Disperon QED
High Energy Physics - Phenomenology
2026-04-22 v3 High Energy Physics - Experiment
Nuclear Theory
Abstract
We present disperon QED, a method to deal with data input in loop processes in Monte Carlo codes. It relies on dispersion relations, automated tools such as OpenLoops, effective field theory methods and a threshold subtraction. We motivate this method and apply it to the process in McMule to deal with hadronic vacuum polarisation insertions in two-loop contributions as well as the vector form factor of the pion within the form-factor scalar QED approximation. The generality of this method for more complicated processes is emphasised.
Cite
@article{arxiv.2512.10709,
title = {Disperon QED},
author = {Yizhou Fang and Sophie Kollatzsch and Marco Rocco and Adrian Signer and Yannick Ulrich and Max Zoller},
journal= {arXiv preprint arXiv:2512.10709},
year = {2026}
}
Comments
34 pages, 8 figures, published version