Work

Coherent deeply virtual Compton scattering on helium-4 beyond the leading twist approximation

Year: 2026

Type: preprint

Abstract: Coherent hard exclusive reactions on light nuclei offer access to their quark and gluon structure and provide a framework for three-dimensional nuclear tomography. We analyze deeply virtual Compton scattering on a helium-4 target, including leading-twist contributions as well as kinematical twist-3 and twist-4 effects. We present numerical estimates of cross sections and asymmetries for kinematic regimes relevant to JLab experiments. We emphasize the importance of next to leading order (NLO) and kinematical twist 3 and 4 contributions to interpret data in the JLab kinematics. We deduce a first tomographic image of quarks and gluons in the helium-4 nucleus.

Source: arXiv (Cornell University)

DOI: 10.48550/arxiv.2609.22405

Authors: Martínez-Fernández, V., Pire, B., Sznajder, P., Wagner, J.

Language: English

Topic: Quantum Chromodynamics and Particle Interactions

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funders: Agence Nationale de la Recherche, Narodowym Centrum Nauki

Awards: Computerised Tomography of Nucleons, G7080048889

OpenAlex ID: W7214010478

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