$B^{\ast}_{s1}B^{\ast}K$ form factor from QCD sum rules

Details $B^{\ast}_{s1}B^{\ast}K$ form factor from QCD sum rules $B^{\ast}_{s1}B^{\ast}K$ form factor from QCD sum rules

2011-11-14

arxiv.org/abs/1111.3258v3

Phys.Lett.B707:129-136,2012

Physics

High Energy Physics

High Energy Physics - Phenomenology

12 pages, 6 figures. arXiv admin note: text overlap with arXiv:1009.5320 by other authors

Scientific paper

10.1016/j.physletb.2011.12.022

In this article, we calculate the form factors and the coupling constant of the $g_{B^{\ast}_{s1}B^{\ast} K}$ vertex in the framework of the three-point QCD sum rules. Three point correlation functions responsible for the vertex are evaluated by considering both $B^{\ast}$ and $K$ mesons as off-shell states. The form factors obtained are different if the $B^{\ast}$ or the $K$ meson is off-shell but give the same coupling constant.

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