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arXiv 1503.00541hep-ph
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解析摄动理论中如何进行DIS的QCD分析

How to perform QCD analysis of DIS in Analytic Perturbation Theory

Cesar Ayala, S. V. Mikhailov

摘要:

本文应用(分数阶)解析微扰理论(FAPT)对深非弹性散射中的非单重态核子结构函数$F_2(x,Q^2)$进行了QCD分析,得到了下一个首阶的结果,并与标准微扰QCD的结果进行了比较。基于一个流行的参数化相应的部分子分布,我们进行分析内的Jacobi多项式形式主义和控制下的数值逆梅林变换。为了揭示FAPT双回路方法的主要特征,我们考虑了从高$Q^2\sim 100 {\rm GeV}^2$到低$Q^2\sim 0.3 {\rm GeV}^2$的大范围动量传递,其中该方法仍然有效。

英文摘要:

We apply (Fractional) Analytic Perturbation Theory (FAPT) to the QCD analysis of the nonsinglet nucleon structure function $F_2(x,Q^2)$ in deep inelastic scattering up to the next leading order and compare the results with ones obtained within the standard perturbation QCD. Based on a popular parameterization of the corresponding parton distribution we perform the analysis within the Jacobi Polynomial formalism and under the control of the numerical inverse Mellin transform. To reveal the main features of the FAPT two-loop approach, we consider a wide range of momentum transfer from high $Q^2\sim 100 {\rm GeV}^2$ to low $Q^2\sim 0.3 {\rm GeV}^2$ where the approach still works.

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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