Soft Leptogenesis and Gravitino Dark Matter in Gauge Mediation
arXiv:1007.3323 · doi:10.1016/j.physletb.2010.10.031
Abstract
We study soft leptogenesis in gauge mediated supersymmetry breaking models with an enhanced A-term for the right-handed neutrino. We find that this scenario can explain the baryon asymmetry of the present universe, consistently with the gravitino dark matter for a wide range of gravitino mass m_{3/2}=O(MeV)-O(GeV). We also propose an explicit model which induces the necessary A-term for the right-handed neutrino.
arXiv comment13 pages, 2 figures, references are added, the version to appear in PLB
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