The strong vertices of charmed mesons $D$, $D^{\ast }$ and charmonia $J/\psi$, ${\eta }_c$

Jie Lu, Guo-Liang Yu, Zhi-Gang Wang

In this work, the strong coupling constants of the vertices $DDJ/\psi$, $D{D}^{\ast }J/\psi$, $D^{\ast }{D}^{\ast }J/\psi$, $D{D}^{\ast }{\eta }_c$ and $D^{\ast }{D}^{\ast }{\eta }_c$ are calculated within the framework of the QC…