{"paper":{"title":"Narrow Pentaquark States in a Quark Model with Antisymmetrized Molecular Dynamics","license":"","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"O. Morimatsu, T. Nishikawa, Y. Kanada-En'yo","submitted_at":"2004-10-15T07:16:59Z","abstract_excerpt":"The exotic baryon $\\Theta^+(uudd\\bar{s})$ is studied with microscopic calculations in a quark model by using a method of antisymmetrized molecular dynamics(AMD). We predict narrow states, $J^\\pi=1/2^+(I=0)$, $J^\\pi=3/2^+(I=0)$, and $J^\\pi=3/2^-(I=1)$, which nearly degenerate in a low-energy region of the $uudd\\bar{s}$ system. We discuss $NK$ decay widths and estimate them to be $\\Gamma< 7$ for the $J^\\pi=\\{1/2^+,3/2^+\\}$, and $\\Gamma<1$ MeV for the $J^\\pi=3/2^-$ state."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-ph/0410221","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"}