Leptogenesis with small violation of B-L

Leptogenesis with small violation of B-L

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Leptogenesis with small violation of B-L

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Racker, Jean Jacques; Peña Jiménez, Manuel; Rius Dionis, Nuria Perfil
This document is a artículoDate2012

Este documento está disponible también en : http://hdl.handle.net/10550/42583
We analyze leptogenesis in the context of seesaw models with almost conserved lepton number, focusing on the L-conserving contribution to the flavoured CP asymmetries. We find that, contrary to previous claims, successful leptogenesis is feasible for masses of the lightest heavy neutrino as low as M-1 similar to 10(6) GeV, without resorting to the resonant enhancement of the CP asymmetry for strongly degenerate heavy neutrinos. This lower limit renders thermal leptogenesis compatible with the gravitino bound in supersymmetric scenarios.

    Racker, Jean Jacques Peña Jiménez, Manuel Rius Dionis, Nuria 2012 Leptogenesis with small violation of B-L Journal Of Cosmology And Astroparticle Physics 07 7 030-1 030-20

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