Observation of a New Excited $\hat{I}\pounds$ State in $\ddot{I}ˆ(3686)\to \bar{p}{K}^{+}\hat{I}{\pounds }^0+c.c.$

BESIII Collaboration, M. Ablikim, M. N. Achasov +681

Using a data sample of $(2712.4\pm 14.3)\times 10^6\ddot{I}ˆ(3686)$ events collected with the BESIII detector, a partial-wave analysis of $\ddot{I}ˆ(3686)\to \bar{p}{K}^{+}\hat{I}{\pounds }^0+c.c.$ is performed. A…