Measurements of the observed cross sections for e+e -> exclusive light hadrons containing K^S_0 meson at \sqrt{s} = 3.773 and 3.650 GeV

Abstract

By analyzing the data sets of 17.3 pb${}^{-1}$ taken at $\sqrt{s}=3.773$ GeV and of 6.5 pb${}^{-1}$ taken at $\sqrt{s}=3.650$ GeV with the BES-II detector at the BEPC collider, we measure the observed cross sections for the exclusive light hadron final states of $K_S^0{K}^{-}\ddot{I}{€}^{+}$, $K_S^0{K}^{-}\ddot{I}{€}^{+}\ddot{I}{€}^0$, $K_S^0{K}^{-}\ddot{I}{€}^{+}\ddot{I}{€}^{+}\ddot{I}{€}^{-}$, $K_S^0{K}^{-}\ddot{I}{€}^{+}\ddot{I}{€}^{+}\ddot{I}{€}^{-}\ddot{I}{€}^0$, $K_S^0{K}^{-}\ddot{I}{€}^{+}\ddot{I}{€}^{+}\ddot{I}{€}^{+}\ddot{I}{€}^{-}\ddot{I}{€}^{-}$ and $K_S^0{K}^{-}\ddot{I}{€}^{+}\ddot{I}{€}^0\ddot{I}{€}^0$ produced in $e^{+}{e}^{-}$ annihilation at the two energy points. We set the upper limits on the observed cross sections and the branching fractions for $\ddot{I}ˆ(3770)$ decay to these final states at 90% C.L..

6 pages, 1 figure