A Supersymmetric Model for Dark Matter and Baryogenesis Motivated by the Recent CDMS Result

Rouzbeh Allahverdi; Bhaskar Dutta; Rabindra N. Mohapatra; Kuver Sinha

doi:10.1103/physrevlett.111.051302

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arXiv · 1305.0287

A Supersymmetric Model for Dark Matter and Baryogenesis Motivated by the Recent CDMS Result

Rouzbeh Allahverdi·Bhaskar Dutta·Rabindra N. Mohapatra·Kuver Sinha

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Abstract

We discuss a supersymmetric model for cogenesis of dark and baryonic matter where the dark matter (DM) has mass in the 8-10 GeV range as indicated by several direct detection searches including most recently the CDMS experiment with the desired cross section. The DM candidate is a real scalar filed. Two key distinguishing features of the model are the following: (i) in contrast with the conventional WIMP dark matter scenarios where thermal freeze-out is responsible for the observed relic density, our model uses non-thermal production of dark matter after reheating of the universe caused by moduli decay at temperatures below the QCD phase transition, a feature which alleviates the relic over-abundance problem caused by small annihilation cross section of light DM particles; (ii) baryogenesis occurs also at similar low temperatures from the decay of TeV scale mediator particles arising from moduli decay. A possible test of this model is the existence of colored particles with TeV masses accessible at the LHC.

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Rouzbeh Allahverdi, Bhaskar Dutta, Rabindra N. Mohapatra, Kuver Sinha. 2013-05-01. A Supersymmetric Model for Dark Matter and Baryogenesis Motivated by the Recent CDMS Result. https://doi.org/10.1103/physrevlett.111.051302

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