{"paper":{"title":"Determination of $\\alpha_s$ and the Nucleon Spin Decomposition Using Recent Polarized Structure Function Data","license":"","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"John Ellis, Marek Karliner","submitted_at":"1994-07-13T13:39:00Z","abstract_excerpt":"New data on polarized $\\mu-p$ and $e-p$ scattering permit a first determination of $\\alpha_s$ using the Bjorken sum rule, as well as higher precision in determining the nucleon spin decomposition. Using perturbative QCD calculations to $O(\\alpha_s^4)$ for the non-singlet combination of structure functions, we find $\\alpha_s(2.5 GeV^2) = 0.375^{+0.062}_{-0.081}$, corresponding to $\\alpha_s(M_Z^2) =0.122^{+0.005}_{-0.009}$, and using calculations to $O(\\alpha_s^3)$ for the singlet combination we find $\\Delta u = 0.83 \\pm 0.03$, $\\Delta d= -0.43 \\pm 0.03$, $\\Delta s =-0.10 \\pm 0.03$, $\\Delta \\Sig"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-ph/9407287","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/hep-ph/9407287/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"}