We compute all helicity amplitudes for the scattering of five partons in two-loop QCD in all the relevant flavor configurations, retaining all contributing color structures. We employ tensor projection to obtain helicity amplitudes in the ’t Hooft-Veltman scheme starting from a set of primitive amplitudes. Our analytic results are expressed in terms of massless pentagon functions, and are easy to evaluate numerically. These amplitudes provide important input to investigations of soft-collinear factorization and to studies of the high-energy limit.

中文翻译：

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QCD 中两个环路的五部分子散射

我们计算所有相关风味配置中二环 QCD 中五个部分子散射的所有螺旋幅度，保留所有贡献的颜色结构。我们采用张量投影从一组原始振幅开始获得 't Hooft-Veltman 方案中的螺旋度振幅。我们的分析结果以无质量五边形函数表示，并且很容易进行数值评估。这些振幅为软共线分解的研究和高能极限的研究提供了重要的输入。