Leptogenesis from right-handed neutrino decays to right-handed leptons

Details Leptogenesis from right-handed neutrino decays to right-handed leptons Leptogenesis from right-handed neutrino decays to right-handed leptons

2006-06-16

arxiv.org/abs/hep-ph/0606182v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

To appear in the proceedings of 41st Rencontres de Moriond on Electroweak Interactions and Unified Theories, La Thuile, Aosta

Scientific paper

We investigate what would be the consequences for leptogenesis of the existence of a charged SU(2)_L singlet scalar delta^+. If such a scalar particle exists, it allows the right-handed neutrinos to couple not only to left-handed lepton and Higgs doublets as in ordinary leptogenesis, but also to a right-handed charged lepton and a delta^+. This provides a new source of leptogenesis which can be successful in a non-resonant way at scales as low as TeV. The incorporation of this scenario in left-right symmetric and unified models is discussed.

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