Understanding the $e^{+}{e}^{-}\to D^{(\ast )+}{D}^{(\ast )-}$ processes observed by Belle

K. Y. Liu, Z. G. He, Y. J. Zhang +1

We calculate the production cross sections for $D^{\ast +}{D}^{\ast -}$, $D^{+}{D}^{\ast -}$ and $D^{+}{D}^{-}$ in $e^{+}{e}^{-}$ annihilation through one virtual photon in the framework of perturbative QCD wit…