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arXiv · 1903.08658

Stability, reheating and leptogenesis

Djuna Croon·Nicolas Fernandez·David McKeen·Graham White
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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.

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Djuna Croon, Nicolas Fernandez, David McKeen, Graham White. 2019-03-20. Stability, reheating and leptogenesis. https://arxiv.org/abs/1903.08658

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