Volume 340 - The 39th International Conference on High Energy Physics (ICHEP2018) - Parallel: Astro-particle Physics and Cosmology
Direct leptogenesis
W. Yin
Full text: pdf
Published on: August 02, 2019
Abstract
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.
DOI: https://doi.org/10.22323/1.340.0305
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