{"paper":{"title":"Aspects of $\\chi$ and $\\psi$ Production in Polarized Proton-Proton Collisions","license":"","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"M. A. Doncheski, R. W. Robinett","submitted_at":"1994-01-08T14:01:34Z","abstract_excerpt":"Several topics of relevance to low transverse momentum $\\psi$ and $\\chi_{1,2}(c\\overline{c})$ production in polarized proton-proton collisions are discussed. The leading ${\\cal O}(\\alpha_S^3)$ contributions to the low $p_T$ $\\chi_1$ production cross-sections via $gg$, $qg$, and $q\\overline{q}$ initial states are calculated as well as the corresponding spin-spin asymmetries. We find that $\\chi_1$ production increases relative to direct $\\psi$ and $\\chi_2$ production, providing up to $25\\%$ of the observable $e^+e^-$ pairs arising from $\\psi$ decays in $pp$ collisions at $\\sqrt{s} = 500\\,GeV$. T"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-ph/9401224","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":""},"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"}