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arXiv 1409.6449hep-ph
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用光锥QCD求和规则计算$B-S$跃迁形状因子

$B-S$ transition form-factors with the light-cone QCD sum rules

Zhi-Gang Wang

摘要:

在本文中,我们假设能量在1 GeV以下和1 GeV以上的两个标量九介子都是$\bar{q}q$态,在情形I中,能量在1 GeV以下的标量介子是基态,在情形II中,能量在1 GeV以上的标量介子是基态.我们利用光锥QCD求和规则计算了${\mathcal{O}}(α_s)$的形状因子,并将其数值拟合到具有许多唯象应用的单极形式中.

英文摘要:

In the article, we assume the two scalar nonet mesons below and above 1 GeV are all $\bar{q}q$ states, in case I, the scalar mesons below 1 GeV are the ground states, in case II, the scalar mesons above 1 GeV are the ground states. We calculate the $B-S$ form-factors by taking into account the perturbative ${\mathcal{O}}(α_s)$ corrections to the twist-2 terms using the light-cone QCD sum rules and fit the numerical values of the form-factors into the single-pole forms, which have many phenomenological applications.

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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