论文标题
在小x处的横向动量依赖分布的规格不变性上
On gauge invariance of transverse momentum dependent distributions at small x
论文作者
论文摘要
近年来，已经对中等X的QCD振幅的小X极限与QCD分解之间的相互作用进行了广泛的研究。最终表明，小X物理学的半经典制剂可以具有无限扭曲框架的形式，该框架涉及eikonal极限的横向动量依赖性（TMD）分布。在这项工作中，我们证明可以根据横向尺度链接来制定小X分布。这尤其允许可观察到的直接有效分解为涉及跨越parton分布的规格不变子操作员的亚繁殖。
The interplay between the small x limit of QCD amplitudes and QCD factorization at moderate x has been studied extensively in recent years. It was finally shown that semiclassical formulations of small x physics can have the form of an infinite twist framework involving Transverse Momentum Dependent (TMD) distributions in the eikonal limit. In this work, we demonstrate that small x distributions can be formulated in terms of transverse gauge links. This allows in particular for direct and efficient decompositions of observables into subamplitudes involving gauge invariant sub-operators which span parton distributions.
