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Some Exact Results for Two-Loop Diagrams with Three and Four External Lines

N. I. Ussyukina·A. I. Davydychev
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Abstract

Evaluation of three- and four-point diagrams with massless internal particles and arbitrary external momenta is considered. Exact results for some two-loop diagrams (planar and non-planar three-point contributions and the "double box" diagram) are obtained in terms of polylogarithms.

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N. I. Ussyukina, A. I. Davydychev. 1993-07-23. Some Exact Results for Two-Loop Diagrams with Three and Four External Lines. https://arxiv.org/abs/hep-ph/9307327

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