Measurement of the branching fraction for $\psi (3686)\to \omega K^{+}{K}^{-}$

Abstract

With $1.06\times 10^8$ $\psi (3686)$ events collected with the BESIII detector, the branching fraction of $\psi (3686)\to \omega K^{+}{K}^{-}$ is measured to be $(1.54\pm 0.04\pm 0.11)\times 10^{-4}$. This is the most precise result to date, due to the largest $\psi (3686)$ sample, improved signal reconstruction efficiency, good simulation of the detector performance, and a more accurate knowledge of the continuum contribution. Using the branching fraction of $J/\psi \to \omega K^{+}{K}^{-}$, the ratio $\mathcal{B}(\psi (3868)\to K^{+}{K}^{-})/\mathcal{B}(J/\psi \to K^{+}{K}^{-})$ is determined to be $(18.4\pm 3.7)\%$. This constitutes a significantly improved test of the $12\%$ rule, with the uncertainty now dominated by the $J/\psi$ branching fraction.

References in corpus (14)

• Design and Construction of the BESIII Detector
• The Precision Monte Carlo Event Generator KK For Two-Fermion Final States In e+e- Collisions
• Coherent Exclusive Exponentiation For Precision Monte Carlo Calculations
• Search for hadronic transition ${\chi }_{cJ}\to {\eta }_c{\pi }^{+}{\pi }^{-}$ and observation of ${\chi }_{cJ}\to K\bar{K}\pi \pi \pi$
• Branching fraction measurements of χ_{c0} and χ_{c2} to π^0π^0 and ηη
• Study of ${\chi }_{cJ}$ radiative decays into a vector meson
• Determination of the number of $\psi (3686)$ events at BESIII
• Study of decay dynamics and $CP$ asymmetry in $D^{+}\to K_L^0{e}^{+}{\nu }_e$ decay
• Determination of the number of ${\psi }^{\prime }$ event at BESIII
• Trigger efficiencies at BES III
• Observation of Thirteen New Exclusive Multi-Body Hadronic Decays of the $\psi (2S)$
• Evidence for η_{c}(2S) in ψ(3686) \to γK_{S}^{0}K^{\pm}π^{\mp}π^{+}π^{-}
• Psi(2S) two- and three-body hadronic decays
• Experimental study of $\psi (2S)$ decays to $\K^+ K^- π^+ π^- π^0$ final states

Cited by in corpus (4)

• Evidence of a resonant structure in the $e^{+}{e}^{-}\to {\pi }^{+}{D}^0{D}^{\ast -}$ cross section between 4.05 and 4.60 GeV
• The decay widths, the decay constants, and the branching fractions of a resonant state
• Observation of $\psi (3686)\to p\bar{p}{\eta }^{\prime }$ and improved measurement of $J/\psi \to p\bar{p}{\eta }^{\prime }$
• Measurement of the branching fraction for $\psi (3686)\to \omega K_S^0{K}_S^0$