{"paper":{"title":"Eta photoproduction off the neutron at GRAAL","license":"","headline":"","cross_cats":[],"primary_cat":"hep-ex","authors_text":"A.D'Angelo, A.Fantini, A.Giusa, A.Lapik, A.Turinge, B.Girolami, C.Randieri, C.Schaerf, D.Franco, D.Moricciani, E.Hourany, F.Ghio, G.Gervino, G.Russo, J.-P.Didelez, L.Nicoletti, M.Castoldi, M.-C.Sutera, M.Guidal, M.-L.Sperduto, N.Rudnev, O.Bartalini, P.Levi Sandri, R.Di Salvo, R.Kunne, V.Bellini, V.Kuznetsov","submitted_at":"2005-12-31T08:01:20Z","abstract_excerpt":"The gamma n -> eta n quasi-free cross section reveals a resonant structure at W ~ 1.675 GeV. This structure may be a manifestation of a baryon resonance. A priori its properties, the possibly narrow width and the strong photocoupling to the neutron, look surprising. This structure may also signal the existence of a narrow state."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-ex/0601002","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"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"}