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Thermal Wash-in Leptogenesis via Heavy Higgs Decay

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arxiv 2405.14332 v2 pith:L2GWHB2U submitted 2024-05-23 hep-ph

Kyohei Mukaida , Hidenaga Watanabe , Masaki Yamada This is my paper · ORCID
classification hep-ph
keywords higgsmodelasymmetriesasymmetrybaryonchargesdecayfields
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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 $B-L$ violating interactions associated with right-handed neutrinos via the wash-in mechanism.

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Cited by 1 Pith paper

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  1. Eogenesis via the High-scale Electroweak Symmetry Restoration

    hep-ph 2024-12 conditional novelty 6.0 of 10

    A primordial right-handed electron asymmetry, kept out of equilibrium by high-scale electroweak symmetry non-restoration, can be converted by sphalerons into the observed baryon asymmetry without B-L violation.

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