Baryogenesis via leptogenesis in multi-field inflation

Grigoris Panotopoulos, NELSON MANUEL VIDELA MENARES

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5 Scopus citations

Abstract

In multi-field reheating after modular j-inflation we investigate the conditions under which baryogenesis via non-thermal leptogenesis can be successfully realized. We introduce three heavy right-handed neutrinos to the non-supersymmetric Standard Model of particle physics, assuming hierarchical neutrino masses. Considering a typical mass for the first right-handed neutrino of the order of 10 11 GeV, suggested from the seesaw mechanism and also from concrete SO(10) grand unification models, we obtain the allowed parameter space for viable baryogenesis. An upper bound for the inflaton mass as well as a lower bound for its branching ratio to the pair of lightest right-handed neutrinos are found and reported.

Original languageEnglish
Article number774
JournalEuropean Physical Journal C
Volume78
Issue number9
DOIs
StatePublished - 1 Sep 2018

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