Symmetry Constraints on Pion Valence Structure
High Energy Physics - Phenomenology
2025-10-29 v1 High Energy Physics - Experiment
High Energy Physics - Lattice
Nuclear Experiment
Nuclear Theory
Abstract
The profile of the pion valence quark distribution function (DF) remains controversial. Working from the concepts of QCD effective charges and generalised parton distributions, we show that since the pion elastic electromagnetic form factor is well approximated by a monopole, then, at large light-front momentum fraction, the pion valence quark DF is a convex function described by a large- power law that is practically consistent with expectations based on quantum chromodynamics.
Cite
@article{arxiv.2510.23950,
title = {Symmetry Constraints on Pion Valence Structure},
author = {Xiaobin Wang and Lei Chang and Minghui Ding and Khepani Raya and Craig D. Roberts},
journal= {arXiv preprint arXiv:2510.23950},
year = {2025}
}
Comments
7 pages, 5 figures