{"paper":{"title":"Update of the electromagnetic effective coupling constant $\\alpha(M^2_Z)$","license":"","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"N.V.Krasnikov, R.Rodenberg","submitted_at":"1997-11-18T13:09:18Z","abstract_excerpt":"We recalculate the hadronic contribution to the effective electromagnetic coupling constant $\\alpha(M^2_Z)$ using quasi-analytical approximations for the cross-section of $e^{+}e^{-} \\to hadrons$ proposed earlier by one of the authors(N.V.K.,Mod.Phys.Lett.A9(1994)2825). We find that $\\alpha^{-1}(M^2_Z) = 128.98 \\pm 0.06$."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-ph/9711367","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"}