Measurement of the $B_s^0\to J/\psi K_S^0$ branching fraction

Abstract

The $B_s^0\to J/\psi K_S^0$ branching fraction is measured in a data sample corresponding to 0.41$f{b}^{-1}$ of integrated luminosity collected with the LHCb detector at the LHC. This channel is sensitive to the penguin contributions affecting the sin2$\beta$ measurement from $B^0\to J/\psi K_S^0$ The time-integrated branching fraction is measured to be $BF(B_s^0\to J/\psi K_S^0)=(1.83\pm 0.28)\times 10^{-5}$. This is the most precise measurement to date.

References in corpus (16)

• PYTHIA 6.4 Physics and Manual
• PYTHIA 6.2 Physics and Manual
• Averages of $b$-hadron, $c$-hadron, and $\tau$-lepton properties as of summer 2016
• sPlot: a statistical tool to unfold data distributions
• Decay Chain Fitting with a Kalman Filter
• Averages of b-hadron, c-hadron, and tau-lepton Properties
• Branching Ratio Measurements of $B_s$ Decays
• Measurement of b hadron production fractions in 7 TeV pp collisions
• Precise measurement of the CP violation parameter sin2phi_1 in B0-->(c\bar c)K0 decays
• Extracting $\gamma$ from $B_{s(d)}\to J/\psi K_S$ and $B_{d(s)}\to D_{d(s)}^{+}{D}_{d(s)}^{-}$
• The Golden Modes B^0 -> J/psi K_{S,L} in the Era of Precision Flavour Physics
• Measurement of b-hadron masses
• Extracting gamma and Penguin Topologies through CP Violation in B_s^0 -> J/psi K_S
• Determination of f_s/f_d for 7 TeV pp collisions and a measurement of the branching fraction of the decay Bd->D-K+
• Observation of B0_s -> J/psi K*(892)0 and B0_s -> J/psi K0_S Decays
• Extracting gamma and Penguin Parameters from B^0_s -> J/psi K_S

Cited by in corpus (17)

• Averages of $b$-hadron, $c$-hadron, and $\tau$-lepton properties as of summer 2016
• Averages of $b$-hadron, $c$-hadron, and $\tau$-lepton properties as of 2018
• Averages of $b$-hadron, $c$-hadron, and $\tau$-lepton properties as of 2021
• Implications of LHCb measurements and future prospects
• Analysis of the resonant components in Bs->J/ψπ+π-
• Analysis of the resonant components in B0->J/ψpi+pi-
• Determining weak phases from B->J/Psi P decays
• Rare Decays and CP Violation in the $B_s$ System
• Observations of $B_s^0\to \psi (2S)\eta$ and $B_{(s)}^0\to \psi (2S){\pi }^{+}{\pi }^{-}$ decays
• Measurement of the effective B_s^0 -> J/ψ K_S^0 lifetime
• Study of $B_s$ $\to$ ${\eta }_c(J/\psi )D$ decay with perturbative QCD approach
• First evidence for direct CP violation in beauty to charmonium decays
• On the model dependence of measured Bs-meson branching fractions
• Statistical biases in measurements with multiple candidates
• Penguin contributions to B to J/Psi P Decays
• Prospects for time-dependent asymmetries at LHCb
• Towards New Frontiers in CP Violation in B Decays