2024/05/14 by 陈晨, Chen, Chen
Computer Science · Physics and Astronomy · #Computational Physics and Python Applications #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.2405.08953
openalex publication_date 2024/05/14 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/01
This report introduces two recent measurements of semileptonic b-hadron decays at the LHCb experiment, including a test of Lepton Flavour Universality (LFU) using B0 → D(*)+ l- νl decays where l∈\μ,τ\, and a study of the D*+ longitudinal polarisation in the B0 → D*+ τ- ντ decay. With the inclusion of the new results of the LFU ratios, the world average on R(D) and R(D^*), still shows a tension over three standard deviations from the SM prediction, while the measured D*+ longitudinal polarisation is compatible with the SM value.