{"paper":{"title":"From prompt to direct J/$\\psi$ production: new insights on the $\\chi_{c1}$ and $\\chi_{c2}$ polarizations and feed-down contributions from a global-fit analysis of mid-rapidity LHC data","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"Carlos Louren\\c{c}o, Pietro Faccioli, Thomas Madlener","submitted_at":"2020-06-27T21:04:31Z","abstract_excerpt":"While the prompt J/$\\psi$ cross section and polarization have been measured with good precision as a function of transverse momentum, $p_{\\rm T}$, those of the directly produced J/$\\psi$ are practically unknown, given that the cross sections and polarizations of the $\\chi_{c1}$ and $\\chi_{c2}$ mesons, large indirect contributors to J/$\\psi$ production, are only known with rather poor accuracy. The lack of precise measurements of the $\\chi_{cJ}$ polarizations induces large uncertainties in the level of their feed-down contributions to the prompt J/$\\psi$ yield, because of the polarization-depen"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2006.15446","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/2006.15446/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"}