# The Neutrino Mass Window for Baryogenesis

@article{Buchmuller2003TheNM,
title={The Neutrino Mass Window for Baryogenesis},
author={Wilfried Buchmuller and Pasquale di Bari and Michael Plumacher},
journal={arXiv: High Energy Physics - Phenomenology},
year={2003}
}
• Published 12 February 2003
• Physics
• arXiv: High Energy Physics - Phenomenology
Interactions of heavy Majorana neutrinos in the thermal phase of the early universe may be the origin of the cosmological matter-antimatter asymmetry. This mechanism of baryogenesis implies stringent constraints on light and heavy Majorana neutrino masses. We derive an improved upper bound on the CP asymmetry in heavy neutrino decays which, together with the kinetic equations, yields an upper bound on all light neutrino masses of 0.1 eV. Lepton number changing processes at temperatures above…

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