The Excited Charmonium Production in $e^{+}{e}^{-}$ Annihilation

Han-Jie Tao, Yan-Jun Sun, Song-Pei Guo +2

We calculate the form factor and cross section of the excited charmonium production process $e^{+}+e^{-}\to \psi \left(2S\right)+{\eta }_c$ by light-cone sum rules. In our meth…