Reheating Temperature and Gauge Mediation Models of Supersymmetry Breaking

Details Reheating Temperature and Gauge Mediation Models of Supersymmetry Breaking Reheating Temperature and Gauge Mediation Models of Supersymmetry Breaking

2009-08-18

arxiv.org/abs/0908.2502v2

JHEP 0912:026,2009

Physics

High Energy Physics

High Energy Physics - Phenomenology

30 pages, 4 figures; v2: refs added

Scientific paper

10.1088/1126-6708/2009/12/026

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-to-lightest 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.

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