Reheating Temperature and Gauge Mediation Models of Supersymmetry Breaking
نویسندگان
چکیده
For supersymmetric theories with gravitino dark matter, the maximal reheating temperature consistent with big bang nucleosynthesis bounds arises when the physical gaugino masses are degenerate. We consider the cases of a stau or sneutrino next-tolightest superpartner, which have relatively less constraint from big bang nucleosynthesis. The resulting parameter space is consistent with leptogenesis requirements, and can be reached in generalized gauge mediation models. Such models illustrate a class of theories that overcome the well-known tension between big bang nucleosynthesis and leptogenesis. August 2009 ar X iv :0 90 8. 25 02 v1 [ he pph ] 1 8 A ug 2 00 9
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