标题： 从深度非弹性散射到pA碰撞的高能QCD因子化 显示英文标题

标题： High-Energy QCD factorization from DIS to pA collisions

摘要： 高能QCD因子化在深度非弹性散射和质子-核碰撞中的讨论，使用威尔逊线形式和快速度因子化。 我们表明，在DIS中，当应用两胶子近似时，快速度因子化会退化为$k_{\rm T}$-因子化，前提是高能算符乘积展开中使用了复合威尔逊线算符。 然后我们表明，在质子-核碰撞中，单环水平的前向截面因子化为部分子分布函数、碎裂函数和二极胶子分布函数。 显示英文摘要

摘要： The high-energy QCD factorization for Deep Inelastic Scattering and for proton-nucleus collisions using Wilson line formalism and factorization in rapidity is discussed. We show that in DIS the factorization in rapidity reduces to the $k_{\rm T}$-factorization when the 2-gluon approximation is applied, provided that the composite Wilson line operator is used in the high-energy Operator Product Expansion. We then show that the inclusive forward cross-section in proton-nucleus collisions factorizes in parton distribution functions, fragmentation functions and dipole gluon distribution function at one-loop level.