Low-energy $e^+\,e^-\to\gamma\,\gamma$ at NNLO in QED
High Energy Physics - Phenomenology
2026-02-20 v2 High Energy Physics - Experiment
Abstract
We present a fully differential computation of at next-to-next-to-leading order in QED. The process has been implemented into McMule, completing its set of next-to-next-to-leading-order calculations for the most important processes. The results allow for generic applications to electron-positron colliders with centre-of-mass energies up to a few GeV, particularly for luminosity measurements.
Cite
@article{arxiv.2512.22929,
title = {Low-energy $e^+\,e^-\to\gamma\,\gamma$ at NNLO in QED},
author = {Tim Engel and Marco Rocco and Adrian Signer and Yannick Ulrich},
journal= {arXiv preprint arXiv:2512.22929},
year = {2026}
}
Comments
10 pages, 4 figures; accepted by PLB