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arXiv 2003.02288hep-phhep-th
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Collins-Soper核的自包含定义

Self-contained definition of the Collins-Soper kernel

Alexey A. Vladimirov

摘要:

快度反常维数(RAD),或柯林斯-索普核,定义了横向动量相关分布的标度性质,可以从实验数据中提取。我推导出一个独立的非微扰定义,表示RAD没有提到一个特定的过程。这一定义使得一方面可以用理论方法研究RAD的性质,另一方面可以用对撞机测量方法研究QCD真空的性质。为了证明这些可能性,我计算功率校正RAD,其大B渐近,并比较这些估计与最近的唯象提取。

英文摘要:

The rapidity anomalous dimension (RAD), or Collins-Soper kernel, defines the scaling properties of transverse momentum dependent distributions and can be extracted from the experimental data. I derive a self-contained nonperturbative definition that represents RAD without reference to a particular process. This definition makes possible exploration of the properties of RAD by theoretical methods on one side, and the properties of QCD vacuum with collider measurements on another side. To demonstrate these possibilities, I compute the power correction to RAD, its large-b asymptotic, and compare these estimations with recent phenomenological extractions.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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