8 citations · 17 across the 7 of their papers we have counts for
7 papers
Neutron Portal and Dark Matter-Baryon Coincidence: from UV Completion to Phenomenology
Sudhakantha Girmohanta, Yuichiro Nakai, Yoshihiro Shigekami +1
We present a dynamical solution to the dark matter-baryon coincidence problem based on the neutron portal operator connecting the visible and dark sector asymmetries. This framewor…
The Minimal Supersymmetric Standard Model with Non-Invertible Selection Rules
Yuichiro Nakai, Hajime Otsuka, Yoshihiro Shigekami +1
We investigate a framework of the Minimal Supersymmetric Standard Model (MSSM) in which the quark and lepton flavor structure and suppression of flavor-changing neutral currents (F…
Models for the Electric Dipole Moment and Anomalous Magnetic Moment of the Tau Lepton
Yuichiro Nakai, Yoshihiro Shigekami, Peng Sun +1
The Belle II experiment and other ongoing and projected lepton facilities are expected to greatly enhance the sensitivity to the electric dipole moment (EDM) and anomalous magnetic…
Postsphaleron darkogenesis
Sudhakantha Girmohanta, Yuichiro Nakai, Zhihao Zhang
A supercooled phase transition in a nearly conformal dark sector can provide a natural setting for darkogenesis via its out-of-equilibrium dynamics, where a particle-antiparticle n…
Wiggly dilaton: a landscape of spontaneously broken scale invariance
Sudhakantha Girmohanta, Yuichiro Nakai, Yu-Cheng Qiu +1
The dilaton emerges as a pseudo-Nambu-Goldstone boson (pNGB) associated with the spontaneous breaking of scale invariance in a nearly conformal field theory (CFT). We show the exis…
Cold Darkogenesis: Dark Matter and Baryon Asymmetry in Light of the PTA Signal
Kohei Fujikura, Sudhakantha Girmohanta, Yuichiro Nakai +1
We build upon the intriguing possibility that the recently reported nano-Hz gravitational wave signal by Pulsar Timing Array (PTA) experiments is sourced by a strong first-order ph…
A Large Muon EDM from Dark Matter
Kim Siang Khaw, Yuichiro Nakai, Ryosuke Sato +2
We explore a model of dark matter (DM) that can explain the reported discrepancy in the muon anomalous magnetic moment and predict a large electric dipole moment (EDM) of the muon.…