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arXiv · 2312.16966

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

Ajjath A H·Ekta Chaubey·Hua-Sheng Shao
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Abstract

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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Ajjath A H, Ekta Chaubey, Hua-Sheng Shao. 2024-03-21. Two-loop massive QCD and QED helicity amplitudes for light-by-light scattering. https://doi.org/10.1007/jhep03(2024)121

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