Abstract

We perform a detailed analysis of baryon asymmetrygeneration in the νMSM(an extension of the Standard Model bythree singlet Majorana fermions with masses below the Fermi scale). Fixing a number of parameters of the νMSM by the neutrinooscillation data, we determine the remaining domain of the parameterspace from the requirement of successful baryogenesis. We derive, inparticular, the constraints on the mass splitting of a pair of singletfermions, and on the strength of their coupling to ordinary leptons,essential for searches of these particles in rare decays of mesonsand in beam-dump experiments with intensive proton beams.

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