375 citations · 3.3k across the 147 of their papers we have counts for
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Precise Estimate of Charged Wino Decay Rate
Masahiro Ibe, Masataka Mishima, Yuhei Nakayama +1
The Wino is an triplet Majorana fermion and a well-motivated dark matter candidate. The mass difference between the charged and the neutral Winos is small than…
Cosmological Constraints on Dark Scalar
Masahiro Ibe, Shin Kobayashi, Yuhei Nakayama +1
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…
Muon in Gauge Mediation without SUSY CP Problem
Masahiro Ibe, Shin Kobayashi, Yuhei Nakayama +1
We discuss gauge mediated supersymmetry breaking models which explain the observed muon anomalous magnetic moment and the Higgs boson mass simultaneously. The successful explanatio…
On Stability of Fermionic Superconducting Current in Cosmic String
Masahiro Ibe, Shin Kobayashi, Yuhei Nakayama +1
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 cosmol…
Cosmological Constraint on Vector Mediator of Neutrino-Electron Interaction in light of XENON1T Excess
Masahiro Ibe, Shin Kobayashi, Yuhei Nakayama +1
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…
Cosmological Constraint on Dark Photon from
Masahiro Ibe, Shin Kobayashi, Yuhei Nakayama +1
A new U(1) gauge symmetry is the simplest extension of the Standard Model and has various theoretical and phenomenological motivations. In this paper, we study the cosmological con…