Observation of $\ddot{I}{‡}_{cJ}(J=0,1,2)\to p\bar{p}\hat{I}\cdot \hat{I}\cdot$

BESIII Collaboration, M. Ablikim, M. N. Achasov +677

Using $(2712.4\pm 14.3)\times 10^6$ $\ddot{I}ˆ(3686)$ events collected by the BESIII detector operating at the BEPCII storage ring, the decays $\ddot{I}{‡}_{cJ}(J=0,1,2)\to p\bar{p}\hat{I}\cdot \hat{I}\cdot$ are…