{"paper":{"title":"Radiative VPgamma transitions and eta-eta' mixing","license":"","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"A. Bramon, M.D. Scadron, R. Escribano","submitted_at":"2000-12-05T14:28:49Z","abstract_excerpt":"A value for the $\\eta$-$\\eta^\\prime$ mixing angle is extracted from the data on $VP\\gamma$ transitions using simple quark-model ideas. The set of data covers {\\it all} possible radiative transitions between the pseudoscalar and vector meson nonets. Two main ingredients of the model are the introduction of flavour-dependent overlaps for the various $q\\bar{q}$ wave functions and the use of the quark-flavour basis to describe the $\\eta$-$\\eta^\\prime$ system. In this basis the mixing angle is found to be $\\phi_P=(37.7\\pm 2.4)^\\circ$."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-ph/0012049","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/0012049/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"}