Non-thermal Gravitino Dark Matter in Gauge Mediation

Details Non-thermal Gravitino Dark Matter in Gauge Mediation Non-thermal Gravitino Dark Matter in Gauge Mediation

2009-08-03

arxiv.org/abs/0908.0115v1

JHEP 0909:127,2009

Physics

High Energy Physics

High Energy Physics - Phenomenology

32 pages, 10 figures

Scientific paper

10.1088/1126-6708/2009/09/127

We show that gravitinos produced by decays of a supersymmetry breaking scalar field (the pseudo-moduli field) can naturally explain the observed abundance of dark matter in a certain class of the gauge mediation models. We study the decay processes as well as cosmological constraints on this scenario in detail, particularly focusing on different behavior of the real and imaginary components of the pseudo-moduli field. Cosmologically viable scenario emerges when the gravitino and the pseudo-moduli masses are O(10-100) MeV and O(100) GeV, respectively.

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