{"paper":{"title":"Isospin breaking decays as a diagnosis of the hadronic molecular structure of the $P_c(4457)$","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ex","nucl-th"],"primary_cat":"hep-ph","authors_text":"Feng-Kun Guo, Hao-Jie Jing, Shuntaru Sakai, Ulf-G. Mei{\\ss}ner","submitted_at":"2019-03-27T15:54:57Z","abstract_excerpt":"The LHCb Collaboration announced the observation of three narrow structures consistent with hidden-charm pentaquark states. They are candidates of hadronic molecules formed of a pair of a charmed baryon and an anticharmed meson. Among them, the $P_c(4457)$ mass is consistent with earlier predictions of a $\\Sigma_c\\bar D^*$ molecule with $I=1/2$. We point out that if such a picture were true, one would have $\\mathcal{B}(P_c(4457)\\to J/\\psi \\Delta^+)/\\mathcal{B}(P_c(4457)\\to J/\\psi p)$ at the level ranging from a few percent to about 30%. Such a large isospin breaking decay ratio is two to three"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1903.11503","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"}