Measurements of J/ψ decays into ωKKπ, ΦKKπ and ηK0sK± π∓

The decays of J/ψ → ωKKπ and J/ψ → ΦKKπ are studied using 5.8 × 10 7 J/ψ events collected with the Beijing Spectrometer (BESII) at the Beijing Electron-Positron Collider (BEPC). The K 0 s K ± π ∓ and K + K - π 0 systems, produced in J/ψ→ ωKKπ, have enhancements in the invariant mass distributions at around 1.44 GeV/c 2 . However, there is no evidence for mass enhancements in the KKπ system in J/ψ → ΦKKπ. The branching fractions of J/ψ→ ωK 0 s K ± π ∓ , Φ K 0 s K ± π ∓ , ωK*k + c.c., and ΦK*k + c.c. are obtained, and the J/ψ → ηK 0 s k ± π ∓ branching fraction is measured for the first time.