Measurement of ${\ensuremath{\chi}}_{{c}_{J}}$ decays to $2({\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}})p\overline{p}$ final states

Measurement of $χ_{c_{J}}$ decays to $2 (π^{+} π^{-}) p \bar{p}$ final states

M. Ablikim et al. (BES Collaboration)

Phys. Rev. D 73, 052006 – Published 13 March 2006

Abstract

Using $χ_{c_{J}} \to 2 (π^{+} π^{-}) p \bar{p}$ decays from $14 \times 10^{6} ψ (2 S)$ events accumulated by the BESII detector at the BEPC, the intermediate states $Ξ^{-} {\bar{Ξ}}^{+}$ , $Λ \bar{Λ} π^{+} π^{-}$ , and $K_{S}^{0} K_{S}^{0} p \bar{p}$ are studied, and their branching ratios or upper limits are measured.