Master integrals for e⁺e^-→2γ process at large energies and angles

2024/10/04 by Roman N. Lee, Lee, Roman N., Vyacheslav A. Stotsky +1 · 2 citations
Mathematics · Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #Mathematical Approximation and Integration #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions

paper · pdf · doi:10.48550/arxiv.2410.03336

openalex publication_date 2024/10/04 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We calculate two-loop massive master integrals for e⁺e^-→2γ 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 ε-form, and DRA method.

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