A comparative analysis for the form factors and coupling constant of the $D_s DK^*$ meson vertex

Abstract

In this proceeding, we made an critical comparison between our method used in the calculation of form factor and coupling constant using the QCD Sum rules method and other one method using also QCDSR (Eur.Phys.J.C 78 (2018) 7, 606). The vertex that we are comparing is the * , that is important to compute cross section of the process → * within effective theories.