Observation of the Λb0→J/ψΛϕ Decay in Proton-Proton Collisions at √s = 13 TeV

Physics Letters B 2020
Viesturs Veckalns

The observation of the Λb0→J/ψΛϕ decay is reported using proton-proton collision data collected at s=13TeV by the CMS experiment at the LHC in 2018, corresponding to an integrated luminosity of 60fb−1. The ratio of the branching fractions B(Λb0→J/ψΛϕ)/B(Λb0→ψ(2S)Λ) is measured to be (8.26±0.90(stat)±0.68(syst)±0.11(B))×10−2, where the first uncertainty is statistical, the second is systematic, and the last uncertainty reflects the uncertainties in the world-average branching fractions of ϕ and ψ(2S) decays to the reconstructed final states.

Keywords
b physics | CMS | Computing | Heavy-flavor spectroscopy
DOI
10.1016/j.physletb.2020.135203
Hyperlink
https://www.sciencedirect.com/science/article/pii/S0370269320300071?via%3Dihub

Veckalns, V., CERN international group of authors. Observation of the Λb0→J/ψΛϕ Decay in Proton-Proton Collisions at √s = 13 TeV. Physics Letters B, 2020, Vol. 802, Article number 135203. ISSN 0370-2693. Available from: doi:10.1016/j.physletb.2020.135203

Publication language
English (en)