Zobrazeno 1 - 10
of 80
pro vyhledávání: '"Okawa, Shohei"'
Minimal Flavor Violation (MFV) offers an appealing framework for exploring physics beyond the Standard Model. Interestingly, within the MFV framework, a new colorless field that transforms non-trivially under a global ${\rm SU}(3)^3$ quark flavor gro
Externí odkaz:
http://arxiv.org/abs/2408.16812
Autor:
Hamada, Yu, Kitano, Ryuichiro, Matsudo, Ryutaro, Okawa, Shohei, Takai, Ryoto, Takaura, Hiromasa, Treuer, Lukas
We study Higgs boson production at $\mu^+ \mu^+$ colliders at high energy. Since both initial-state particles are positively charged, there is no $W$ boson fusion at the leading order, as it requires a $W^+ W^-$ pair. However, we find that the cross
Externí odkaz:
http://arxiv.org/abs/2408.01068
It is known that the model based on U(1)$_{L_\mu-L_\tau}$ gauge symmetry can explain not only the discrepancy between the measured value of muon $g-2$ and the theoretical prediction, but also the structure of the neutrino mass and mixings. We revisit
Externí odkaz:
http://arxiv.org/abs/2401.17613
We study phenomenology of a light scalar dark matter (DM). In the model, there are an inert doublet scalar and a singlet Dirac fermion $\psi$, both charged under a global $Z_2$ symmetry. The mass of the lightest inert scalar $H$ can be lighter than 1
Externí odkaz:
http://arxiv.org/abs/2310.13685
Publikováno v:
J. High Energ. Phys. 2023, 93 (2023)
Upcoming neutrino telescopes promise a new window onto the interactions of neutrinos with matter at ultrahigh energies ($E_\nu = 10^7$-$10^{10}$ GeV), and the possibility to detect deviations from the Standard Model predictions. In this paper, we upd
Externí odkaz:
http://arxiv.org/abs/2307.11152
Autor:
Di Luzio, Luca, Giannotti, Maurizio, Mescia, Federico, Nardi, Enrico, Okawa, Shohei, Piazza, Gioacchino
Publikováno v:
Phys.Rev.D 108 (2023) 11, 115004
We study the impact of renormalization group effects on QCD axion phenomenology. Focusing on the DFSZ model, we argue that the relevance of running effects for the axion couplings crucially depends on the scale where the heavier Higgs scalars are int
Externí odkaz:
http://arxiv.org/abs/2305.11958
We examine the sensitivity of the Large Hadron Collider (LHC) to light lepton portal dark matter with its mass below 10$\,$GeV. The model features an extra doublet scalar field and singlet Dirac dark matter, which have Yukawa interactions with left-h
Externí odkaz:
http://arxiv.org/abs/2208.05487
Publikováno v:
Phys. Rev. D 106, 055016 (2022)
It has been recently pointed out that in certain axion models it is possible to suppress simultaneously both the axion couplings to nucleons and electrons, realising the so-called astrophobic axion scenarios, wherein the tight bounds from SN1987A and
Externí odkaz:
http://arxiv.org/abs/2205.15326
We study a renormalizable scalar singlet dark matter model based on $Z_4$ lepton flavor symmetry. A $\mu\tau$-philic scalar doublet is introduced to explain the discrepancy between the experimental value and the theoretical prediction of the muon ano
Externí odkaz:
http://arxiv.org/abs/2205.08998
We study a lepton portal dark matter model, motivated by the deviation of the $W$ boson mass reported by the CDF collaboration. We introduce vector-like leptons and a scalar dark matter (DM) which exclusively couples to the extra leptons and muon. Th
Externí odkaz:
http://arxiv.org/abs/2204.07022