{"paper":{"title":"Exclusive $J/\\psi$, $\\psi(2s)$, and $e^{+}e^{-}$ pair production in Au$+$Au ultra-peripheral collisions at RHIC","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","headline":"","cross_cats":["hep-ex","hep-ph","nucl-th"],"primary_cat":"nucl-ex","authors_text":"STAR Collaboration","submitted_at":"2023-11-22T19:00:00Z","abstract_excerpt":"Measurements of exclusive $J/\\psi$, $\\psi(2s)$, and electron-positron ($e^{+}e^{-}$) pair photoproduction in Au$+$Au ultra-peripheral collisions are reported by the STAR experiment at $\\sqrt{s_{_\\mathrm{NN}}}=200~\\rm{GeV}$. We report several first measurements at the Relativistic Heavy-Ion Collider, which are i) $J/\\psi$ photoproduction with large momentum transfer up to $2.2~\\rm{(GeV/c)^{2}}$, ii) coherent $J/\\psi$ photoproduction associated with neutron emissions from nuclear breakup, iii) the rapidity dependence of incoherent $J/\\psi$ photoproduction, iv) the $\\psi(2s)$ photoproduction cros"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2311.13632","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/2311.13632/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"}