{"paper":{"title":"Understanding the radiative decays of vector charmonia to light pseudoscalar mesons","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ex","nucl-th"],"primary_cat":"hep-ph","authors_text":"Qiang Zhao","submitted_at":"2010-12-06T13:22:27Z","abstract_excerpt":"We show that the newly measured branching ratios of vector charmonia ($J/\\psi$, $\\psi^\\prime$ and $\\psi(3770))$ into $\\gamma P$, where $P$ stands for light pseudoscalar mesons $\\pi^0$, $\\eta$, and $\\eta^\\prime$, can be well understood in the framework of vector meson dominance (VMD) in association with the $\\eta_c$-$\\eta(\\eta^\\prime)$ mixings due to the axial gluonic anomaly. These two mechanisms behave differently in $J/\\psi$ and $\\psi^\\prime\\to \\gamma P$. A coherent understanding of the branching ratio patterns observed in $J/\\psi(\\psi^\\prime)\\to \\gamma P$ can be achieved by self-consistentl"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1012.1165","kind":"arxiv","version":3},"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"}