Measurement of the B0s→μ+μ− Decay Properties and Search for the B0→μ+μ− Decay in Proton-Proton Collisions at √s = 13 TeV

Physics Letters B 2023
Kārlis Dreimanis, Guntis Pikurs, Andris Potrebko, Markus Seidel, Viesturs Veckalns, CMS Collaboration

Measurements are presented of the Bs0→μ+μ− branching fraction and effective lifetime, as well as results of a search for the B0→μ+μ− decay in proton-proton collisions at s=13TeV at the LHC. The analysis is based on data collected with the CMS detector in 2016–2018 corresponding to an integrated luminosity of 140fb−1. The branching fraction of the Bs0→μ+μ− decay and the effective Bs0 meson lifetime are the most precise single measurements to date. No evidence for the B0→μ+μ− decay has been found. All results are found to be consistent with the standard model predictions and previous measurements.

Keywords
CMS BPH Flavor physics Rare decays
DOI
10.1016/j.physletb.2023.137955
Hyperlink
https://www.sciencedirect.com/science/article/pii/S0370269323002897?via%3Dihub

The CMS Collaboration, A.Tumasyan, K.Dreimanis, G.Pikurs, A.Potrebko, M.Seidel, V.Veckalns ... [et al.]. Measurement of the B0s→μ+μ− Decay Properties and Search for the B0→μ+μ− Decay in Proton-Proton Collisions at √s = 13 TeV. Physics Letters B, 2023, Vol. 842, Article number 137955. ISSN 0370-2693. Pieejams: doi:10.1016/j.physletb.2023.137955

Publication language
English (en)