Observation of the decay $B^+ \\to �r(2S) ?(1020) K^+$ in pp collisions at $\\sqrt s =$ 8 TeV
Journal
Physics Letters
Journal Volume
B764
Pages
66-86
Date Issued
2017
Abstract
The decay B+→ψ(2S)ϕ(1020)K+ is observed for the first time using data collected from pp collisions at s=8TeV by the CMS experiment at the LHC, corresponding to an integrated luminosity of 19.6fb−1. The branching fraction of this decay is measured, using the mode B+→ψ(2S)K+ as normalization, to be (4.0±0.4(stat)±0.6(syst)±0.2(B))×10−6, where the third uncertainty is from the measured branching fraction of the normalization channel.
Type
journal article