Zobrazeno 1 - 10
of 680
pro vyhledávání: '"Kobayashi, Shin"'
Dark pion is a promising candidate for the strongly interacting massive particle dark matter. A large pion self-coupling $m_\pi/f_\pi$ tends to be required for correct relic abundance, and hence the partial-wave amplitudes can violate the perturbativ
Externí odkaz:
http://arxiv.org/abs/2210.01393
We discuss cosmological constraints on a dark scalar particle mixing with the Standard Model Higgs boson. We pay particular attention to the dark scalar production process when the reheating temperature of the Universe is very low, which allows us to
Externí odkaz:
http://arxiv.org/abs/2112.11096
Autor:
Sunakawa, Taiki1,2 (AUTHOR), Kobayashi, Shin1 (AUTHOR) shkobaya@east.ncc.go.jp, Kudo, Masashi1 (AUTHOR), Sugimoto, Motokazu1 (AUTHOR), Kobayashi, Tatsushi3 (AUTHOR), Gotohda, Naoto1,2 (AUTHOR)
Publikováno v:
Journal of Surgical Case Reports. Jul2024, Vol. 2024 Issue 7, p1-5. 5p.
The asymmetric dark matter (ADM) scenario solves the baryon-dark matter coincidence problem when the dark matter (DM) mass is of $\mathcal{O}(1)$GeV. Composite ADM models based on QCD-like strong dynamics are particularly motivated since the strong d
Externí odkaz:
http://arxiv.org/abs/2105.07642
Autor:
Yasuda, Yoji, Yamada, Yuri, Koshiji, Fukuro, Kobayashi, Shin-ichi, Uchida, Takayuki, Hoshi, Yoichi
Publikováno v:
In Thin Solid Films 15 April 2024 794
Autor:
Kagoura, Masaaki, Kobayashi, Shin, Kojima, Motohiro, Kudo, Masashi, Sugimoto, Motokazu, Konishi, Masaru, Gotohda, Naoto
Publikováno v:
In European Journal of Surgical Oncology March 2024 50(3)
We discuss gauge mediated supersymmetry breaking models which explain the observed muon anomalous magnetic moment and the Higgs boson mass simultaneously. The successful explanation requires the messenger sector which violates the relation motivated
Externí odkaz:
http://arxiv.org/abs/2104.03289
Recently, the chiral superconductivity of the cosmic string in the axion model has gathered attention. The superconductive nature can alter the standard understanding of the cosmology of the axion model. For example, a string loop with a sizable supe
Externí odkaz:
http://arxiv.org/abs/2102.05412
Publikováno v:
Phys. Rev. D 103, 023017 (2021)
Self-interacting dark matter (SIDM) has gathered growing attention as a solution to the small scale problems of the collisionless cold dark matter (DM). We investigate the SIDM using stellar kinematics of 23 ultra-faint dwarf (UFD) galaxies with the
Externí odkaz:
http://arxiv.org/abs/2008.02529
Recently, the XENON1T collaboration reported an excess in the electron recoil energy spectrum. One of the simplest new physics interpretation is a new neutrino-electron interaction mediated by a light vector particle. However, for the parameter regio
Externí odkaz:
http://arxiv.org/abs/2007.16105