arXiv:0901.2168·v2·High Energy Physics — Phenomenology
Decaying gravitino dark matter and an upper bound on the gluino mass
Koichi Hamaguchi🇯🇵 · Fuminobu Takahashi🇯🇵 · T. T. Yanagida🇯🇵
Abstract
We show that, if decaying gravitino dark matter is responsible for the PAMELA and ATIC/PPB-BETS anomalies in the cosmic-ray electron and positron fluxes, both a reheating temperature and a gluino mass are constrained from above. In particular, the gluino mass is likely within the reach of LHC, if the observed baryon asymmetry is explained by thermal leptogenesis scenario.
Comments: 9 pages, 3 figures. v2: references added