无质量4环传播算子的所有统一切割的主积分

Proceedings of 14th International Symposium on Radiative Corrections — PoS(RADCOR2019) Pub Date : 2019-12-19 DOI:10.22323/1.375.0049

V. Magerya, A. Pikelner

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摘要

在无质量4环传播子的一致性切割中，有两类直到最近才为人所知:2环3粒子切割和1环4粒子切割。在本文中，我们将讨论完成这些切割的主积分的计算:动机和方法(包括维度递归关系和更高时空维度的直接积分)。

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Master integrals for all unitarity cuts of massless 4-loop propagators

Among the unitarity cuts of massless 4-loop propagators two classes have remained unknown until recently: 2-loop 3-particle cuts, and 1-loop 4-particle cuts. In this article we shall discuss the calculation that completes the master integrals for these cuts: both the motivation and the methods (including dimensional recurrence relations and direct integration at higher space-time dimensions).

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Proceedings of 14th International Symposium on Radiative Corrections — PoS(RADCOR2019)

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