Observation of $\chi_{cJ}\to p \bar p K^0_S K^- \pi^+ + c.c.$
Observation of $\chi_{cJ}\to p \bar p K^0_S K^- \pi^+ + c.c.$
By analyzing $(27.12\pm0.14)\times10^8$ $\psi(3686)$ events collected with the BESIII detector operating at the BEPCII collider, the decays of $\chi_{cJ} \to p \bar{p} K^0_S K^- \pi^+ +c.c.(J=0, 1, 2)$ are observed for the first time with statistical significances greater than $10\sigma$. The branching fractions of these decays are determined to be …