Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- The University of TokyoJP4.5k papers
- Yukawa Institute for Theoretical PhysicsJP2.7k papers
- The University of OsakaJP2.3k papers
- Nagoya UniversityJP2.2k papers
- High Energy Accelerator Research OrganizationJP2.2k papers
- Centre National de la Recherche ScientifiqueFR2.1k papers
- Tokyo Institute of TechnologyJP2k papers
- University of TsukubaJP1.7k papers
- Brookhaven National LaboratoryUS1.6k papers
- Stony Brook UniversityUS1.5k papers
- Waseda UniversityJP1.5k papers
- Commissariat à l'Énergie Atomique et aux Énergies AlternativesFR1.5k papers
23 papers · 2 filters
Classical and quantum entropy of parton distributions
Yoshikazu Hagiwara, Yoshitaka Hatta, Bo-Wen Xiao +1
We introduce the semiclassical Wehrl entropy for the nucleon as a measure of complexity of the multiparton configuration in phase space. This gives a new perspective on the nucleon…
Model with a gauged lepton flavor SU(2) symmetry
Cheng-Wei Chiang, Koji Tsumura
We propose a model having a gauged symmetry associated with the second and third generations of leptons, dubbed , of which is an Abelian subgro…
CP-odd Higgs Boson Production in Collisions
Ken Sasaki, Tsuneo Uematsu
We investigate the CP-odd Higgs boson production via two-photon processes in collisions. The CP-odd Higgs boson, which we denote as , is expected to appear in the Two-Hig…
Structure of hadron resonances with a nearby zero of the amplitude
Yuki Kamiya, Tetsuo Hyodo
We discuss the relation between the analytic structure of the scattering amplitude and the origin of an eigenstate represented by a pole of the amplitude.If the eigenstate is not d…
Resumming double non-global logarithms in the evolution of a jet
Y. Hatta, E. Iancu, A. H. Mueller +1
We consider the Banfi-Marchesini-Smye (BMS) equation which resums non-global energy logarithms in the QCD evolution of the energy lost by a pair of jets via soft radiation at large…
Entropy production and isotropization in Yang-Mills theory with use of quantum distribution function
Hidekazu Tsukiji, Teiji Kunihiro, Akira Ohnishi +1
We investigate thermalization process in relativistic heavy ion collisions in terms of the Husimi-Wehrl (HW) entropy defined with the Husimi function, a quantum distribution functi…
Cosmological implications of Standard Model criticality and Higgs inflation
Yuta Hamada, Hikaru Kawai, Yukari Nakanishi +1
The observed Higgs mass indicates that the Standard Model can be valid up to near the Planck scale . Within this framework, it is important to examine how little modifi…
Ma-xion: Majoron as QCD axion in a radiative seesaw model
Ernest Ma, Takahiro Ohata, Koji Tsumura
The smallness of neutrino mass, the strong CP problem, and the existence of dark matter are explained in an economical way. The neutrino mass is generated by the colored version of…
Tachyonic instability of the scalar mode prior to QCD critical point based on Functional renormalization-group method
Takeru Yokota, Teiji Kunihiro, Kenji Morita
We establish and elucidate the physical meaning of the appearance of an acausal mode in the sigma mesonic channel, found in the previous work by the present authors, when the syste…
Inhomogeneous Chiral Phase in Quark Matter
Toshitaka Tatsumi
Recent development of inhomogeneous chiral phase in Kyoto group is briefly reviewed. First, the nesting effect of the Fermi surface is emphasized as a key mechanism leading to inho…
Exotic Doubly Charmed Ds0*(2317)D and Ds1*(2460)D* Molecules
Mario Sanchez Sanchez, Li-Sheng Geng, Jun-Xu Lu +2
The and heavy meson systems can exchange a kaon that is emitted in S-wave owing to the opposite intrinsic parity of the ($D_{s1}^*…
Accessing the gluon Wigner distribution in ultraperipheral collisions
Yoshikazu Hagiwara, Yoshitaka Hatta, Roman Pasechnik +2
We propose to constrain the gluon Wigner distribution in the nucleon by studying the exclusive diffractive dijet production process in ultraperipheral proton-nucleus collisions (UP…
Poly-instanton axion inflation
Tatsuo Kobayashi, Shohei Uemura, Junji Yamamoto
We investigate the axion inflation model derived by poly-instanton effects in type II superstring theories. Poly-instanton effects are instanton effects corrected by another instan…
High-energy Neutrinos from Multi-body Decaying Dark Matter
Nagisa Hiroshima, Ryuichiro Kitano, Kazunori Kohri +1
Since the report of the PeV-TeV neutrinos by the IceCube Collaboration, various particle physics models have been proposed to explain the neutrino spectrum by dark matter particles…
Thermalization of overpopulated systems in the 2PI formalism
Shoichiro Tsutsui, Jean-Paul Blaizot, Yoshitaka Hatta
Based on the two-particle irreducible (2PI) formalism to next-to-leading order in the expansion, we study the thermalization of overpopulated systems in scalar theorie…
A Radiative Neutrino Mass Model with SIMP Dark Matter
Shu-Yu Ho, Takashi Toma, Koji Tsumura
We propose the first viable radiative seesaw model, in which the neutrino masses are induced radiatively via the two-loop Feynman diagram involving Strongly Interacting Massive Par…
Spontaneous Spin Polarization due to Tensor Selfenergies in Quark Matter
Tomoyuki Maruyama, Toshitaka Tatsumi
We study the magnetic properties of quark matter in the NJL model with the tensor interaction. The spin-polarized phase given by the tensor interaction remains even when the quark…
Axion-Like Particles and Recent Observations of the Cosmic Infrared Background Radiation
Kazunori Kohri, Hideo Kodama
The CIBER collaboration released their first observational data of the Cosmic IR background (CIB) radiation, which has significant excesses at around the wavelength 1 m c…
Gravitational wave from dark sector with dark pion
Koji Tsumura, Masatoshi Yamada, Yuya Yamaguchi
In this work, we investigate the spectra of gravitational waves produced by chiral symmetry breaking in dark quantum chromodynamics (dQCD) sector. The dark pion () can be a dark…
Gluon Tomography from Deeply Virtual Compton Scattering at Small-x
Yoshitaka Hatta, Bo-Wen Xiao, Feng Yuan
We present a full evaluation of the deeply virtual Compton scattering (DVCS) cross section in the dipole framework in the small-x region. The result features the and $\cos…
Chiral pair fluctuations for the inhomogeneous chiral transition
Ryo Yoshiike, Tong-Gyu Lee, Toshitaka Tatsumi
The effects of fluctuations are discussed around the phase boundary of the inhomogeneous chiral transition between the inhomogeneous chiral phase and the chiral-restored phase. The…
Topological deconfinement transition in QCD at finite isospin density
Kouji Kashiwa, Akira Ohnishi
The confinement-deconfinement transition is discussed from topological viewpoints. The topological change of the system is achieved by introducing the dimensionless imaginary chemi…
Elliptic Flow in Small Systems due to Elliptic Gluon Distributions?
Yoshikazu Hagiwara, Yoshitaka Hatta, Bo-Wen Xiao +1
We investigate the contributions from the so-called elliptic gluon Wigner distributions to the rapidity and azimuthal correlations of particles produced in high energy collisi…