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arXiv · 2410.03336

Master integrals for $e^{+}e^{-}\rightarrow2\gamma$ process at large energies and angles

Roman N. Lee·Vyacheslav A. Stotsky
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Abstract

We calculate two-loop massive master integrals for $e^{+}e^{-}\rightarrow2\gamma$ in terms of generalized power series with respect to electron mass. The coefficients of this series are expressed via Goncharov's polylogarithms. Our approach exploits a number of modern multiloop methods: IBP reduction, differential equations for master integrals, Frobenius method, reduction to $\epsilon$-form, and DRA method.

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Roman N. Lee, Vyacheslav A. Stotsky. 2024-10-04. Master integrals for $e^{+}e^{-}\rightarrow2\gamma$ process at large energies and angles. https://arxiv.org/abs/2410.03336

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