TY - JOUR
T1 - Decaying gravitino dark matter and an upper bound on the gluino mass
AU - Hamaguchi, Koichi
AU - Takahashi, Fuminobu
AU - Yanagida, T. T.
N1 - Funding Information:
F.T. thanks C.-R. Chen for comments. This work is supported by World Premier International Research Center Initiative (WPI Initiative), MEXT, Japan.
PY - 2009/6/15
Y1 - 2009/6/15
N2 - 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 reheating temperature and the gluino mass are constrained from above. In particular, the gluino mass is likely within the reach of LHC, if thermal leptogenesis is the source of the observed baryon asymmetry.
AB - 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 reheating temperature and the gluino mass are constrained from above. In particular, the gluino mass is likely within the reach of LHC, if thermal leptogenesis is the source of the observed baryon asymmetry.
UR - http://www.scopus.com/inward/record.url?scp=66149098209&partnerID=8YFLogxK
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U2 - 10.1016/j.physletb.2009.04.070
DO - 10.1016/j.physletb.2009.04.070
M3 - Article
AN - SCOPUS:66149098209
SN - 0370-2693
VL - 677
SP - 59
EP - 61
JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
IS - 1-2
ER -