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Combining with other CLEO measurements of B(Ds+ -> tau+ nu) we determine the pseudoscalar decay constant fDs = (259.7\\pm 7.8\\pm 3.4) MeV consistent with the value obtained from our Ds+ -> mu+ nu measurement of (257.6\\pm 10.3\\pm 4.3) MeV. Combining these measurements we find a value of fDs=(259.0 \\pm 6.2\\pm 3.0) MeV, that differs from the most accurate prediction based on unquenched"},"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":"0910.3602","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ex","submitted_at":"2009-10-19T15:57:32Z","cross_cats_sorted":["hep-lat","hep-ph"],"title_canon_sha256":"23df8b749f276ada0ab8ef3b89d6d3c28923a2df2ac8aeeffbf34ddeee999f43","abstract_canon_sha256":"de409f90c823cc9ef3b46937ecff43df3553b198bb2916243946544b415a82c0"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:48:02.167834Z","signature_b64":"ZaVzGkN2UO8SdDxYKL4Dslp26J3aUCrhDTcK1JF+YWTQ5w9b0ZuQsqlFUIN6SUiqdYnHY8UFS4DV23A9FCFPAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"3d56c2f659ac2afb74f836df9d39b5c3159fbb61880c175a5a173a57d8c1e23a","last_reissued_at":"2026-05-18T03:48:02.167272Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:48:02.167272Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Measurement of the Pseudoscalar Decay Constant fDs Using Ds+ -> tau+ nu, tau+ -> rho+ anti-nu Decays","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-lat","hep-ph"],"primary_cat":"hep-ex","authors_text":"The CLEO Collaboration","submitted_at":"2009-10-19T15:57:32Z","abstract_excerpt":"Analyzing 600/pb of e+e- collisions at 4170 MeV center-of-mass energy with the CLEO-c detector, we measure the branching fraction B(Ds+ -> tau+ nu)=(5.52\\pm 0.57\\pm 0.21)% using the tau+ -> rho^+ anti-nu decay mode. Combining with other CLEO measurements of B(Ds+ -> tau+ nu) we determine the pseudoscalar decay constant fDs = (259.7\\pm 7.8\\pm 3.4) MeV consistent with the value obtained from our Ds+ -> mu+ nu measurement of (257.6\\pm 10.3\\pm 4.3) MeV. 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