Measurements of $J/\ensuremath{\psi}$ decays into $\ensuremath{\omega}K\overline{K}\ensuremath{\pi}$, $\ensuremath{\phi}K\overline{K}\ensuremath{\pi}$ and $\ensuremath{\eta}{K}_{s}^{0}{K}^{\ifmmode\pm\else\textpm\fi{}}{\ensuremath{\pi}}^{\ensuremath{\mp}}$

Measurements of $J / ψ$ decays into $ω K \bar{K} π$ , $ϕ K \bar{K} π$ and $η K_{s}^{0} K^{\pm} π^{\mp}$

M. Ablikim et al. (BES Collaboration)

Phys. Rev. D 77, 032005 – Published 27 February 2008

Abstract

The decays of $J / ψ \to ω K \bar{K} π$ and $J / ψ \to ϕ K \bar{K} π$ are studied using $5.8 \times 10^{7}$ $J / ψ$ events collected with the Beijing Spectrometer (BESII) at the Beijing Electron-Positron Collider (BEPC). The $K_{S}^{0} K^{\pm} π^{\mp}$ and $K^{+} K^{-} π^{0}$ systems, produced in $J / ψ \to ω K \bar{K} π$ , have enhancements in the invariant mass distributions at around $1.44 GeV / c^{2}$ . However, there is no evidence for mass enhancements in the $K \bar{K} π$ system in $J / ψ \to ϕ K \bar{K} π$ . The branching fractions of $J / ψ \to ω K_{S}^{0} K^{\pm} π^{\mp}$ , $ϕ K_{S}^{0} K^{\pm} π^{\mp}$ , $ω K^{*} \bar{K} + c . c .$ , and $ϕ K^{*} \bar{K} + c . c .$ are obtained, and the $J / ψ \to η K_{S}^{0} K^{\pm} π^{\mp}$ branching fraction is measured for the first time.