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Limits on Split Supersymmetry from Gluino Cosmology

A. Arvanitaki·C. Davis·P. W. Graham·A. Pierce·J. G. Wacker
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Abstract

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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A. Arvanitaki, C. Davis, P. W. Graham, A. Pierce, J. G. Wacker. 2005-08-02. Limits on Split Supersymmetry from Gluino Cosmology. https://doi.org/10.1103/physrevd.72.075011

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