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arXiv 1111.3258hep-ph
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根据QCD求和规则的$B^{\ast}_{s1}B^{\ast}K$形状因子

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

Chun-Yu Cui, Yong-Lu Liu, Ming-Qiu Huang

摘要:

本文在三点QCD求和规则的框架下计算了$g_{B^{\ast}_{s1}B^{\ast} K}$顶点的形状因子和耦合常数。通过将$B^{\ast}$和$K$介子看作离壳层态,计算了与顶点有关的三点关联函数。如果$B^{\ast}$或$K$介子离壳层,但给出相同的耦合常数,则得到的形状因子不同。

英文摘要:

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.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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