One-loop corrections to the processes $e^{+}{e}^{-}\to \gamma ,Z\to J/\psi {\eta }_c$ and $e^{+}{e}^{-}\to Z\to J/\psi J/\psi$

A. V. Berezhnoy, I. N. Belov, S. V. Poslavsky +1

The cross section values of $J/\psi {\eta }_c$ and $J/\psi J/\psi$ production in $e^{+}{e}^{-}$ annihilation are estimated within one-loop approximation near $Z$ pole, as well as at higher energies. Bo…