Stability, reheating and leptogenesis
High Energy Physics - Phenomenology
2019-08-02 v2
Abstract
In a minimal model of leptogenesis, the observed baryon asymmetry is realized after high-scale reheating into the lightest sterile neutrino. We consider constraints on this scenario from the stability of the Higgs vacuum during pre-heating. Depending on the reheat temperature, the lightest sterile neutrino may be in or out of thermal equilibrium at production. Demanding stability of the Higgs vacuum during pre-heating, we find strong constraints which primarily impact the parameter space of thermal leptogenesis.
Keywords
Cite
@article{arxiv.1903.08658,
title = {Stability, reheating and leptogenesis},
author = {Djuna Croon and Nicolas Fernandez and David McKeen and Graham White},
journal= {arXiv preprint arXiv:1903.08658},
year = {2019}
}
Comments
18 pages 3 figures, JHEP version DOI: 10.1007/JHEP06(2019)098