999 citations · 5.8k across the 59 of their papers we have counts for
59 papers
Neutrinoless double beta decays tell nature of right-handed neutrinos
Takehiko Asaka, Hiroyuki Ishida, Kazuki Tanaka
We consider the minimal seesaw model, the Standard Model extended by two right-handed neutrinos, for explaining the neutrino masses and mixing angles measured in oscillation experi…
Neutrino masses and gravitational wave background
Takehiko Asaka, Hisashi Okui
We consider the Standard Model with three right-handed neutrinos to generate tiny neutrino masses by the seesaw mechanism. Especially, we investigate the case when one right-handed…
Hiding neutrinoless double beta decay in the minimal seesaw mechanism
Takehiko Asaka, Hiroyuki Ishida, Kazuki Tanaka
We present a possibility that the neutrinoless double beta decay can be hidden in the minimal seesaw mechanism where the standard model is extended by two right-handed neutrinos wh…
What if a specific neutrinoless double beta decay is absent
Takehiko Asaka, Hiroyuki Ishida, Kazuki Tanaka
We consider the seesaw model with two right-handed neutrinos and which masses are hierarchical, and investigate their contribution to the neutrinoless double beta ($0 ν…
Lepton flavor model with modular symmetry in large volume limit
Takehiko Asaka, Yongtae Heo, Takahiro Yoshida
We consider the modular symmetry associated with the compactification of extra dimensions as the flavor symmetry on lepton sector. Especially, we propose a model based on the modul…
Direct baryogenesis in the broken phase
Takehiko Asaka, Hiroyuki Ishida, Wen Yin
We show a new mechanism for baryogenesis where the reheating temperature can be smaller than the electroweak scale. The baryon number symmetry is violated by a dimension nine opera…