{"paper":{"title":"Hidden charm pentaquark and $\\Lambda(1405)$ in the $\\Lambda^0_b \\to \\eta_c K^- p (\\pi \\Sigma)$ reaction","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ex","nucl-ex","nucl-th"],"primary_cat":"hep-ph","authors_text":"Eulogio Oset, Ju-Jun Xie, Wei-Hong Liang","submitted_at":"2017-11-06T03:36:46Z","abstract_excerpt":"We have performed a study of the $\\Lambda^0_b \\to \\eta_c K^- p$ and $\\Lambda^0_b \\to \\eta_c \\pi \\Sigma$ reactions based on the dominant Cabibbo favored weak decay mechanism. We show that the $K^- p$ produced only couples to $\\Lambda^*$ states, not $\\Sigma^*$ and that the $\\pi \\Sigma$ state is only generated from final state interaction of $\\bar{K}N$ and $\\eta \\Lambda$ channels which are produced in a primary stage. This guarantees that the $\\pi \\Sigma$ state is generated in isospin $I=0$ and we see that the invariant mass produces a clean signal for the $\\Lambda(1405)$ of higher mass at $1420$"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1711.01710","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"}