FCNC-induced semileptonic decays of $J/\psi$ in the Standard Model

Yu-Ming Wang, Hao Zou, Zheng-Tao Wei +2

In this work, we calculate the form factors for $J/\psi \to {\bar{D}}^{(\ast )0}$ induced by the flavor changing neutral currents (FCNC) in terms of the QCD sum rules. Making use of these fo…