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arXiv 2008.07916hep-ph
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单圈全正螺旋度离壳规范不变多胶子振幅

All-plus helicity off-shell gauge invariant multigluon amplitudes at one loop

Etienne Blanco, Andreas van Hameren, Piotr Kotko, Krzysztof Kutak

摘要:

在准多Regge运动学中,我们计算了任意数目的正螺旋度壳层胶子和一个离壳层胶子的单圈散射振幅。结果是完全规范不变的,并具有正确的壳极限。我们的方法是基于嵌入的离壳过程,连同需要保持规范不变性的贡献,在一个更大的完全在壳过程与辅助夸克或胶子线。

英文摘要:

We calculate one loop scattering amplitudes for arbitrary number of positive helicity on-shell gluons and one off-shell gluon treated within the quasi-multi Regge kinematics. The result is fully gauge invariant and possesses the correct on-shell limit. Our method is based on embedding the off-shell process, together with contributions needed to retain gauge invariance, in a bigger fully on-shell process with auxiliary quark or gluon line.

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