{"paper":{"title":"Radiative decays of radially excited mesons ${\\pi^0}'$, ${\\rho^0}'$, $\\omega'$ in NJL model","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"A.B. Arbuzov, E.A. Kuraev, M.K. Volkov","submitted_at":"2010-07-07T06:19:25Z","abstract_excerpt":"Radiative decays $\\pi^0({\\pi^0}')\\to\\gamma+\\gamma$, ${\\pi^0}'\\to\\rho^0(\\omega)+\\gamma$, ${\\rho^0}'(\\omega')\\to\\pi^0+\\gamma$, and ${\\rho^0}'(\\omega')\\to{\\pi^0}'+\\gamma$ are considered in the framework of the non-local SU(2)$\\times$SU(2) NJL model. Radially excited mesons are described with the help of polynomial form factor $f({k^\\bot}^2)$, where $k^\\bot$ is the quark momentum transverse to the external meson momentum. In spite of mixing of the ground and excited meson states in this model, the decay widths of $\\pi^0\\to\\gamma+\\gamma$ and $\\rho^0(\\omega)\\to\\pi^0+\\gamma$ are found to be in good a"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1007.1057","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"}