Coherent deeply virtual Compton scattering on helium-4 beyond leading power
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arXiv
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| Main Authors: | , , , |
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| Format: | Preprint |
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2026
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| _version_ | 1866909053773414400 |
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| author | Martínez-Fernández, Víctor Pire, B. Sznajder, P. Wagner, J. |
| author_facet | Martínez-Fernández, Víctor Pire, B. Sznajder, P. Wagner, J. |
| contents | 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 $α_s$. 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. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2604_25677 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Coherent deeply virtual Compton scattering on helium-4 beyond leading power Martínez-Fernández, Víctor Pire, B. Sznajder, P. Wagner, J. High Energy Physics - Phenomenology High Energy Physics - Experiment Nuclear Experiment Nuclear Theory 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 $α_s$. 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. |
| title | Coherent deeply virtual Compton scattering on helium-4 beyond leading power |
| topic | High Energy Physics - Phenomenology High Energy Physics - Experiment Nuclear Experiment Nuclear Theory |
| url | https://arxiv.org/abs/2604.25677 |