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Assuming universality, the value ${\\cal A}_{e{-}\\tau} = 0.1474 \\pm 0.0045$ is obtained from which the effective weak mixing angle $\\sin^2 {\\theta_{\\mathrm{W}}^{\\mathrm{eff}}} =0.23147 \\pm 0.00057 $ is derived."},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"hep-ex/0104038","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"hep-ex","submitted_at":"2001-04-20T12:21:33Z","cross_cats_sorted":[],"title_canon_sha256":"5add07d9068c7c33751dbe84527fdf2a56ea319dc84711df487941b642ee9f7b","abstract_canon_sha256":"cf720e2f91cbef5d1b6807c92e29acaf4e9430b6735584422a3882fc3bd75d5a"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:47:33.216591Z","signature_b64":"NcxvOma7bNss8FYYOCnzwAQo5mLk05Qm0eTagMvNv4sdZ2caMfCdfrgIKq6tBpWyBuur0D1DuPECGsWEPHCsBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"4b307076406878bbe62ce52b48b474a7ff1dd7a080e022ec7a86dd1d609af865","last_reissued_at":"2026-05-18T03:47:33.216218Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:47:33.216218Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Measurement of the Tau Polarisation at LEP","license":"","headline":"","cross_cats":[],"primary_cat":"hep-ex","authors_text":"ALEPH Collaboration","submitted_at":"2001-04-20T12:21:33Z","abstract_excerpt":"The polarisation of $\\tau$'s produced in Z decay is measured using 160 pb$^{-1}$ of data accumulated at LEP by the ALEPH detector between 1990 and 1995. 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