2024/05/17 by Leon Carus, Carus, Leon
Physics and Astronomy · #Black Holes and Theoretical Physics #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions
paper · pdf · doi:10.48550/arxiv.2405.10882
openalex publication_date 2024/05/17 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
The analysis of b→ sℓ+ℓ- flavor-changing neutral current decays is a powerful test of the Standard Model (SM). Due to the strong suppression of these modes in the SM, potential New Physics contributions can have a significant impact on the measured physics observables. The angular analysis of B0 → K*0 μ+ μ- decays gives access to optimized angular observables, which are less dependent on hadronic form factors than for example branching fraction measurements. The angular observables are extracted in bins of the invariant dimuon mass squared, q2, making the analysis model-independent with respect to any assumptions about the shape of the signal distribution in q2. Previous binned measurements of the B0 → K*0 μ+ μ- angular observables by LHCb were in tension with the SM at the level of 3.3 standard deviations (σ). These proceedings present the ongoing effort to update the binned angular analysis to include the full Run 1 and Run 2 data sample of LHCb.