Study of the<i>KK¯π</i>final state in<i>J/ψ</i>hadronic decays

Abstract

The reactions J/\ensuremath{\psi}\ensuremath{\rightarrow}\ensuremath{\omega}KK\ifmmode\bar\else\textasciimacron\fi{}\ensuremath{\pi} and J/\ensuremath{\psi}\ensuremath{\rightarrow}\ensuremath{\varphi}KK\ifmmode\bar\else\textasciimacron\fi{}\ensuremath{\pi} have been studied in a sample of 5.8\ifmmode\times\else\texttimes\fi{}${10}^{6}$ produced J/\ensuremath{\psi} decays. The systems ${K}^{\ifmmode\pm\else\textpm\fi{}}$${K}_{S}^{0}$${\ensuremath{\pi}}^{\ensuremath{\mp}}$ and ${K}^{+}$${K}^{\mathrm{\ensuremath{-}}}$${\ensuremath{\pi}}^{0}$ produced in association with an \ensuremath{\omega} have enhancements in the mass distribution near 1.44 GeV/${c}^{2}$. The observed angular distributions are consistent with ${J}^{P}$${=1}^{+}$ and do not favor a ${J}^{P}$${=0}^{\mathrm{\ensuremath{-}}}$ assignment. No signal is seen at the nominal ${f}_{1}$(1285) mass. The reverse pattern is observed in the KK\ifmmode\bar\else\textasciimacron\fi{}\ensuremath{\pi} system produced in association with a \ensuremath{\varphi}, which shows an enhancement near 1.280 GeV/${c}^{2}$, and no evidence for structure at 1.4 GeV/${c}^{2}$.