Branching fraction measurement of the decay $B^{+}\to \psi (2S)\varphi (1020)K^{+}$

Abstract

The branching fraction of the decay $B^{+}\to \psi (2S)\varphi (1020)K^{+}$, relative to the topologically similar decay $B^{+}\to J/\psi \varphi (1020)K^{+}$, is measured using proton-proton collision data collected by the LHCb experiment at center-of-mass energies of 7, 8, and 13 TeV, corresponding to an integrated luminosity of $9{\mathrm{fb}}^{-1}$. The ratio is found to be $0.061\pm 0.004\pm 0.009$, where the first uncertainty is statistical and the second systematic. Using the world-average branching fraction for $B^{+}\to J/\psi \varphi (1020)K^{+}$, the branching fraction for the decay $B^{+}\to \psi (2S)\varphi (1020)K^{+}$ is found to be $(3.0\pm 0.2\pm 0.5\pm 0.2)\times 10^{-6}$, where the first uncertainty is statistical, the second systematic, and the third is due to the branching fraction of the normalization channel.

All figures and tables, along with machine-readable versions and any supplementary material and additional information, are available at https://lbfence.cern.ch/alcm/public/analysis/full-details/3320/ (LHCb public pages)

References in corpus (6)

• PYTHIA 6.4 Physics and Manual
• Performance of the LHCb Vertex Locator
• Evidence for a Narrow Near-Threshold Structure in the $J/\psi \varphi$ Mass Spectrum in $B^{+}\to J/\psi \varphi K^{+}$ Decays
• Observation of new resonances decaying to $J/\psi K^{+}$ and $J/\psi \varphi$
• Reweighting with Boosted Decision Trees
• Observation of the decay B+ to psi(2S) phi(1020) K+ in pp collisions at sqrt(s) = 8 TeV