Lepton-pair scattering with an off-shell and an on-shell photon at two loops in massless QED

DOI10.1007/JHEP11(2023)041arXiv2307.03098OpenAlexW4388537291MaRDI QIDQ6142613

Author name not available (Why is that?)

Publication date: 26 January 2024

Published in: (Search for Journal in Brave)

Abstract: We compute the two-loop QED helicity amplitudes for the scattering of a lepton pair with an off-shell and an on-shell photon, $$, using the approximation of massless leptons. We express all master integrals relevant for the scattering of four massless particles with a single external off-shell leg up to two loops in a basis of algebraically independent multiple polylogarithms, which guarantees an efficient numerical evaluation and compact analytic representations of the amplitudes. Analytic forms of the amplitudes are reconstructed from numerical evaluations over finite fields. Our results complete the amplitude-level ingredients contributing to the N${}^3$LO predictions of electron-muon scattering $emuoemu$, which are required to meet the precision goal of the future MUonE experiment.

Full work available at URL: https://arxiv.org/abs/2307.03098

zbMATH Keywords

No records found.

Mathematics Subject Classification ID

No records found.

This page was built for publication: Lepton-pair scattering with an off-shell and an on-shell photon at two loops in massless QED

Report a bug (only for logged in users!)Click here to report a bug for this page (MaRDI item Q6142613)