GUMP1.0 -- First global extraction of generalized parton distributions from experiment and lattice data with NLO accuracy
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arXiv
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| Format: | Preprint |
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2025
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| _version_ | 1866912579603922944 |
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| author | Guo, Yuxun Aslan, Fatma P. Ji, Xiangdong Santiago, M. Gabriel |
| author_facet | Guo, Yuxun Aslan, Fatma P. Ji, Xiangdong Santiago, M. Gabriel |
| contents | We report the first global extraction of generalized parton distributions (GPDs), GUMP1.0, by combining deeply virtual Compton scattering and $ρ$-meson production data from Jefferson Lab and Hadron-Electron Ring Accelerator with global fits of parton distribution functions, charge form factors, and lattice quantum chromodynamics simulations. Using a conformal moment space parametrization, we achieve a unified description across low- and high-$x$ regions at next to leading order (NLO) accuracy in perturbative corrections. The results provide state-of-the-art GPDs consistent with almost all known facts, enabling three-dimensional nucleon imaging in impact parameter space and, at the same time, establishing a benchmark for future theoretical and experimental studies of the nucleon structure. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2509_08037 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | GUMP1.0 -- First global extraction of generalized parton distributions from experiment and lattice data with NLO accuracy Guo, Yuxun Aslan, Fatma P. Ji, Xiangdong Santiago, M. Gabriel High Energy Physics - Phenomenology High Energy Physics - Lattice Nuclear Experiment Nuclear Theory We report the first global extraction of generalized parton distributions (GPDs), GUMP1.0, by combining deeply virtual Compton scattering and $ρ$-meson production data from Jefferson Lab and Hadron-Electron Ring Accelerator with global fits of parton distribution functions, charge form factors, and lattice quantum chromodynamics simulations. Using a conformal moment space parametrization, we achieve a unified description across low- and high-$x$ regions at next to leading order (NLO) accuracy in perturbative corrections. The results provide state-of-the-art GPDs consistent with almost all known facts, enabling three-dimensional nucleon imaging in impact parameter space and, at the same time, establishing a benchmark for future theoretical and experimental studies of the nucleon structure. |
| title | GUMP1.0 -- First global extraction of generalized parton distributions from experiment and lattice data with NLO accuracy |
| topic | High Energy Physics - Phenomenology High Energy Physics - Lattice Nuclear Experiment Nuclear Theory |
| url | https://arxiv.org/abs/2509.08037 |