{"paper":{"title":"The nature of $Z_b$ states from a combined analysis of $\\Upsilon(5S)\\rightarrow h_b(mP) \\pi^+ \\pi^-$ and $\\Upsilon(5S)\\rightarrow B^{(\\ast)}\\bar B^{(\\ast)}\\pi$","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ex","nucl-th"],"primary_cat":"hep-ph","authors_text":"Guo-Ying Chen, Wen-Sheng Huo","submitted_at":"2015-01-09T16:06:18Z","abstract_excerpt":"With a combined analysis of data on $\\Upsilon(5S)\\rightarrow h_b(1P,2P)\\pi^+\\pi^-$ and $\\Upsilon(5S)\\rightarrow B^{(\\ast)}\\bar B^{(\\ast)}\\pi$ in an effective field theory approach, we determine resonance parameters of $Z_b$ states in two scenarios. In one scenario we assume that $Z_b$ states are pure molecular states, while in the other one we assume that $Z_b$ states contain compact components. We find that the present data favor that there should be some compact components inside $Z_b^{(\\prime)}$ associated with the molecular components. By fitting the invariant mass spectra of $\\Upsilon(5S)"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1501.02189","kind":"arxiv","version":4},"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"}