1204.3979 (Chun-Yu Cui et al.)

$B^{\ast}B^{\ast}ρ$ vertex from QCD sum rules    [PDF]

Chun-Yu Cui, Yong-Lu Liu, Ming-Qiu Huang

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.

View original: http://arxiv.org/abs/1204.3979