{"paper":{"title":"Leptonic decay constants f_Ds and f_D in three flavor lattice QCD","license":"","headline":"","cross_cats":[],"primary_cat":"hep-lat","authors_text":"A.S. Kronfeld, A.X. El-Khadra, C. Aubin, C. Bernard, C. DeTar, D.P. Menscher, D. Toussaint, E.B. Gregory, H.D. Trottier: The Fermilab Lattice, HPQCD Collaborations, J.E. Hetrick, J.N. Simone, J. Osborn, M.B. Oktay, M. Di Pierro, MILC, M. Nobes, M. Okamoto, P.B. Mackenzie, R. Sugar, Steven Gottlieb, U.M. Heller","submitted_at":"2004-10-20T23:21:47Z","abstract_excerpt":"We determine the leptonic decay constants in three flavor unquenched lattice QCD. We use O(a^2)-improved staggered light quarks and O(a)-improved charm quarks in the Fermilab heavy quark formalism. Our preliminary results, based upon an analysis at a single lattice spacing, are f_Ds = 263(+5-9)(+/-24) MeV and f_D = 225(+11-13)(+/-21) MeV. In each case, the first reported error is statistical while the is the combined systematic uncertainty."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-lat/0410030","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"}