292 citations · 915 across the 24 of their papers we have counts for
24 papers
Perturbative Unitarity of Strongly Interacting Massive Particle Models
Ayuki Kamada, Shin Kobayashi, Takumi Kuwahara
Dark pion is a promising candidate for the strongly interacting massive particle dark matter. A large pion self-coupling tends to be required for correct relic abundance,…
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…
Chiral Composite Asymmetric Dark Matter
Masahiro Ibe, Shin Kobayashi, Keiichi Watanabe
The asymmetric dark matter (ADM) scenario solves the baryon-dark matter coincidence problem when the dark matter (DM) mass is of GeV. Composite ADM models based on…
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…
Probing Dark Matter Self-interaction with Ultra-faint Dwarf Galaxies
Kohei Hayashi, Masahiro Ibe, Shin Kobayashi +2
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 usi…