DIS系数在QCD及以后的四个环上起作用

Proceedings of Loops and Legs in Quantum Field Theory — PoS(LL2022) Pub Date : 2022-08-23 DOI:10.22323/1.416.0047

S. Moch, B. Ruijl, Takahiro Ueda, J. Vermaseren, A. Vogt

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引用次数: 2

摘要

在强耦合常数α s的微扰展开中，我们报道了QCD中风味-非单重态结构函数f2和fl在四阶的最低偶N矩的结果。我们的结果以数值形式呈现，并将它们与N大值的阈值展开式的前导项和次导项进行比较，这对应于极限x→1。

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DIS coefficient functions at four loops in QCD and beyond

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 → 1.

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Proceedings of Loops and Legs in Quantum Field Theory — PoS(LL2022)

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