QCD prediction for the non-$D\bar{D}$ annihilation decay of $\psi (3770)$

Zhi-Guo He, Ying Fan, Kuang-Ta Chao

To clarify the marked difference between BES and CLEO measurements on the non-$D\bar{D}$ decays of the $\psi (3770)$, a $1^3{D}_1$-dominated charmonium, we calculate the annihilation…