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Supersymmetric QCD effects on neutralino dark matter annihilation beyond scalar or gaugino mass unification

Abstract : We describe in detail our calculation of the full supersymmetric (SUSY) QCD corrections to neutralino annihilation into heavy quarks and extend our numerical analysis of the resulting dark matter relic density to scenarios without scalar or gaugino mass unification. In these scenarios, the final state is often composed of top quarks and the annihilation proceeds through Z^0-boson or scalar top-quark exchanges. The impact of the corrections is again shown to be sizable, so that they must be taken into account systematically in global analyses of the supersymmetry parameter space.
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http://hal.in2p3.fr/in2p3-00401858
Contributor : Emmanuelle Vernay <>
Submitted on : Monday, July 6, 2009 - 11:29:08 AM
Last modification on : Thursday, November 19, 2020 - 12:58:18 PM

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B. Herrmann, M. Klasen, K. Kovarik. Supersymmetric QCD effects on neutralino dark matter annihilation beyond scalar or gaugino mass unification. Physical Review D, American Physical Society, 2009, 80, pp.085025. ⟨10.1103/PhysRevD.80.085025⟩. ⟨in2p3-00401858⟩

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