Gravitino dark matter from gluino late decay in split supersymmetry

Journal Article · Sat Oct 01 00:00:00 EDT 2005 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PhysRevD.72.077701· OSTI ID:20713688

Fei, Wang; Wenyu, Wang ^[1]; Jinmin, Yang ^[2]

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1. Institute of Theoretical Physics, Academia Sinica, Beijing 100080 (China)
2. CCAST (World Laboratory), P.O. Box 8730, Beijing 100080 (China)

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)

• OSTI ID: 20713688
• Journal Information: Physical Review. D, Particles Fields, Vol. 72, Issue 7; Other Information: DOI: 10.1103/PhysRevD.72.077701; (c) 2005 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ABUNDANCE
ANISOTROPY
CERN LHC
NONLUMINOUS MATTER
PARTICLE DECAY
RELICT RADIATION
SPARTICLES
SUPERSYMMETRY
TEV RANGE
UNIVERSE