Associated charmonium-bottomonium production in a single boson $e^{+}{e}^{-}$ annihilation

Abstract

The production cross sections of $J/\psi {\eta }_b$, ${\rm Y}{\eta }_c$ pairs in a single boson $e^{+}{e}^{-}$ annihilation have been studied in a wide range of energies, which will be achieved at future $e^{+}{e}^{-}$ colliders. The main color singlet contributions to the production processes are taken into account, including the one loop QCD contribution.

Comments: Several plots are changed. The bibliography info: see the correct references in the arXiv version