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Neutralino relic density in supersymmetric GUTs with no-scale boundary conditions above the unification scale

Stefano Profumo
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Abstract

We investigate SU(5) and SO(10) GUTs with vanishing scalar masses and trilinear scalar couplings at a scale higher than the unification scale. The parameter space of the models, further constrained by b-τYukawa coupling unification, consists of a common gaugino mass and of \tanβ. We analyze the low energy phenomenology, finding that A-pole annihilations of neutralinos and/or coannihilations with the lightest stau drive the relic density within the cosmologically preferred range in a significant region of the allowed parameter space. Implications for neutralino direct detection and for CERN LHC experiments are also discussed.

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Stefano Profumo. 2003-06-26. Neutralino relic density in supersymmetric GUTs with no-scale boundary conditions above the unification scale. https://doi.org/10.1088/1126-6708%2F2003%2F06%2F052

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