Search for the isospin-violating decays $\ddot{\mathbf{I}}{‡}_{\mathbf{cJ}}\to \hat{\mathbf{I}}›\overline{\hat{\mathbf{I}}}{\pounds }^0+\mathbf{c}.\mathbf{c}.$ and $\hat{\mathbf{I}}{\cdot }_{\mathbf{c}}\to \hat{\mathbf{I}}›\overline{\hat{\mathbf{I}}}{\pounds }^0+\mathbf{c}.\mathbf{c}.$

BESIII Collaboration, M. Ablikim, M. N. Achasov +701

Using a sample of $(2712.4\pm 14.3)\times 10^6$~$\ddot{I}ˆ(3686)$ events collected with the BESIII detector, we perform a search for the isospin-violating decays $χ_{cJ}\toΛ\barΣ^{0}+c…