{"paper":{"title":"A hidden-charm pentaquark state in $\\Lambda^0_b \\to J/\\psi p \\pi^-$ decay","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"De-Min Li, En Wang, Eulogio Oset, Hua-Xing Chen, Li-Sheng Geng","submitted_at":"2015-12-07T10:02:32Z","abstract_excerpt":"We study here the $\\Lambda_b^0 \\to J/\\psi p \\pi^-$ reaction in analogy to the $\\Lambda^0_b \\to J/\\psi p K^-$ one, and we note that in both decays there is a sharp structure (dip or peak) in the $J/\\psi p$ mass distribution around $4450$ MeV, which is associated in the $\\Lambda^0_b \\to J/\\psi p K^-$ experiment to an exotic pentaquark baryonic state, although in $\\Lambda_b^0 \\to J/\\psi p \\pi^-$ it shows up with relatively low statistics. We analyze the $\\Lambda^0_b \\to J/\\psi p \\pi^-$ interaction along the same lines as the $\\Lambda^0_b \\to J/\\psi p K^-$ one, with the main difference stemming fr"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1512.01959","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"}