论文标题
零模式贡献在Twist-3 PDFS $ e（x）$和$ H_ {l}（x）$的匹配中的作用
The role of zero-mode contributions in the matching for the twist-3 PDFs $e(x)$ and $h_{L}(x)$
论文作者
论文摘要
提出了匹配的扰动过程，以将晶格QCD中可计算的Parton准分子分布连接到输入物理过程的相应的轻锥分布。到目前为止，这样的匹配过程仅限于Twist-2分布。最近，我们讨论了Twist-3 PDF $ G_T（X）$的匹配。在这项工作中，我们将扰动计算扩展到其余的Twist-3 PDF，$ e（x）$和$ h_ {l}（x）$。特别是，我们讨论了准-PDF的奇异零模式贡献计算所涉及的非客气性。
The perturbative procedure of matching was proposed to connect parton quasi-distributions that are calculable in lattice QCD to the corresponding light-cone distributions which enter physical processes. Such a matching procedure has so far been limited to the twist-2 distributions. Recently, we addressed the matching for the twist-3 PDF $g_T(x)$. In this work, we extend our perturbative calculations to the remaining twist-3 PDFs, $e(x)$ and $h_{L}(x)$. In particular, we discuss the non-trivialities involved in the calculation of the singular zero-mode contributions for the quasi-PDFs.
