{"paper":{"title":"Observation of an Isotriplet of Excited Charmed Baryons Decaying to $\\Lambda_c^+ \\pi$","license":"","headline":"","cross_cats":[],"primary_cat":"hep-ex","authors_text":"et al. (for the Belle Collaboration), R. Mizuk","submitted_at":"2004-12-24T08:20:11Z","abstract_excerpt":"We report the observation of an isotriplet of excited charmed baryons, decaying into Lambda_c+ pi-, Lambda_c+ pi0 and Lambda_c+ pi+. We measure the mass differences M(Lambda_c+ pi)-M(Lambda_c+) and widths to be 515.4 +3.2-3.1 +2.1-6.0 MeV/c^2, 61 +18-13 +22-13 MeV for the neutral state; 505.4 +5.8-4.6 +12.4-2.0 MeV/c^2, 62 +37-23 +52-38 MeV for the charged state and 514.5 +3.4-3.1 +2.8-4.9 MeV/c^2, 75 +18-13 +12-11 MeV for the doubly charged state, where the uncertainties are statistical and systematic, respectively. These results are obtained from a 281 /fb data sample collected with the Bell"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-ex/0412069","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/hep-ex/0412069/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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"}