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1. chinaXiv:201605.01775 [pdf]

Gravitino dark matter from gluino late decay in split supersymmetry

Wang, F; Wang, WY; Yang, JM
Subjects: Physics >> The Physics of Elementary Particles and Fields

In split-supersymmetry (split-SUSY), gluino is a metastable particle and thus can freeze out in the early universe. The late decay of such a long-life gluino into the lightest supersymmetric particle (LSP) may provide much of the cosmic dark-matter content. In this work, assuming the LSP is gravitino produced from the late decay of the metastable gluino, we examine the Wilkinson microwave anisotropy probe (WMAP) dark-matter constraints on the gluino mass. We find that to provide the full abundance of dark matter, the gluino must be heavier than about 14 TeV and thus not accessible at the CERN large hadron collider (LHC).

submitted time 2016-05-15 Hits1249Downloads658 Comment 0

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