Observation of the decay ${\chi }_{cJ}\to {\Omega }^{-}{\bar{\Omega }}^{+}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +595

Using an $e^{+}{e}^{-}$ collision data sample of $(27.08\pm 0.14)\times 10^8$ $\psi (3686)$ events collected by the BESIII detector, we report the first observation of $χ_{cJ} \to Ω^- \b…