Mainz 2014 – scientific programme

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T: Fachverband Teilchenphysik

T 69: Flavour (Theorie/Experiment) 1

T 69.8: Talk

Tuesday, March 25, 2014, 18:30–18:45, GFH 01-701

Status of the ATLAS B_s⁰ → µ⁺µ⁻ Analysis with the LHC Run I Data — Peter Buchholz, Bakul Gaur, Iskander Ibragimov, •Halime Sazak, and Wolfgang Walkowiak — Universität Siegen, Department für Physik, D-57068 Siegen, Germany

The decays B_s⁰ → µ⁺µ⁻ and B⁰ → µ⁺µ⁻ are strongly suppressed in the Standard Model (SM), with predicted branching fractions of 3.65·10⁹ and 1.07·10⁻¹⁰, respectively. The LHCb and CMS experiments have measured the B_s⁰ → µ⁺µ⁻ branching fraction to be in agreement with the SM prediction. The B⁰ → µ⁺µ⁻ branching fraction may be enhanced in SM extensions. These are interesting channels to search for New Physics at the LHC.

The status of the ATLAS B_s⁰ → µ⁺µ⁻ analysis with the LHC run I data is presented.

*Supported by BMBF