Coherent deeply virtual Compton scattering on helium-4 beyond leading power
High Energy Physics - Phenomenology
2026-05-19 v2 High Energy Physics - Experiment
Nuclear Experiment
Nuclear Theory
Abstract
Coherent hard exclusive reactions on light nuclei provide access to their quark and gluon structure and enable three-dimensional tomography of these complex systems. We study deeply virtual Compton scattering on a helium-4 target, including both kinematic twist-3 and twist-4 corrections, as well as next-to-leading-order corrections to the twist-2 amplitude in the strong coupling . We show that these contributions are crucial for achieving a precise description of the data and, as a result, obtain the first tomographic image of the helium-4 nucleus at the quark-gluon level.
Cite
@article{arxiv.2604.25677,
title = {Coherent deeply virtual Compton scattering on helium-4 beyond leading power},
author = {Víctor Martínez-Fernández and B. Pire and P. Sznajder and J. Wagner},
journal= {arXiv preprint arXiv:2604.25677},
year = {2026}
}