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T: Fachverband Teilchenphysik

T 43: Bottom-Quark: Produktion 2

T 43.6: Talk

Friday, March 2, 2012, 09:45–10:00, ZHG 004

B^± → J/ψ K^± as Reference Channel in the Search for B_s → µ⁺µ⁻ in ATLAS^∗ — Peter Buchholz, •Bakul Gaur, Kai Grybel, Iskander Ibragimov, Valentin Sipica, and Wolfgang Walkowiak — University of Siegen

The decay of B_s → µ⁺µ⁻ is strongly suppressed in the Standard Model (SM). SM extensions, however, predict enhanced branching fractions compared to the SM (∼ 3.6 · 10⁻⁹). Thus, B_s → µµ is an interesting channel for discovering New Physics at the LHC.

The B_s → µ⁺µ⁻ branching fraction is measured relative to a reference channel, B^± → J/ψ K⁺. The estimation of the B^± yield, and the computation of its uncertainties is presented.

^∗ Supported by BMBF