Thermal Wash-in Leptogenesis via Heavy Higgs Decay
High Energy Physics - Phenomenology
2024-07-12 v2
Abstract
We present a conceptually simple model to generate asymmetries that are not directly related to baryon nor lepton charges. The model employs a three-Higgs doublet framework, wherein the other two Higgs fields are significantly heavier than the Standard Model (SM) Higgs field. The decay of these heavier Higgs fields generates asymmetry for approximately conserved charges in the Standard Model at a high temperature. These asymmetries will be converted into baryon/lepton asymmetry through violating interactions associated with right-handed neutrinos via the wash-in mechanism.
Keywords
Cite
@article{arxiv.2405.14332,
title = {Thermal Wash-in Leptogenesis via Heavy Higgs Decay},
author = {Kyohei Mukaida and Hidenaga Watanabe and Masaki Yamada},
journal= {arXiv preprint arXiv:2405.14332},
year = {2024}
}
Comments
21 pages, 4 figures. v2: appendix extended, typos fixed, but results unchanged