InclusiveJψ's ine+e−annihilations

Within the framework of perturbative quantum chromodynamics we calculate the cross section as well as energy and angular distributions for inclusive $\frac{J}{\psi }$ production in $e^{+}{e}^{-}$ annihilations. The correct color-singlet assignment of the $\frac{J}{\psi }$ is taken into account. Our results are compared with the predictions of the "color-evaporation model."