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Two-loop massive QCD and QED helicity amplitudes for light-by-light scattering

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arxiv 2312.16966 v2 pith:K3EPHIKF submitted 2023-12-28 hep-ph hep-exhep-th

Ajjath A H , Ekta Chaubey , Hua-Sheng Shao This is my paper · ORCID
classification hep-phhep-exhep-th
keywords amplitudesscatteringanalytichelicityintegralslight-by-lightmassiveterms
verification ladder T0 review T1 audit T2 compute T3 formal
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We present the analytic and compact two-loop helicity amplitudes for QCD and QED corrections to the light-by-light scattering process with massive internal fermions. We express the master integrals either in terms of multiple polylogarithms or in terms of iterated integrals with dlog one-forms. We also elaborate on optimizing the analytic results for each phase-space region. This makes the numerical evaluation of the scattering amplitudes fast, stable and suitable for phenomenological applications.

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Cited by 1 Pith paper

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  1. Progress in NLO Calculations for gamma-gamma Physics

    hep-ph 2025-08 conditional novelty 3.0 of 10

    The gamma-UPC+MG5_aMC framework is presented as the first automated NLO tool for photon-photon processes in UPCs, reviewed alongside recent fixed-order NLO results and data comparisons.

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