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arXiv · 1210.2789

$η_{b}BB^{\ast}$ vertex from QCD sum rules

Chun-Yu Cui·Yong-Lu Liu·Ming-Qiu Huang
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Abstract

The form factor and the coupling constant in the $η_{b}BB^{\ast}$ vertex are evaluated in the framework of three-point QCD sum rules. The correlation functions responsible for the vertex is evaluated considering contributions of both $B$ and $B^{\ast}$ mesons as off-shell states. The form factors obtained are different for the two cases, whereas the final results of the coupling constant are compatible.

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Chun-Yu Cui, Yong-Lu Liu, Ming-Qiu Huang. 2013-04-22. $η_{b}BB^{\ast}$ vertex from QCD sum rules. https://arxiv.org/abs/1210.2789

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