{"paper":{"title":"Analysis of the Crystal Ball data on $K^-p\\to\\pi^0\\Sigma^0$ reaction with center-of-mass energies of $1536\\sim 1676$ MeV","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["nucl-th"],"primary_cat":"hep-ph","authors_text":"Bing-Song Zou, Jun Shi","submitted_at":"2014-11-03T13:46:29Z","abstract_excerpt":"With an effective Lagrangian approach, we analyze the $K^-p\\to \\pi^0\\Sigma^0$ reaction to study the $\\Lambda$ hyperon resonances by fitting the Crystal Ball data on differential cross sections and $\\Sigma^0$ polarization with the center-of-mass energies of $1536\\sim 1676$ MeV. Besides well established PDG 4-star $\\Lambda$ resonances around this energy range, the $\\Lambda(1600){1\\over 2}^+$ resonance, listed as a 3-star resonance in PDG, is found to be definitely needed. In addition, there is strong evidence for the existence of a new $\\Lambda({3\\over 2}^+)$ resonance around 1680 MeV."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1411.0486","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"}