Neutral heavy leptons and electroweak baryogenesis
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Neutral heavy leptons and electroweak baryogenesis

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Neutral heavy leptons and electroweak baryogenesis

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Hernández Gamazo, Pilar; Rius Dionis, Nuria Perfil
This document is a artículoDate1997

Este documento está disponible también en : http://hdl.handle.net/10550/42595
We investigate the possibility that baryogenesis occurs during the weak phase transition in a minimal extension of the Standard Model which contains extra neutral leptons and conserves total lepton number. The necessary CP-violating phases appear in the leptonic Yukawa couplings, We compute the CP asymmetries in both the neutral and the charged lepton fluxes reflected in the unbroken phase. Using present experimental bounds on the mixing angles and Standard Model estimates for the parameters related to the scalar potential, we conclude that it seems unlikely to produce the observed baryon to entropy ratio within this kind of models. However, we comment on the possibility that the constraints on the mixings might be naturally relaxed due to small finite temperature effects

    Hernández Gamazo, Pilar Rius Dionis, Nuria 1997 Neutral heavy leptons and electroweak baryogenesis Nuclear Physics B 495 1-2 57 80
http://dx.doi.org/10.1016/S0550-3213(97)00193-4

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