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Aubert, et al, The BABAR Collaboration","submitted_at":"2009-12-01T19:53:55Z","abstract_excerpt":"Using 467 $fb^{-1}$ of $e^+e^-$ annihilation data collected with the BaBar detector, we measure $\\frac{{\\cal{B}}(\\tau^- \\to \\mu^- \\bar{\\nu}_\\mu \\nu_\\tau)}{{\\cal{B}}(\\tau^- \\to e^- \\bar{\\nu}_e \\nu_\\tau)} = (0.9796 \\pm 0.0016 \\pm 0.0036)$, $\\frac{{\\cal{B}}(\\tau^- \\to \\pi^- \\nu_\\tau)}{{\\cal{B}}(\\tau^- \\to e^- \\bar{\\nu}_e \\nu_\\tau)} = (0.5945 \\pm 0.0014 \\pm 0.0061)$, and $\\frac{{\\cal{B}}(\\tau^- \\to \\K^- \\nu_\\tau)}{{\\cal{B}}(\\tau^- \\to e^- \\bar{\\nu}_e \\nu_\\tau)} = (0.03882 \\pm 0.00032 \\pm 0.00057)$, where the uncertainties are statistical and systematic, respectively. From these precision $\\tau$ me"},"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":"0912.0242","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ex","submitted_at":"2009-12-01T19:53:55Z","cross_cats_sorted":[],"title_canon_sha256":"e80d8c9a746c8c5b3156374e8073ceb9b4cffc3acf142fcc152ac7c6df30ebe2","abstract_canon_sha256":"5594578cc82fdd9172f632871b341e50528d61c268add70af0a5789259e83fd5"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:24:45.985589Z","signature_b64":"n3Ps4rwYcvQlyLC3Rst0+UUFBgi4LgtyCz3lw6NRzR0kHNppDaxRGxFQ9E8aBys9AZXMCyqIumkV4ZxKzuS2Dw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"3f3c23ed49dc593f15a0abdfb9300ac77046fbedcdf6127dfe0c8e398f8013c3","last_reissued_at":"2026-05-18T02:24:45.985131Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:24:45.985131Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Measurements of Charged Current Lepton Universality and $|V_{us}|$ using Tau Lepton Decays to $e^- \\bar{\\nu}_e \\nu_\\tau$, $\\mu^- \\bar{\\nu}_\\mu \\nu_\\tau$, $\\pi^- \\nu_\\tau$, and $\\K^- \\nu_\\tau$","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-ex","authors_text":"B. Aubert, et al, The BABAR Collaboration","submitted_at":"2009-12-01T19:53:55Z","abstract_excerpt":"Using 467 $fb^{-1}$ of $e^+e^-$ annihilation data collected with the BaBar detector, we measure $\\frac{{\\cal{B}}(\\tau^- \\to \\mu^- \\bar{\\nu}_\\mu \\nu_\\tau)}{{\\cal{B}}(\\tau^- \\to e^- \\bar{\\nu}_e \\nu_\\tau)} = (0.9796 \\pm 0.0016 \\pm 0.0036)$, $\\frac{{\\cal{B}}(\\tau^- \\to \\pi^- \\nu_\\tau)}{{\\cal{B}}(\\tau^- \\to e^- \\bar{\\nu}_e \\nu_\\tau)} = (0.5945 \\pm 0.0014 \\pm 0.0061)$, and $\\frac{{\\cal{B}}(\\tau^- \\to \\K^- \\nu_\\tau)}{{\\cal{B}}(\\tau^- \\to e^- \\bar{\\nu}_e \\nu_\\tau)} = (0.03882 \\pm 0.00032 \\pm 0.00057)$, where the uncertainties are statistical and systematic, respectively. 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