{"paper":{"title":"The role of $a_1(1260)$ in $\\pi^- p \\to a^-_1(1260) p$ and $\\pi^- p \\to \\pi^- \\rho^0 p$ reactions near threshold","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ph","nucl-ex"],"primary_cat":"nucl-th","authors_text":"Chen Cheng, Ju-Jun Xie, Xu Cao","submitted_at":"2016-09-02T01:04:58Z","abstract_excerpt":"We report on a theoretical study of the $\\pi^- p \\to a^-_1(1260) p$ and $\\pi^- p \\to \\pi^- \\rho^0 p$ reactions near threshold within an effective Lagrangian approach. The production process is described by $t$-channel $\\rho^0$ meson exchange. For the $\\pi^- p \\to \\pi^- \\rho^0 p$ reaction, the final $\\pi^- \\rho^0$ results from the decay of the $a_1(1260)$ resonance which is assumed as a dynamically generated state from the $K^* \\bar K$ and $\\rho \\pi$ coupled channel interactions. We calculate the total cross section of the $\\pi^- p \\to a^-_1(1260) p$ reaction. It is shown that, with the couplin"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1609.00442","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"}