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arXiv 1105.4628hep-phnucl-th
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O(α_s^2)Dijet软函数的非整体结构

Non-global Structure of the O(α_s^2) Dijet Soft Function

Andrew Hornig, Christopher Lee, Iain W. Stewart, Jonathan R. Walsh, Saba Zuberi

摘要:

涉及射流的高能散射过程一般涉及类光威尔逊线的矩阵元,称为软函数。这些描述了结构的软贡献的观测和编码的颜色和喷流之间的运动学相关性。我们计算了作为两个喷流不变质量的函数的双喷流软函数O(α_s^2),重点是不由其重整化群演化确定的项,这些项对这些质量具有不可分离的依赖性。我们的结果包括非全球的单,双双矩阵,以及分析结果的全套非对数的贡献。利用最近关于推力常数的一个结果,我们给出了位置和动量空间中双喷流产生的完全O(α_s^2)软函数。

英文摘要:

High energy scattering processes involving jets generically involve matrix elements of light- like Wilson lines, known as soft functions. These describe the structure of soft contributions to observables and encode color and kinematic correlations between jets. We compute the dijet soft function to O(α_s^2) as a function of the two jet invariant masses, focusing on terms not determined by its renormalization group evolution that have a non-separable dependence on these masses. Our results include non-global single and double logarithms, and analytic results for the full set of non-logarithmic contributions as well. Using a recent result for the thrust constant, we present the complete O(α_s^2) soft function for dijet production in both position and momentum space.

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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