{"paper":{"title":"On the background in the $\\gamma p \\to \\omega(\\pi^0\\gamma) p$ reaction and mixed event simulation","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["nucl-ex"],"primary_cat":"nucl-th","authors_text":"E. Hernandez (Salamanca U.), E. Oset (Valencia U. & Valencia U., Ific), M. Kaskulov (Giessen U.)","submitted_at":"2010-03-11T17:11:07Z","abstract_excerpt":"In this paper we evaluate sources of background for the $\\gamma p \\to \\omega p$, with the $\\omega$ detected through its $\\pi^0 \\gamma$ decay channel, to compare with the experiment carried out at ELSA. We find background from $\\gamma p \\to \\pi^0 \\pi^0 p$ followed by decay of a $\\pi^0$ into two $\\gamma$, recombining one $\\pi^0$ and one $\\gamma$, and from the $\\gamma p \\to \\pi^0 \\eta p$ reaction with subsequent decay of the $\\eta$ into two photons. This background accounts for the data at $\\pi^0 \\gamma$ invariant masses beyond 700 MeV, but strength is missing at lower invariant masses which was "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1003.2363","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"}