paper

Implications of Catalyzed BBN in the CMSSM with Gravitino Dark Matter

arXiv:0710.2213 · doi:10.1016/j.physletb.2008.07.050

Abstract

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.

arXiv comment4 pages, 2 figures; note and paragraph added; references updated;

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