One-loop corrections to gaugino (co-)annihilation into quarks in the MSSM

Abstract

We present the full $\mathcal{O}({\alpha }_s)$ supersymmetric QCD corrections for gaugino annihilation and co-annihilation into light and heavy quarks in the Minimal Supersymmetric Standard Model (MSSM). We demonstrate that these channels are phenomenologically relevant within the so-called phenomenological MSSM. We discuss selected technical details such as the dipole subtraction method in the case of light quarks and the treatment of the bottom quark mass and Yukawa coupling. Numerical results for the (co-)annihilation cross sections and the predicted neutralino relic density are presented. We show that the impact of including the radiative corrections on the cosmologically preferred region of the parameter space is larger than the current experimental uncertainty from Planck data.

19 pages, 9 figures. Matches version published in Phys.Rev.D

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• Precision predictions for dark matter with DM@NLO in the MSSM
• Radiative corrections to stop-antistop annihilation into gluons and light quarks
• Heavy neutralino relic abundance with Sommerfeld enhancements - a study of pMSSM scenarios
• Predicting the neutralino relic density in the MSSM more precisely
• Implications of the Higgs discovery on minimal dark matter