Speaker
Osamu Seto
(Hokkai-Gakuen University)
Description
Under the assumption of hierarchical right-handed neutrino masses, masses of right-handed neutrinos must be larger than $10^8$ GeV in the standard thermal leptogenesis scenario. On the other hand, we show the mass can be reduced to around 5 TeV in a neutrinophilic two Higgs doublet model. We also show the required mass degeneracy for resonant leptogenesis scenario becomes rather mild in neutrinophilic two Higgs doublet model.
Primary author
Osamu Seto
(Hokkai-Gakuen University)
Co-authors
Prof.
Naoyuki Haba
(Shimane University)
Mr
Yuya Yamaguchi
(Hokkaido University)
