{"paper":{"title":"Search for the $Z_1(4050)^+$ and $Z_2(4250)^+$ states in $\\bar B^0 \\to \\chi_{c1} K^- \\pi^+$ and $B^+ \\to \\chi_{c1} K^0_S \\pi^+$","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-ex","authors_text":"et al, J. P. Lees, The BABAR Collaboration","submitted_at":"2011-11-25T09:02:39Z","abstract_excerpt":"We search for the $Z_1(4050)^+$ and $Z_2(4250)^+$ states, reported by the Belle Collaboration, decaying to $\\chi_{c1} \\pi^+$ in the decays $\\bar B^0 \\to \\chi_{c1} K^- \\pi^+$ and $B^+ \\to \\chi_{c1} K^0_S \\pi^+$ where $\\chi_{c1} \\to \\jpsi \\gamma$. The data were collected with the BaBar detector at the SLAC PEP-II asymmetric-energy $e^+e^-$ collider operating at center-of-mass energy 10.58 GeV, and correspond to an integrated luminosity of 429 fb$^{-1}$. In this analysis, we model the background-subtracted, efficiency-corrected $\\chi_{c1}\\pi$ mass distribution using the $K \\pi$ mass distribution "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1111.5919","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"}