Zobrazeno 1 - 10
of 96
pro vyhledávání: '"Yazaki, Koichi"'
We investigate the survival probability of unstable states, the time-dependence of an initial state, in coupled channels. First, we extend the formulation of the survival probability from single channel to coupled channels (two channels). We derive a
Externí odkaz:
http://arxiv.org/abs/2305.11695
Autor:
Aoki, Sinya, Yazaki, Koichi
We investigate how the derivative expansion in the HAL QCD method works to extract physical observables, using a separable potential in quantum mechanics, which is solvable but highly non-local in the coordinate system. We consider three cases for in
Externí odkaz:
http://arxiv.org/abs/2109.07665
We demonstrate how S-matrix poles manifest themselves as the physical spectrum near the upper threshold in the context of the two-channel uniformized Mittag-Leffler expansion, an expression written as a sum of pole terms under an appropriate variable
Externí odkaz:
http://arxiv.org/abs/2108.11605
Publikováno v:
Prog Theor Exp Phys (2020)
A formalism is given to hermitize the HAL QCD potential, which needs to be non-hermitian except the leading order (LO) local term in the derivative expansion as the Nambu-Bethe-Salpeter (NBS) wave functions for different energies are not orthogonal t
Externí odkaz:
http://arxiv.org/abs/1909.00656
Autor:
ExHIC Collaboration, Cho, Sungtae, Hyodo, Tetsuo, Jido, Daisuke, Ko, Che Ming, Lee, Su Houng, Maeda, Saori, Miyahara, Kenta, Morita, Kenji, Nielsen, Marina, Ohnishi, Akira, Sekihara, Takayasu, Song, Taesoo, Yasui, Shigehiro, Yazaki, Koichi
Publikováno v:
Prog.Part.Nucl.Phys. 95 (2017) 279-322
Heavy ion collisions (HIC) at high energies are excellent ways for producing heavy hadrons and composite particles. With upgraded detectors at RHIC and LHC, it has become possible to measure hadrons beyond their ground states. Therefore, HIC provide
Externí odkaz:
http://arxiv.org/abs/1702.00486
Autor:
Jittoh, Toshifumi, Kohri, Kazunori, Koike, Masafumi, Sato, Joe, Sugai, Kenichi, Yamanaka, Masato, Yazaki, Koichi
We propose helium-4 spallation processes induced by long-lived stau in supersymmetric standard models, and investigate an impact of the processes on light elements abundances. We show that, as long as the phase space of helium-4 spallation processes
Externí odkaz:
http://arxiv.org/abs/1209.1951
Autor:
ExHIC Collaboration, Cho, Sungtae, Furumoto, Takenori, Hyodo, Tetsuo, Jido, Daisuke, Ko, Che Ming, Lee, Su Houng, Nielsen, Marina, Ohnishi, Akira, Sekihara, Takayasu, Yasui, Shigehiro, Yazaki, Koichi
Publikováno v:
Phys.Rev. C84 (2011) 064910
We investigate the possibilities of using measurements in present and future experiments on heavy ion collisions to answer some longstanding problems in hadronic physics, namely identifying hadronic molecular states and exotic hadrons with multiquark
Externí odkaz:
http://arxiv.org/abs/1107.1302
Autor:
Jittoh, Toshifumi, Kohri, Kazunori, Koike, Masafumi, Sato, Joe, Sugai, Kenichi, Yamanaka, Masato, Yazaki, Koichi
Publikováno v:
Phys.Rev.D84:035008,2011
We propose helium-4 spallation processes induced by long-lived stau in supersymmetric standard models, and investigate an impact of the processes on light elements abundances. We show that, as long as the phase space of helium-4 spallation processes
Externí odkaz:
http://arxiv.org/abs/1105.1431
Autor:
ExHIC Collaboration, Ohnishi, Akira, Cho, Sungtae, Furumoto, Takenori, Hyodo, Tetsuo, Jido, Daisuke, Ko, Che Ming, Lee, Su Houng, Nielsen, Marina, Sekihara, Takayasu, Yasui, Shigehiro, Yazaki, Koichi
Discriminating hadronic molecular and multi-quark states is a long standing problem in hadronic physics. We propose here to utilize relativistic heavy ion collisions to resolve this problem, as exotic hadron yields are expected to be strongly affecte
Externí odkaz:
http://arxiv.org/abs/1103.1700
Publikováno v:
Prog.Theor.Phys.125:1205-1224,2011
The scattering length and effective range of the piSigma channel are studied in order to characterize the strangeness S=-1 meson-baryon scattering and the Lambda(1405) resonance. We examine various off-shell dependence of the amplitude in dynamical c
Externí odkaz:
http://arxiv.org/abs/1101.5190