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T: Fachverband Teilchenphysik

T 111: Theoretische Astroteilchenphysik und Kosmologie

T 111.8: Vortrag

Donnerstag, 27. März 2014, 18:30–18:45, P101

The impact of SUSY-QCD-corrections to (co-)annihilation-processes on Neutralino Dark Matter — Julia Harz¹, Björn Herrmann², Michael Klasen³, Karol Kovarik³, •Moritz Meinecke³, and Patrick Steppeler³ — ¹University College London — ²Laboratoire d'Annecy de Physique Théorique — ³Institute of Theoretical Physics Münster

A powerful method to constrain the parameter space of theories be- yond the Standard Model is to compare the predicted dark matter relic density with cosmological precision measurements, in particular the Planck-data. On the particle physics side, the main uncertainty on the relic density arises from the (co-)annihilation cross sections of the dark matter particle. After a motivation for including higher order corrections in the prediction of the relic density, new results on the impact of stop-coannihilation on Neutralino-dark matter, calculated at the 1-loop-level in SUSY-QCD, as well as the importance of the so called Sommerfeld-enhancement will be discussed.