Mainz 2014 – scientific programme
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T: Fachverband Teilchenphysik
T 111: Theoretische Astroteilchenphysik und Kosmologie
T 111.7: Talk
Thursday, March 27, 2014, 18:15–18:30, P101
Gaugino annihilation and co-annihilation into light and heavy quarks — Björn Herrmann1, Michael Klasen2, Karol Kovarik2, Moritz Meinecke2, and •Patrick Steppeler2 — 1LAPTh, Université de Savoie/CNRS, 9 Chemin de Bellevue, B.P. 110, F-74941 Annecy-le-Vieux, France — 2Institut für Theoretische Physik, Westfälische Wilhelms-Universität Münster, Wilhelm-Klemm-Straße 9, D-48149 Münster, Germany
We present the full O(αs) 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. Numerical results for the (co-)annihilation cross sections and the predicted neutralino relic density are presented. We show that the impact of including the corrections on the cosmologically preferred region of parameter space is larger than the current experimental uncertainty from PLANCK data.