.053011

Scopus

arXiv

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その他リンク： http://arxiv.org/pdf/1407.2848v3

掲載種別：研究論文（学術雑誌）  

DOI： 10.1103/PhysRevD.90.036006

Scopus

arXiv

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その他リンク： http://arxiv.org/pdf/1406.0158v4

掲載種別：研究論文（学術雑誌）  

DOI： 10.1007/JHEP07(2014)093

Scopus

arXiv

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その他リンク： http://arxiv.org/pdf/1403.5880v1

掲載種別：研究論文（学術雑誌）  

DOI： 10.1103/PhysRevD.89.115021

Scopus

arXiv

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その他リンク： http://arxiv.org/pdf/1403.0715v2

掲載種別：研究論文（学術雑誌）  

DOI： 10.1016/j.nuclphysb.2014.05.022

Scopus

arXiv

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その他リンク： http://arxiv.org/pdf/1402.4126v2

掲載種別：研究論文（学術雑誌）  

DOI： 10.1007/JHEP04(2014)029

Scopus

arXiv

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その他リンク： http://arxiv.org/pdf/1312.2089v2

掲載種別：研究論文（学術雑誌）  

DOI： 10.1103/PhysRevD.89.015018

Scopus

arXiv

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その他リンク： http://arxiv.org/pdf/1311.0067v1

掲載種別：研究論文（学術雑誌）  

DOI： 10.1140/epjc/s10052-013-2696-z

Scopus

arXiv

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その他リンク： http://arxiv.org/pdf/1309.3254v2

掲載種別：研究論文（学術雑誌）  

DOI： 10.1016/j.physletb.2014.05.016

Scopus

arXiv

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その他リンク： http://arxiv.org/pdf/1309.1231v3

掲載種別：研究論文（学術雑誌）  

DOI： 10.1103/PhysRevD.87.095002

Scopus

arXiv

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その他リンク： http://arxiv.org/pdf/1211.5411v2

掲載種別：研究論文（学術雑誌）  

DOI： 10.1209/0295-5075/101/11001

Scopus

arXiv

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その他リンク： http://arxiv.org/pdf/1209.1522v3

掲載種別：研究論文（学術雑誌）  

DOI： 10.1016/j.physletb.2012.12.049

Scopus

arXiv

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その他リンク： http://arxiv.org/pdf/1207.5102v3

掲載種別：研究論文（学術雑誌）  

DOI： 10.1103/PhysRevD.86.015019

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arXiv

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その他リンク： http://arxiv.org/pdf/1204.4254v1

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）  

DOI： 10.1063/1.4742109

Web of Science

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掲載種別：研究論文（学術雑誌）  

DOI： 10.5506/APhysPolB.43.405

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We suggest natural TeV-scale seesaw with non-negligible left-right neutrino
mixings as preserving tiny neutrino masses. Our analysis is exhibited, without
loss of generality, by taking a basis of the neutrino matrices, in which the
condition to obtain the left-right mixings is clear. We also suggest a flavor
symmetry as an underlying theory, which naturally realizes our setup to
preserve tiny neutrino masses. Our setup can predict a magnitude of sin
theta_13 in a region of 0.10 to 0.20, depending on the deviation from maximal
atmospheric neutrino mixing and CP phase. We also investigate experimental
constraints and phenomenology in our setup.

arXiv

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その他リンク： http://arxiv.org/pdf/1110.2252v1

掲載種別：研究論文（学術雑誌）  

DOI： 10.5506/APhysPolB.44.733

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arXiv

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その他リンク： http://arxiv.org/pdf/1109.5442v2

掲載種別：研究論文（学術雑誌）  

DOI： 10.1103/PhysRevD.85.014007

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arXiv

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その他リンク： http://arxiv.org/pdf/1109.5082v2

掲載種別：研究論文（学術雑誌）  

DOI： 10.1142/S021773231003327X

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arXiv

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その他リンク： http://arxiv.org/pdf/0909.2920v2