$J/\psi$ electromagnetic production associated with light hadrons at $B$ factories

Yu-Jie Zhang, Bai-Qing Li, Kui-Yong Liu

The electromagnetic productions of $J\psi$ associated with light hadrons(LH) and leptonic pairs(${\mu }^{+}{\mu }^{-}$, ${\tau }^{+}{\tau }^{-}$) at $B$ factories are studied. We find that the direct electromagne…