{"paper":{"title":"Radiative vertex $VP\\gamma$ and $\\eta-\\eta'$ mixing in light-cone sum rules","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"Chang-Qiao Du, Hong Chen, Jian-Mei Hou, Ming-Zhen Zhou","submitted_at":"2010-10-22T06:53:32Z","abstract_excerpt":"In this work, we calculate radiative vertex $VP\\gamma$ ($V=\\phi,\\omega,\\rho$ and $P=\\eta,\\eta'$) by utilizing $\\omega-\\phi$ mixing scheme and taking into account the contributions of the three-particle twist-4 distribution amplitudes of the photon in QCD sum rules on light cone. According to experimental data of $V\\rightarrow P\\gamma$ and $P\\rightarrow V\\gamma$ from PDG, a value of the $\\eta-\\eta^\\prime$ mixing angle, $\\phi=(40.9\\pm0.5)^\\circ$, is extracted in the framework of the quark-flavor basis to describe the $\\eta-\\eta^\\prime$ system."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1010.4623","kind":"arxiv","version":2},"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"}