{"paper":{"title":"Exclusive $\\eta$ production in proton-proton collisions at energies available at the GSI Facility for Antiproton and Ion Research","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["hep-ex"],"primary_cat":"hep-ph","authors_text":"Piotr Lebiedowicz","submitted_at":"2025-01-24T22:39:14Z","abstract_excerpt":"The cross sections for the $p p \\to p p \\eta$ reaction are evaluated at energies relevant for the HADES, PANDA, and SIS100 experiments at GSI-FAIR. Consideration includes the $\\eta$-bremsstrahlung mechanism involving intermediate proton exchange via the $\\pi^{0}$, $\\eta$, $\\rho^{0}$, and $\\omega$ exchanges and the mechanism involving the nucleon resonances $N(1535)$, $N(1650)$, $N(1710)$, and $N(1880)$ excited via the pseudoscalar- and/or vector-meson exchanges, depending on the model. The role of the $\\omega \\omega$- and $\\rho^{0} \\rho^{0}$-fusion processes with the reggeized vector-meson exc"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2501.14952","kind":"arxiv","version":2},"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/2501.14952/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"}