Measurement of ${\chi }_{cJ}$ decaying into ${\eta }^{\prime }{K}^{+}{K}^{-}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +376

Using $(106.41\pm 0.86)\times 10^6$ $\psi (3686)$ events collected with the BESIII detector at BEPCII, we study for the first time the decay ${\chi }_{cJ}\to {\eta }^{\prime }{K}^{+}{K}^{-}$, where ${\eta }^{\prime }\to \gamma {\rho }^0$…