Electroweak Baryogenesis from Late Neutrino Masses

Details Electroweak Baryogenesis from Late Neutrino Masses Electroweak Baryogenesis from Late Neutrino Masses

2005-04-27

arxiv.org/abs/hep-ph/0504248v2

Phys.Rev.Lett.95:111301,2005

Physics

High Energy Physics

High Energy Physics - Phenomenology

5 pages, 2 figures, references added

Scientific paper

10.1103/PhysRevLett.95.111301

Electroweak Baryogenesis, given a first order phase transition, does not work in the standard model because the quark Yukawa matrices are too hierarchical. On the other hand, the neutrino mass matrix is apparently not hierarchical. In models with neutrino mass generation at low scales, the neutrino Yukawa couplings lead to large CP-violation in the reflection probability of heavy leptons by the expanding Higgs bubble wall, and can generate the observed baryon asymmetry of the universe. The mechanism predicts new vector-like leptons below the TeV scale and sizable mu -> e processes.

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