Spontaneous Leptogenesis in Higgs Inflation

Kin-ya Oda; Seong Chan Park; Sung Mook Lee

Spontaneous Leptogenesis in Higgs Inflation

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arxiv 2010.07563 v3 pith:OBQ45JY5 submitted 2020-10-15 hep-ph gr-qchep-th

Sung Mook Lee , Kin-ya Oda , Seong Chan Park This is my paper · ORCID

classification hep-phgr-qchep-th

keywords higgsinflationleptonnumberasymmetryfieldleptogenesisreheating

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We propose a scenario of spontaneous leptogenesis in Higgs inflation with help from two additional operators: the Weinberg operator (Dim 5) and the derivative coupling of the Higgs field and the current of lepton number (Dim 6). The former is responsible for lepton number violation and the latter induces chemical potential for lepton number. The period of rapidly changing Higgs field, naturally realized in Higgs inflation during the reheating, allows large enhancement in the produced asymmetry in lepton number, which is eventually converted into baryon asymmetry of the universe. This scenario is compatible with high reheating temperature of Higgs inflation model.

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