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Coherent deeply virtual Compton scattering on He4 beyond leading power

V. Martínez-Fernández1,2, B. Pire3, P. Sznajder4, and J. Wagner4

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Phys. Rev. C 114, 035203 – Published 9 September, 2026

DOI: https://doi.org/10.1103/h7kn-ql7j

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 αs. 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.

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See Also

Quark and Gluon Tomography of the Helium-4 Nucleus

V. Martínez-Fernández, B. Pire, P. Sznajder, and J. Wagner
Phys. Rev. Lett. 137, 111905 (2026)

Article Text

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Outline

Information

Phys. Rev. C 114, 035203– Published 9 September, 2026
  • Received 19 May 2026
  • Accepted 28 July 2026
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Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Funded by SCOAP3.

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