Evidence of doubly OZI-suppressed decay ${\eta }_c\to \omega \varphi$ in the radiative decay $J/\psi \to \gamma {\eta }_c$

BESIII Collaboration, M. Ablikim, M. N. Achasov +678

Using a sample of $(10087\pm 44)\times 10^6$ $J/\psi$ events collected with the BESIII detector at the BEPCII collider, the first evidence for the doubly OZI-suppressed decay $η_{c}…