$B^{\ast}B^{\ast}Ï$ vertex from QCD sum rules
arXiv:1204.3979 · doi:10.1016/j.physletb.2012.04.015
Abstract
The form factors and the coupling constants in the $B^{\ast}B^{\ast}Ï$ 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 $Ï$ mesons as off-shell states. The obtained numerical results for the coupling constants are in agreement with light-cone QCD sum rules calculations.
18 pages, 11 figures, to appear on Phys. Lett. B