论文标题
QCD及以后四个循环的DIS系数功能
DIS coefficient functions at four loops in QCD and beyond
论文作者
论文摘要
我们报告了QCD的QCD $ f_2 $和$ f_l $的最低偶数均值矩的结果，该结果在第四阶的QCD中，在强耦合常数$α_s$中的扰动扩展中。我们的结果以数值形式呈现，我们将它们与$ n $的大值的阈值扩展的领先和转向式术语进行了比较，这对应于限制$ x \至1 $。
We report results for the lowest even-$N$ moments of the flavor-nonsinglet structure functions $F_2$ and $F_L$ in QCD at the fourth order in the perturbative expansion in the strong coupling constant $α_s$. Our results are presented in numerical form and we compare them with the leading and subleading terms of the threshold expansion for large values of $N$, which corresponds to the limit $x \to 1$.
