Gauge mediation in supergravity and gravitino dark matter

Details Gauge mediation in supergravity and gravitino dark matter Gauge mediation in supergravity and gravitino dark matter

2006-11-09

arxiv.org/abs/hep-ph/0611111v2

Phys.Rev.D75:055003,2007

Physics

High Energy Physics

High Energy Physics - Phenomenology

22 pages, 2 figures, a reference added, version to appear in PRD

Scientific paper

10.1103/PhysRevD.75.055003

Gravitinos and hidden sector fields often cause a cosmological disaster in supersymmetric models. We find that a model with gravitational gauge mediation solves such a problem quite naturally. The mu-problem is also absent in the model. Moreover, the abundance of gravitinos explains correct amount of dark matter of the universe. The dark matter abundance can be calculated without detailed information on the thermal history of the universe such as the reheating temperature after inflation.

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