Locally finite two-loop amplitudes for off-shell multi-photon production in electron-positron annihilation

Locally finite two-loop amplitudes for off-shell multi-photon production in electron-positron annihilation

Abstract We study the singularity structure of two-loop QED amplitudes for the production of multiple off-shell photons in massless electron-positron annihilation and develop counterterms that remove their infrared and ultraviolet divergences point by point in the loop integrand. The remainders of t...

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Bibliographic Details
Main Authors: Charalampos Anastasiou, Rayan Haindl, George Sterman, Zhou Yang, Mao Zeng
Format: Article
Language:English
Published: SpringerOpen 2021-04-01
Series:Journal of High Energy Physics
Subjects:
Perturbative QCD
Scattering Amplitudes
Online Access:https://doi.org/10.1007/JHEP04(2021)222

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