{"paper":{"title":"A first prediction of the electromagnetic rare decays $\\eta^\\prime\\to\\pi^0\\gamma\\gamma$ and $\\eta^\\prime\\to\\eta\\gamma\\gamma$","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ex","nucl-th"],"primary_cat":"hep-ph","authors_text":"Barcelona), IFAE, Rafel Escribano (UAB","submitted_at":"2012-07-23T14:14:13Z","abstract_excerpt":"The branching ratio of the electromagnetic rare decays $\\eta\\to\\pi^0\\gamma\\gamma$ and $\\eta^\\prime\\to (\\pi^0,\\eta)\\gamma\\gamma$ are analysed in terms of scalar and vector meson exchange contributions using the frameworks of the Linear Sigma Model and Vector Meson Dominance, respectively. The measured $\\eta\\to\\pi^0\\gamma\\gamma$ process serves as a test of our approach while the non yet measured $\\eta^\\prime\\to (\\pi^0,\\eta)\\gamma\\gamma$ reactions are predicted for the first time. Our prediction for the $\\eta\\to\\pi^0\\gamma\\gamma$ decay agrees with recent experimental reported values, thus support"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1207.5400","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"}