{"paper":{"title":"Role of the $\\Lambda^+_c(2940)$ in the $\\pi^- p \\to D^- D^0 p$ reaction close to threshold","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ex","nucl-ex","nucl-th"],"primary_cat":"hep-ph","authors_text":"Ju-Jun Xie, Xu Cao, Yu-bing Dong","submitted_at":"2015-06-03T06:08:32Z","abstract_excerpt":"We report on a theoretical study of the $\\pi^- p \\to D^- D^0 p$ reaction near threshold within an effective Lagrangian approach. The production process is described by $t$ channel $D^{*0}$ meson exchange, $s$-channel nucleon pole, and $u$ channel $\\Sigma^{++}_{c}$ exchange. In our work, the final $D^0 p$ results from the ground $\\Lambda^+_c(2286)$ state and also dominantly from the excited $\\Lambda^+_c(2940)$ state which is assumed as a $D^{*0} p$ molecular state with spin parity $J^P = \\frac{1}{2}^+$ or $\\frac{1}{2}^-$. We calculate the total cross section of the $\\pi^- p \\to D^- D^0 p$ react"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1506.01133","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"}