Split Fermions Baryogenesis from the Kobayashi-Maskawa Phase

Details Split Fermions Baryogenesis from the Kobayashi-Maskawa Phase Split Fermions Baryogenesis from the Kobayashi-Maskawa Phase

2005-05-26

arxiv.org/abs/hep-ph/0505222v1

Phys.Rev. D72 (2005) 103522

Physics

High Energy Physics

High Energy Physics - Phenomenology

36 pages, 1 figure

Scientific paper

A new scenario of baryogenesis is presented, within the split fermions framework. Our model employs a first order phase transition of the localizer field. The standard model (SM), Kobayashi-Maskawa phase induces a sizable CP asymmetry. The usual suppression of CP violation which arises in the SM baryogenesis is absent due to the existence of order one Yukawa couplings before the fermions are localized in the extra dimension. Models of the above type naturally contain B-L violating operators, allowed by the SM symmetries, which induce the baryon asymmetry. Our mechanism demonstrates the following concept: the flavor puzzle and the SM failure to create the baryon asymmetry are linked and may have a common resolution which does not rely on introduction of new CP violating sources.

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