论文标题
在全局QCD分析中，非驱动强体结构的测试动量依赖性
Testing momentum dependence of the nonperturbative hadron structure in a global QCD analysis
论文作者
论文摘要
我们讨论了Parton分布函数（PDFS）的非扰动QCD预测的策略，并在大型党派动量分数$ x $的区域中进行高能量实验。 PDF的分析函数形式不能仅基于离散的实验测量来唯一确定，因为PDF参数化的数学特性，我们使用基于Bézier曲线的表示来证明，这些函数的数学特性。相对于PDF的$ X $依赖性的非扰动QCD方法的预测应以一种形式进行，以便可以与实验测量进行决定性比较。 PDF的$（1-X）$依赖性的有效电力法的预测可能会扮演此角色。将基于夸克计数规则的质子中PDF的期望与CT18近代到领先的订单Parton分布满足的有效功率法相比，将基于夸克计数规则的质量比较。我们评论对PION中PDF的研究的影响，尤其是对非扰动方法与现象学PDF的比较。
We discuss strategies for comparisons of nonperturbative QCD predictions for parton distribution functions (PDFs) with high-energy experiments in the region of large partonic momentum fractions $x$. Analytic functional forms for PDFs cannot be uniquely determined solely based on discrete experimental measurements because of a mathematical property of mimicry of PDF parametrizations that we prove using a representation based on Bézier curves. Predictions of nonperturbative QCD approaches for the $x$ dependence of PDFs instead should be cast in a form that enables decisive comparisons against experimental measurements. Predictions for effective power laws of $(1-x)$ dependence of PDFs may play this role. Expectations for PDFs in a proton based on quark counting rules are compared against the effective power laws of $(1-x)$ dependence satisfied by CT18 next-to-next-to-leading order parton distributions. We comment on implications for studies of PDFs in a pion, in particular on the comparison of nonperturbative approaches with phenomenological PDFs.
