Charmed-meson decay constants in three-flavor lattice QCD

C. Aubin, C. Bernard, C. Detar, M. Di Pierro, E. D. Freeland, Steven Gottlieb, U. M. Heller, J. E. Hetrick, A. X. El-Khadra, A. S. Kronfeld, L. Levkova, P. B. MacKenzie, D. Menscher, F. Maresca, M. Nobes, M. Okamoto, D. Renner, J. Simone, R. Sugar, D. ToussaintH. D. Trottier

Research output: Contribution to journalArticlepeer-review


We present the first lattice QCD calculation with realistic sea quark content of the D+-meson decay constant fD+. We use the MILC Collaboration's publicly available ensembles of lattice gauge fields, which have a quark sea with two flavors (up and down) much lighter than a third (strange). We obtain fD+=201±3±17MeV, where the errors are statistical and a combination of systematic errors. We also obtain fDs=249±3±16MeV for the Ds meson.

Original languageEnglish (US)
Article number122002
JournalPhysical review letters
Issue number12
StatePublished - Sep 16 2005

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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