Revisiting the production of $J/\psi +{\eta }_c$ via the $e^{+}{e}^{-}$ annihilation within the QCD light-cone sum rules

Long Zeng, Hai-Bing Fu, Dan-Dan Hu +3

We make a detailed study on the typical production channel of double charmoniums, $e^{+}{e}^{-}\to J/\psi +{\eta }_c$, at the center-of-mass collision energy $\sqrt{s}=10.58$ GeV. The key componen…