Experimental study of $\ddot{I}ˆ(2S)$ decays to $\K^+ K^- π^+ π^- π^0$ final states

Abstract

$K^{+}{K}^{-}\ddot{I}{€}^{+}\ddot{I}{€}^{-}\ddot{I}{€}^0$ final states are studied using a sample of $14\times 10^6$ $\ddot{I}ˆ(2S)$ decays collected with the Beijing Spectrometer (BESII) at the Beijing Electron-Position Collider. The branching fractions of $\ddot{I}ˆ(2S)$ decays to $K^{+}{K}^{-}\ddot{I}{€}^{+}\ddot{I}{€}^{-}\ddot{I}{€}^0$, $\ddot{I}‰K^{+}{K}^{-}$, $\ddot{I}‰f_0(1710)$, $K^{\ast }(892{)}^0{K}^{-}\ddot{I}{€}^{+}\ddot{I}{€}^0+c.c.$, $K^{\ast }(892{)}^{+}{K}^{-}\ddot{I}{€}^{+}\ddot{I}{€}^{-}+c.c.$, $K^{\ast }(892{)}^{+}{K}^{-}\ddot{I}{}^0+c.c.$ and $K^{\ast }(892{)}^0{K}^{-}\ddot{I}{}^{+}+c.c.$ are determined. The first two agree with previous measurements, and the last five are first measurements.

19 pages, 9 figures