Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: $B^{\ast}_{s1}B^{\ast}K$ form factor from QCD sum rules   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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The categories of this paper are: patt-sol
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The categories of this paper are: nucl-ex
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The categories of this paper are: gr-qc
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The categories of this paper are: stat
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The categories of this paper are: hep-ex
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The categories of this paper are: econ
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The categories of this paper are: atom-ph
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The categories of this paper are: plasm-ph
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The categories of this paper are: ao-sci
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The categories of this paper are: math
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The categories of this paper are: solv-int
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The categories of this paper are: cs
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The categories of this paper are: adap-org
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The categories of this paper are: astro-ph
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The categories of this paper are: q-alg
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The categories of this paper are: q-bio