标题： 从重夸克算符乘积展开中的部分子物理：I. 形式化和威尔逊系数 显示英文标题

标题： Parton Physics from a Heavy-Quark Operator Product Expansion: I. Formalism and Wilson Coefficients

摘要： 部分子分布函数（PDFs）和轻锥分布幅度（LCDAs）分别是高能非弹性与弹性散射中的核心非微扰对象。因此，对这些对象进行从头计算是非常理想的。在本文中，我们介绍了使用重夸克算符乘积展开方法计算PDF和LCDA矩所需的理论细节。本文还提供了无极化PDF、自旋态PDF和介子LCDA的相关威尔逊系数结果，这些是该方法中的关键组成部分。此外，我们讨论了利用我们的方法通过这些量与相关强子振幅之间的匹配条件来确定部分子动量分数$\xi$在PDF和LCDA中的依赖关系。 显示英文摘要

摘要： Parton distribution functions (PDFs) and light-cone distribution amplitudes (LCDAs) are central non-perturbative objects of interest in high-energy inelastic and elastic scattering, respectively. As a result, an ab-initio determination of these objects is highly desirable. In this paper we present theoretical details required for the calculation of the moments of the PDF and LCDA using a heavy-quark operator product expansion method. This article also provides results of the relevant Wilson coefficients for the unpolarized PDF, helicity PDF and meson LCDA which are an essential ingredient in this approach. In addition, we discuss the use of our method to determine the dependence on the parton momentum fraction $\xi$ in the PDFs and LCDAs through a matching condition between these quantities and the relevant hadronic amplitudes.