{"paper":{"title":"The decays $\\rho^{-}\\to\\eta\\pi^{-}$ and $\\tau^{-}\\to\\eta(\\eta')\\pi^{-}\\nu$ in the NJL model","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"D. G. Kostunin, M. K. Volkov","submitted_at":"2012-05-15T11:19:59Z","abstract_excerpt":"The widths of the decays $\\rho^{-}\\to\\eta\\pi^{-}$ and $\\tau^{-}\\to\\eta(\\eta')\\pi^{-}\\nu$ are calculated in the framework of the NJL model. It is shown that these decays are defined by the $u$ and $d$ quark mass difference. It leads to the suppression of these decays in comparison with the main decay modes. In the process $\\rho^{-}\\to\\eta\\pi^{-}$ the intermediate scalar $a_0^{-}$ state is taken into account. For the $\\tau$ decays the intermediate states with $a_0^{-}$, $\\rho^{-}(770)$ and $\\rho^{-}(1450)$ mesons are used. Our estimates are compared with the results obtained in other works."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1205.3329","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"}