Implications of Catalyzed BBN in the CMSSM with Gravitino Dark Matter

Details Implications of Catalyzed BBN in the CMSSM with Gravitino Dark Matter Implications of Catalyzed BBN in the CMSSM with Gravitino Dark Matter

2007-10-11

arxiv.org/abs/0710.2213v3

Phys.Lett.B666:181-184,2008

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages, 2 figures; note and paragraph added; references updated;

Scientific paper

10.1016/j.physletb.2008.07.050

We investigate gravitino dark matter scenarios in which the primordial ^6Li production is catalyzed by bound-state formation of long-lived negatively charged particles X^- with ^4He. In the constrained minimal supersymmetric Standard Model (CMSSM) with the stau^- as the X^-, the observationally inferred bound on the primordial ^6Li abundance allows us to derive a rigid lower limit on the gaugino mass parameter for a standard cosmological history. This limit can have severe implications for supersymmetry searches at the Large Hadron Collider and for the reheating temperature after inflation.

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