Factorization and resummation of QED radiative corrections for neutron beta decay
High Energy Physics - Phenomenology
2025-08-11 v1 High Energy Physics - Experiment
Nuclear Theory
Abstract
Details of the two-loop analysis of long-distance QED radiative corrections to neutron beta decay are presented. Explicit expressions are given for hard, jet, and soft functions appearing in the factorization formula that describes the small mass/large energy limit. Power corrections, cancellation of singularities in the small mass expansion, renormalization scheme dependence, and bound state effects are discussed. The results impact the determination of from the measured neutron lifetime.
Keywords
Cite
@article{arxiv.2508.05741,
title = {Factorization and resummation of QED radiative corrections for neutron beta decay},
author = {Zehua Cao and Richard J. Hill and Ryan Plestid and Peter Vander Griend},
journal= {arXiv preprint arXiv:2508.05741},
year = {2025}
}