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The form factors and the coupling constants in the B⁎B⁎ρ 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⁎ and ρ mesons as off-shell states. The obtained numerical results for the coupling constants are in agreement with light-cone QCD sum rules calculations.
In this article, we calculate the form factors and the coupling constant of the gBs1⁎B⁎K vertex in the framework of the three-point QCD sum rules. Three point correlation functions responsible for the vertex are evaluated by considering both B⁎ and K mesons as off-shell states. The form factors obtained are different if the B⁎ or the K meson is off-shell but give the same coupling constant.
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