Göttingen 2012 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 20: Astroteilchenphysik und Kosmologie (Theorie)

T 20.6: Vortrag

Montag, 27. Februar 2012, 18:00–18:15, VG 3.101

Constraints on Dark Matter Annihilation from the Rare B Decay B_s → µ⁺µ⁻ in the MSSM with Sources of Non-Minimal Flavor Violation — •Christoph Borschensky, Guillaume Chalons, Florian Domingo, and Ulrich Nierste — Karlsruher Institut für Technologie (KIT) - Institut für Theoretische Teilchenphysik

In my talk I will present constraints on the parameter space of the dark matter annihilation cross section which gives us the correct relic density as measured by WMAP. Here, the constraints come from the calculation of the B_s → µ⁺µ⁻ branching fraction, for which strong experimental upper bounds exist. The branching fraction for this process will be calculated in an effective Two Higgs Doublet Model, whose Higgs-fermion-fermion couplings are determined in the minimal supersymmetric standard model with non-minimal sources of flavor violation.