20-27 July 2011
Alpes Congrès - Alpexpo
Europe/Paris timezone

Leptogenesis in neutrinophilic Higgs doublet models

22 Jul 2011, 16:50
15m
Berlioz (Alpes Congrès - Alpexpo)

Berlioz

Alpes Congrès - Alpexpo

Parallel session talk Cosmology and Gravity Cosmology and Gravity

Speaker

Dr Osamu Seto (Hokka-Gakuen University)

Description

We show that in a class of two Higgs doublet model, where one Higgs doublet generates masses of quarks and charged leptons whereas the other Higgs doublet with a tiny vacuum expectation value generates neutrino Dirac masses, large Yukawa couplings lead to a large enough CP asymmetry of the right-handed neutrino decay. Thermal leptogenesis suitably works at low energy scale as keeping no enhancement of lepton number violating wash out effects.

Primary author

Dr Osamu Seto (Hokka-Gakuen University)

Co-author

Prof. Naoyuki Haba (Osaka University)

Presentation Materials