2024/11/18 by Aram Hayrapetyan, CMS Collaboration, A. Tumasyan +98 · 1 voice
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ex
paper · pdf · doi:10.1016/j.physletb.2025.139406
openalex publication_date 2025/03/22 · openalex created_date 2025/03/23 · openalex updated_date 2026/07/30
A full set of optimized observables is measured in an angular analysis of the decay B 0 → K ⁎ ( 892 ) 0 μ + μ − using a sample of proton-proton collisions at s = 13 TeV , collected with the CMS detector at the LHC, corresponding to an integrated luminosity of 140 fb − 1 . The analysis is performed in six bins of the squared invariant mass of the dimuon system, q 2 , over the range 1.1 < q 2 < 16 GeV 2 . The results are among the most precise experimental measurements of the angular observables for this decay and are compared to a variety of predictions based on the standard model. Some of these predictions exhibit tension with the measurements.