Production of Prompt Charmonia in $e^{+}{e}^{-}$ Annihilation at $\sqrt{s}\approx 10.6$ GeV

K. Abe

The production of prompt $J/\psi$, $\psi (2S)$, ${\chi }_{c1}$ and ${\chi }_{c2}$ is studied using a $32.4f{b}^{-1}$ data sample collected with the Belle detector at the ${\rm Y}(4S)$ and 60 MeV below the r…