A novel washout effect in the flavored leptogenesis

Details A novel washout effect in the flavored leptogenesis A novel washout effect in the flavored leptogenesis

2007-03-16

arxiv.org/abs/hep-ph/0703183v1

JHEP0709:043,2007

Physics

High Energy Physics

High Energy Physics - Phenomenology

14 pages, 7 figures

Scientific paper

10.1088/1126-6708/2007/09/043

We investigate a flavored washout effect due to the decay of the lightest right-handed neutrino, assuming that there is non-vanishing initial lepton asymmetry and the decay of the lightest right-handed neutrinos gives negligible contribution to the asymmetry. We figure out general features of the washout effect. It is shown that there is a novel parameter region where an effect that is negligible in most cases plays a critical role and a sizable lepton asymmetry can survive against the washout process even in a strong washout region.

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