Göttingen 2025 – scientific programme
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T: Fachverband Teilchenphysik
T 73: Flavour Physics IV
T 73.4: Talk
Thursday, April 3, 2025, 17:00–17:15, VG 1.103
Analysis of Rare B(s)0 → µ+ µ− Decays using Run 3 LHCb Data — Johannes Albrecht1, Lukas Bertsch1, Claudiu Cotirlan2, Joel Mainusch1, Biljana Mitreska1, and •Jan Peter Wagner1 — 1TU Dortmund University, Dortmund, Germany — 2University of Manchester, Manchester, England
In 2024, the LHCb experiment recorded an integrated luminosity of more than 9 fb−1 of proton-proton collisions which is larger than the samples recorded during the combined LHC data-taking periods Run 1 and Run 2. A key measurement of the LHCb collaboration are the branching fraction measurements of the statistically limited rare B(s)0 → µ+ µ− decays. In this contribution studies on normalisation and control channels are presented using 2024 LHCb data and simulation. These include detector performance studies and studies comparing 2024 measurements with the already published Run 2 results.
Keywords: Rare Decays; LHCb; B physics; branching fraction; FCNC