Journal
PHYSICS LETTERS B
Volume 666, Issue 2, Pages 181-184Publisher
ELSEVIER
DOI: 10.1016/j.physletb.2008.07.050
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We investigate gravitino dark matte. scenarios in which the primordial Li-6 production is catalyzed by bound-state formation of long-lived negatively charged particles X- with He-4. In the constrained minimal supersymmetric Standard Model (CMSSM) with the stau (tau) over tilde (-)(1) as the X-, the observationally inferred bound on the primordial Li-6 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. (C) 2008 Elsevier B.V. All rights reserved.
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