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Mainz 2014 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 111: Theoretische Astroteilchenphysik und Kosmologie

T 111.7: Vortrag

Donnerstag, 27. März 2014, 18:15–18:30, P101

Gaugino annihilation and co-annihilation into light and heavy quarksBjörn Herrmann1, Michael Klasen2, Karol Kovarik2, Moritz Meinecke2, and •Patrick Steppeler21LAPTh, 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 Os) 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.

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