{"paper":{"title":"Scalar sigma meson effects in rho and omega decays into pi0 pi0 gamma","license":"","headline":"","cross_cats":["hep-ex"],"primary_cat":"hep-ph","authors_text":"A. Bramon, J. L. Lucio M., M. Napsuciale, R. Escribano","submitted_at":"2001-05-17T16:14:32Z","abstract_excerpt":"The complementarity between Chiral Perturbation Theory and the Linear Sigma Model in the scalar channel is exploited to study $\\pi^0\\pi^0$ production in $\\rho$ and $\\omega$ radiative decays, where the effects of a low mass scalar resonance $\\sigma(500)$ should manifest. The recently reported data on $\\rho\\to\\pi^0\\pi^0\\gamma$ seem to require the contribution of a low mass and moderately narrow $\\sigma(500)$. The properties of this controversial state could be fixed by improving the accuracy of these measurements. Data on $\\omega\\to\\pi^0\\pi^0\\gamma$ can also be accommodated in our framework, but"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-ph/0105179","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/hep-ph/0105179/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"}