{"paper":{"title":"Small-$x$ gluon GPD constrained from deeply virtual $J/\\psi$ production and gluon PDF through universal-moment parameterization","license":"http://creativecommons.org/publicdomain/zero/1.0/","headline":"","cross_cats":["nucl-th"],"primary_cat":"hep-ph","authors_text":"Hao-Cheng Zhang, Jinghong Yang, M. Gabriel Santiago, Xiangdong Ji, Yuxun Guo","submitted_at":"2024-09-25T18:00:01Z","abstract_excerpt":"We phenomenologically constrain the small-$x$ and small-$\\xi$ gluon generalized parton distributions (GPDs) with the deeply virtual $J/\\psi$ production (DV$J/\\psi$P) in the framework of GPDs through universal moment parameterization (GUMP). We use a hybrid cross-section formula combining collinear factorization to the next-to-leading order (NLO) accuracy of the strong coupling $\\alpha_s$, with corrections from non-relativistic QCD to account for the power corrections due to the heavy $J/\\psi$ mass. We reach reasonable fit to the measured differential cross-sections of DV$J/\\psi$P by H1 at Hadr"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2409.17231","kind":"arxiv","version":3},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2409.17231/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}