$B^{\ast}B^{\ast}\rho$ vertex from QCD sum rules
  The form factors and the coupling constants in the $B^{\ast}B^{\ast}\rho$ vertex are evaluated in the framework of three-point QCD sum rules. The correlation functions responsible for the form factors are evaluated considering contributions of both $B^{\ast}$ and $\rho$ mesons as off-shell states. The obtained numerical results for the coupling constants are in agreement with light-cone QCD sum rules calculations. 
Chun-Yu Cui, Yong-Lu Liu and Ming-Qiu Huang
hep-ph hep-ex