TeV Scale Leptogenesis With Heavy Neutrinos
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Following a baryogenesis scenario proposed by Lazarides, Panagiotakopoulos and Shafi, we show how the observed baryon asymmetry can be explained via resonant leptogenesis in a class of supersymmetric models with an intermediate mass scale M_I<~10^9 GeV. It involves the out of equilibrium decay of heavy (<~M_I) right handed neutrinos at a temperature close to the TeV supersymmetry breaking scale. Such models can also resolve the MSSM mu problem.
1+9 pages, no figure, comments added, minor revisions, to appear in PRD
1+9 pages, no figure, comments added, minor revisions, to appear in PRD