AI 中文总结
本文总结了DIS结构函数中NEik夸克背景贡献的NLO修正，发现纵向修正有限而横向修正存在快度和紫外发散，并提取了有限部分。
AI 中文摘要
我们总结了深度非弹性散射（DIS）结构函数中次领头阶（NLO）对次eikonal（NEik）夸克背景贡献的修正。在NEik精度下，除了来自靶标胶子背景场的修正外，DIS结构函数还接收由靶标夸克背景场插入所代表的t道夸克交换的贡献。后者在NEik精度下提供了α_s中的最低阶贡献。我们证明了纵向NEik结构函数的NLO修正是有限的，而横向NEik结构函数的修正则表现出快度发散和紫外（UV）发散。我们分析了这些发散并提取了有限贡献。
英文摘要
We summarize the next-to-leading order (NLO) corrections to next-to-eikonal (NEik) quark background contributions to DIS structure functions. At NEik accuracy, in addition to corrections arising from the gluon background field of the target, DIS structure functions receive contributions from the $t$-channel quark exchanges, represented by insertions of the quark background field of the target. The latter provide the lowest order contributions in $α_s$ at NEik accuracy. We show that the NLO corrections to the longitudinal NEik structure functions are finite, whereas those to the transverse NEik structure functions exhibit rapidity and ultraviolet (UV) divergences. We analyze these divergences and extract the finite contributions.
Comments7 pages, 2 figures. Proceedings of DIS2026 (33rd International Workshop on Deep Inelastic Scattering and Related Subjects), Bologna, Italy
