SUSY-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.

27 pages

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Cited by in corpus (15)

• Neutralino-stop co-annihilation into electroweak gauge and Higgs bosons at one loop
• One-loop corrections to neutralino-stop coannihilation revisited
• SUSY-QCD corrections to stop annihilation into electroweak final states including Coulomb enhancement effects
• One-loop corrections to gaugino (co-)annihilation into quarks in the MSSM
• SUSY-QCD corrections for the direct detection of neutralino dark matter and correlations with the relic density
• Squark-pair annihilation into quarks at next-to-leading order
• Relic density calculations beyond tree-level, exact calculations versus effective couplings: the ZZ final state
• Precision predictions for dark matter with DM@NLO in the MSSM
• Radiative corrections to stop-antistop annihilation into gluons and light quarks
• Radiative corrections to neutralino annihilation: Recent developments
• Heavy neutralino relic abundance with Sommerfeld enhancements - a study of pMSSM scenarios
• The dipole formalism for massive initial-state particles and its application to dark matter calculations
• Impact of SUSY-QCD corrections on neutralino-stop co-annihilation and the neutralino relic density
• Considerations on supersymmetric Dark Matter beyond the MSSM
• Effective Approaches in and Beyond the MSSM : applications to Higgs Physics and Dark Matter observables