The $J/\psi D{D}^{\ast }$ vertex

R. Rodrigues da Silva, R. D. Matheus, F. S. Navarra +1

We employ QCD sum rules to calculate the $J/\psi D{D}^{\ast }$ form factors and coupling constant by studying the three-point $J/\psi D^{\ast }D$ correlation function. We find that the momentum dependen…