Leptonic decay constants fDs and fD in three flavor lattice QCD

J. N. Simone, C. Aubin, C. Bernard, C. DeTar, M. di Pierro, A. X. El-Khadra, Steven Gottlieb, E. B. Gregory, U. M. Heller, J. E. Hetrick, A. S. Kronfeld, P. B. Mackenzie, D. P. Menscher, M. Nobes, M. Okamoto, M. B. Oktay, J. Osborn, R. Sugar, D. Toussaint, H. D. Trottier

Research output: Contribution to journalArticlepeer-review

14 Scopus citations


We determine the leptonic decay constants fDs and fD in three flavor unquenched lattice QCD. We use O(a2)-improved sraggered 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 fDs = 263-9+5 ± 24 MeV and fD = 225-13+11 ± 21 MeV. In each case, the first reported error is statistical while the second is the combined systematic uncertainty.

Original languageEnglish (US)
Pages (from-to)443-445
Number of pages3
JournalNuclear Physics B - Proceedings Supplements
Issue numberSPEC. ISS.
StatePublished - Mar 2005

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Nuclear and High Energy Physics


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