The decay constants fDs and fD+ 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 journalConference articlepeer-review


We determine the charmed meson decay constants in 2+1 flavor lattice QCD. We find fD+ = 201±3±17 MeV and fDs = 249±3±16 MeV where the errors are statistical and the combined systematic uncertainty. We simulate quarks as light as mq/ms = 0.1 and use NLO predictions of Chiral Perturbation Theory to control the extrapolation to the physical results. We study three lattice spacings in order to estimate the continuum limit. All of the results presented at Lattice 2005 appear in the publication: C. Aubin et al., "Charmed meson decay constants in three-flavor lattice QCD", Phys. Rev. Lett. 95, 122002 (2005), [arXiv: hep-lat/0506030].

Original languageEnglish (US)
JournalProceedings of Science
StatePublished - 2005
Event23rd International Symposium on Lattice Field Theory, LAT 2005 - Dublin, Ireland
Duration: Jul 25 2005Jul 30 2005

ASJC Scopus subject areas

  • General


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