Zobrazeno 1 - 10
of 89
pro vyhledávání: '"Kwei-Chou Yang"'
Autor:
Kwei-Chou Yang
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 6, Pp 1-26 (2024)
Abstract In a usual dark matter (DM) model without a huge mass difference between the DM and lighter mediator, using the coupling strength suitable for having the correct relic density, the resulting self-interaction becomes several orders of magnitu
Externí odkaz:
https://doaj.org/article/4a8e233a5a8d4dc7b22147a4cfa2afa0
Autor:
Kwei-Chou Yang
Publikováno v:
Journal of High Energy Physics, Vol 2022, Iss 11, Pp 1-34 (2022)
Abstract Kinematically forbidden channels can set the freeze-out dark matter (DM) relic abundance. These channels are described by DM annihilations into heavier states, which vanish at zero temperature limit, but occur at finite temperatures in the e
Externí odkaz:
https://doaj.org/article/236f3f8a39c145f5856c799d4e788a41
Autor:
Kwei-Chou Yang
Publikováno v:
Journal of High Energy Physics, Vol 2020, Iss 7, Pp 1-36 (2020)
Abstract We show the presence of a potentially detectable gamma-ray line in the Fermi Galactic center excess in light of the secluded (vector) dark matter (DM) model in which the hidden scalar, nearly degenerate with DM in mass, mediates the interact
Externí odkaz:
https://doaj.org/article/fe30ef5ceebb41df923cb2dd57eafbdd
Thermodynamic evolution of secluded vector dark matter: conventional WIMPs and nonconventional WIMPs
Autor:
Kwei-Chou Yang
Publikováno v:
Journal of High Energy Physics, Vol 2019, Iss 11, Pp 1-47 (2019)
Abstract The secluded dark matter resides within a hidden sector and self-annihilates into lighter mediators which subsequently decay to the Standard Model (SM) particles. Depending on the coupling strength of the mediator to the SM, the hidden secto
Externí odkaz:
https://doaj.org/article/fe6a11b3924b42d89ba6b96aec6cdf52
Autor:
Kwei-Chou Yang
Publikováno v:
Journal of High Energy Physics, Vol 2018, Iss 8, Pp 1-44 (2018)
Abstract We have built a lepton-specific next-to-minimal two-Higgs-doublet-portal vector dark matter model. The vector dark matter in the hidden sector does not directly couple to the visible sector, but instead annihilates into the hidden Higgs boso
Externí odkaz:
https://doaj.org/article/b1337b2a9136439e8a377544d653ae91
Publikováno v:
Nuclear Physics B, Vol 931, Iss C, Pp 132-145 (2018)
We present a study for two-quark light-cone distribution amplitudes for the 13D2 light tensor meson states with quantum number JPC=2−−. Because of the G-parity, the chiral-even two-quark light-cone distribution amplitudes of this tensor meson are
Externí odkaz:
https://doaj.org/article/b15440c963eb4381981ec403e92c59ec
Autor:
Kwei-Chou Yang, 楊桂周
82
In the method of QCD sum rules, roles played by quark condensates and by the gluon condensate are taken into account in the determination of the properties of hadrons. In this thesis, we use the method of QCD sum rules to calculate hadron pro
In the method of QCD sum rules, roles played by quark condensates and by the gluon condensate are taken into account in the determination of the properties of hadrons. In this thesis, we use the method of QCD sum rules to calculate hadron pro
Externí odkaz:
http://ndltd.ncl.edu.tw/handle/65992116309331985857
Autor:
Kwei-Chou Yang
Publikováno v:
The Astrophysical Journal. 914:110
The public GALPROP code gives a fully numerical solution for the spectrum of cosmic rays propagating through a linear Galactic wind directed outwards from the Galactic plane in the framework of a cylindrical diffusion model. Alternatively, for the li
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d2820fff9b1619bc6ece426c22f58f30
https://doi.org/10.3847/1538-4357/abfcc0
https://doi.org/10.3847/1538-4357/abfcc0
Autor:
Kwei-Chou Yang
Publikováno v:
Physical Review
In light of the observed Galactic center gamma-ray excess, we investigate a simplified model, for which the scalar dark matter interacts with quarks through a pseudoscalar mediator. The viable regions of the parameter space, that can also account for
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d0b8cc5ebda18237123afdf38c161ccb
http://arxiv.org/abs/1711.03878
http://arxiv.org/abs/1711.03878
Publikováno v:
Nuclear Physics B, Vol 931, Iss C, Pp 132-145 (2018)
Nuclear Physics
Nuclear Physics
We present a study for two-quark light-cone distribution amplitudes for the $1^3D_2$ light tensor meson states with quantum number $J^{PC}=2^{--}$. Because of the G-parity, the chiral-even two-quark light-cone distribution amplitudes of this tensor m
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fe35b81d001fe07939ac4a44a243e71b
http://arxiv.org/abs/1706.05073
http://arxiv.org/abs/1706.05073