It is pointed out that lepton asymmetry can be generated through CP-preserving inflaton decay into Higgs boson when the Pontecorvo-Maki-Nakagawa-Sakata (PMNS) matrix has a proper CP phase. The leptons produced during thermalization process undergo flavor oscillations where CP violation takes place. The llHH terms relevant to the active neutrino masses give lepton number violations. Our scenario can be tested from the ground-based neutrino experiment.
|Proceedings of Science
|Published - 2019
|39th International Conference on High Energy Physics, ICHEP 2018 - Seoul, Korea, Republic of
Duration: 2018 Jul 4 → 2018 Jul 11