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Baryon Asymmetry of the Universe in the NuMSM

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arxiv 1006.0133 v3 pith:J7Z3YVC5 submitted 2010-06-01 hep-ph astro-ph.HE

Laurent Canetti , Mikhail Shaposhnikov This is my paper
classification hep-phastro-ph.HE
keywords numsmasymmetrybaryonfermionssingletanalysisbaryogenesisbeam-dump
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We perform a detailed analysis of baryon asymmetry generation in the NuMSM (an extension of the Standard Model by three singlet Majorana fermions with masses below the Fermi scale). Fixing a number of parameters of the NuMSM by the neutrino oscillation data, we determine the remaining domain of the parameter space from the requirement of successful baryogenesis. We derive, in particular, the constraints on the mass splitting of a pair of singlet fermions, and on the strength of their coupling to ordinary leptons, essential for searches of these particles in rare decays of mesons and in beam-dump experiments with intensive proton beams.

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