First observations of $ψ(2S)$ and $χ_{cJ}(1P)$ decays to four-body final states $h^+h^- K^0_S K^0_S$

M. Ablikim

doi:10.1016/j.physletb.2005.09.050

paper

First observations of $ψ (2 S)$ and $χ_{c J} (1 P)$ decays to four-body final states $h^{+} h^{-} K_{S}^{0} K_{S}^{0}$

arXiv:hep-ex/0410028 · doi:10.1016/j.physletb.2005.09.050

Abstract

$χ_{c 0}$ , $χ_{c 1}$ , and $χ_{c 2}$ decays to $π^{+} π^{-} K_{S}^{0} K_{S}^{0}$ and $K^{+} K^{-} K_{S}^{0} K_{S}^{0}$ , as well as $ψ (2 S)$ decay to $π^{+} π^{-} K_{S}^{0} K_{S}^{0}$ are presented. The branching fractions of these decay channels are determined using $14 \times 1 0^{6}$ $ψ (2 S)$ events collected at BESII/BEPC. The branching fractions of $χ_{c 0}, χ_{c 2} \to K_{S}^{0} K_{S}^{0}$ are measured with improved statistical precision.

First observations of ψ(2S) and χcJ​(1P) decays to four-body final states h+h−KS0​KS0​

Abstract

First observations of $ψ (2 S)$ and $χ_{c J} (1 P)$ decays to four-body final states $h^{+} h^{-} K_{S}^{0} K_{S}^{0}$