782 citations · 4.2k across the 100 of their papers we have counts for
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Stochastic gravitational wave spectrum from cosmic string emitting gauge bosons and Majorana fermions
Nobuchika Okada, Osamu Seto
The effect of particle radiation on the spectrum of the stochastic gravitational wave background (SGWB) from cosmic strings is studied. We consider cosmic strings in an Abelian-Hig…
Intergenerational gauged model and its implication to muon anomaly and thermal dark matter
Nobuchika Okada, Osamu Seto
We study the flavor dependent models, where an th generation of quarks and th generation of leptons are charged. By solving the anomaly free conditio…
Probing for chiral gauge boson through scattering measurement experiments
Kento Asai, Arindam Das, Jinmian Li +2
Motivated by the observation of tiny neutrino mass can not be explained within the framework of Standard Model (SM), we consider extra gauge extended scenarios in which tiny neutri…
Light cold dark matter from non-thermal decay
Ki-Young Choi, Jinn-Ouk Gong, Junghoon Joh +2
We investigate the mass range and the corresponding free-streaming length scale of dark matter produced non-thermally from decay of heavy objects which can be either dominant or su…
Low-scale leptogenesis and dark matter in a three-loop radiative seesaw model
Osamu Seto, Tetsuo Shindou, Takanao Tsuyuki
We show that three open questions in particle physics and cosmology: the origin of neutrino mass, the identity of dark matter, and the origin of the baryon asymmetry of the univers…
Revisiting sterile neutrino dark matter in gauged model
Shintaro Eijima, Osamu Seto, Takashi Shimomura
We reexamine sterile neutrino dark matter in gauged model. Improvements have been made by tracing and careful evaluation of the evolution of the number densities of st…