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arXiv 1409.8148hep-phhep-exhep-latnucl-th
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关于QCD谱求和规则的一个小议

Mini-review on QCD spectral sum rules

Stephan Narison

摘要:

以最流行和最完善的Borel / Laplace / Exponential sum rule(LSR)为例,简要回顾了它在强子物理中的一些应用,即非微扰凝聚体的估计、轻夸克和重夸克质量的确定、重-轻衰变常数的提取、粲偶素和底偶素分子质量的估计以及标量胶子的性质。除了标准的τ(求和规则变量)和t_c(QCD连续阈值)稳定性判据外,本文还引入了一个新的对任意QCD减点μ的稳定性判据,用于在考虑辐射QCD修正的情况下提取最佳结果。对QCD谱求和规则(QSSR)的进一步应用作了进一步的改进。

英文摘要:

Taking the example of the most popular and well-established Borel / Laplace / Exponential sum rule (LSR), I shortly review some of its recent applications in hadron physics namely the estimates of non-perturbative condensates, the determination of the light and heavy quark masses, the extraction of the heavy-light decay constants, the estimates of charmonium and bottomium molecule masses and the properties of scalar gluonium. In addition to the standard τ(sum rule variable) and t_c (QCD continuum threshold) stablity criteria, I introduce a new stability criterion versus the arbitrary QCD subtraction point μfor extracting the optimal results when radiative QCD corrections are included. Future improvements on further uses of QCD spectral sum rules (QSSR) are commented.

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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