Article ID Journal Published Year Pages File Type
9861085 Physics Letters B 2005 8 Pages PDF
Abstract
We propose a consistent scenario of the evolution of the universe based on the large cutoff supergravity (LCSUGRA) hypothesis of supersymmetry breaking, where the gravitino and sfermion become as heavy as ∼O(1-10TeV). With such a heavy gravitino, baryon asymmetry of the universe can be generated by the non-thermal leptogenesis via an inflaton decay without conflicting the serious gravitino problem. We also see that, in the LCSUGRA scenario, relic density of the lightest superparticle becomes consistent with the WMAP value of the dark matter density in the parameter region required for the successful non-thermal leptogenesis.
Related Topics
Physical Sciences and Engineering Physics and Astronomy Nuclear and High Energy Physics
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