33 citations · 115 across the 12 of their papers we have counts for
7 papers · 1 filter
Renormalization Group Running of the Minimal Leptophilic Dark Matter Model toward a UV Completion
Osamu Seto, Tetsuo Shindou, Takanao Tsuyuki
We study the renormalization group running of the coupling constants in a minimal leptophilic dark matter model in which a Standard Model singlet fermion, acting as the dark matter…
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…
Lower bounds on lepton flavor violating branching ratios in a radiative seesaw model
Osamu Seto, Tetsuo Shindou, Takanao Tsuyuki
We study the lepton flavor violating decays such as , , in the three-loop radiative seesaw model proposed by Krauss, Nasri, and Trodden. In this model,…
Perturbativity in the seesaw mechanism
Takehiko Asaka, Takanao Tsuyuki
We consider the Standard Model extended by right-handed neutrinos to explain massive neutrinos through the seesaw mechanism. The new fermion can be observed when it has a sufficien…
Seesaw mechanism at electron-electron colliders
Takehiko Asaka, Takanao Tsuyuki
We consider the Standard Model with right-handed neutrinos to explain the masses of active neutrinos by the seesaw mechanism. Since active neutrinos as well as heavy neutral lepton…
Bottom-tau unification by neutrinos in a nonsupersymmetric SU(5) model
Takanao Tsuyuki
We show that Yukawa couplings of bottom quarks and tau leptons can be unified in a non-supersymmetric SU(5) model. We introduce an arbitrary number of right-handed neutrinos. Their…
Neutrino masses, leptogenesis, and sterile neutrino dark matter
Takanao Tsuyuki
We analyze a scenario in which the lightest heavy neutrino is a dark matter candidate and the second- heaviest neutrino decays producing a lepton number. If were…