Amplitude Analysis of the Isospin-Violating Decay $J/\ddot{I}ˆ\to {\hat{I}}^3\hat{I}\cdot \ddot{I}{€}^0$

BESIII Collaboration, M. Ablikim, M. N. Achasov +759

Using $(10087\pm 44)\times 10^6$ $J/\ddot{I}ˆ$ events collected with the BESIII detector, we perform the first amplitude analysis of the process $J/\ddot{I}ˆ\to {\hat{I}}^3\hat{I}\cdot \ddot{I}{€}^0$. The decay is domina…