Limits on Split Supersymmetry from Gluino Cosmology

Details Limits on Split Supersymmetry from Gluino Cosmology Limits on Split Supersymmetry from Gluino Cosmology

2005-04-22

arxiv.org/abs/hep-ph/0504210v3

Phys.Rev. D72 (2005) 075011

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 pages, 2 figures. v2: Gluino lifetime corrected, conclusions unchanged. v3: references added

Scientific paper

10.1103/PhysRevD.72.075011

An upper limit on the masses of scalar superpartners in split supersymmetry is found by considering cosmological constraints on long-lived gluinos. Over most of parameter space, the most stringent constraint comes from big bang nucleosynthesis. A TeV mass gluino must have a lifetime of less than 100 seconds to avoid altering the abundances of D and Li-6. This sets an upper limit on the supersymmetry breaking scale of 10^9 GeV.

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