{"paper":{"title":"The $Z_b$ structures in a constituent quark model coupled-channels calculation","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"Francisco Fernandez, Jorge Segovia, Pablo G. Ortega","submitted_at":"2021-07-06T11:20:00Z","abstract_excerpt":"The $Z_b(10610)^\\pm$ and $Z_b(10650)^\\pm$ are two bottomonium-like structures discovered in the $\\pi h_b(mP)$, $\\pi \\Upsilon(nS)$ and $B^\\ast\\bar B^{(\\ast)}+h.c.$ invariant mass spectra, where $m=\\{1,2\\}$ and $n=\\{1,2,3\\}$. Their nature is puzzling due to their charge, which forces its minimal quark content to be $b\\bar b u\\bar d$ ($b\\bar b d\\bar u$). Thus, it is necessary to explore four-quark systems in order to understand their inner structure. Additionally, their strong coupling to channels such as $\\pi \\Upsilon$ and the closeness of their mass to $B^\\ast\\bar B^{(\\ast)}$-thresholds stimula"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2107.02544","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2107.02544/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"}