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Revisiting Metastable Cosmic String Breaking
Akifumi Chitose, Masahiro Ibe, Yuhei Nakayama +2
Metastable cosmic strings appear in models of new physics with a two-step symmetry breaking , where and . They decay via the monopole-antimono…
Precise Estimate of Charged Higgsino/Wino Decay Rate
Masahiro Ibe, Yuhei Nakayama, Satoshi Shirai
Higgsinos and Winos in the supersymmetric Standard Model are prime candidates for dark matter due to their weakly interacting nature. The mass differences between their charged com…
Interactions of electrical and magnetic charges and dark topological defects
Akifumi Chitose, Masahiro Ibe
We consider a model of dark photon which appears as a result of the successive symmetry breaking SU(2)U(1), where various types of topological defects…
Muon and non-thermal leptogenesis in model
Shintaro Eijima, Masahiro Ibe, Kai Murai
The gauged symmetry is the simplest possibility to explain the observed muon , while being consistent with the neutrino oscillations through the seesaw mechan…