{"paper":{"title":"Measurement of the Resonance Parameters of the $\\chi_{1}(1^3P_1)$ and $\\chi_{2}(1^3P_2)$ States of Charmonium formed in Antiproton-Proton Annihilations","license":"","headline":"","cross_cats":[],"primary_cat":"hep-ex","authors_text":"et al, M. Andreotti","submitted_at":"2005-03-10T14:04:14Z","abstract_excerpt":"We have studied the $^3P_J$ ($\\chi_c)$ states of charmonium in formation by antiproton-proton annihilations in experiment E835 at the Fermilab Antiproton Source. We report new measurements of the mass, width, and $B(\\chi_{cJ} \\to \\bar{p} p) \\times \\Gamma(\\chi_{cJ} \\to J/\\psi + anything)$ for the $\\chi_{c1}$ and $\\chi_{c2}$ by means of the inclusive reaction $\\bar{p}p \\to \\chi_{cJ}\n  \\to J/\\psi + anything \\to (e^{+}e^{-}) +anything $. Using the subsample of events where $\\chi_{cJ} \\to \\gamma + J/\\psi \\to \\gamma + (e^{+}e^{-}) $ is fully reconstructed, we derive $B(\\chi_{cJ} \\to \\bar p p)\\times "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-ex/0503022","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/hep-ex/0503022/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"}