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arXiv 1204.3979hep-phhep-ex
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从QCD求和规则得到$B^{\ast}B^{\ast}ρ$顶点

$B^{\ast}B^{\ast}ρ$ vertex from QCD sum rules

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

摘要:

在三点QCD求和规则的框架下计算了$B^{\ast}B^{\ast}ρ$顶点的形状因子和耦合常数。考虑到$B^{\ast}$和$ρ$介子作为离壳态的贡献,负责的形状因子的关联函数进行评估。计算得到的耦合常数与光锥QCD求和规则计算结果一致。

英文摘要:

The form factors and the coupling constants in the $B^{\ast}B^{\ast}ρ$ 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 $B^{\ast}$ 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.

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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