The determination of decay constants fDs and fD in three-flavor
lattice QCD
Presenter: James Simone
C. Aubin, C. Bernard, C. DeTar, M. Di Pierro, A.X. El-Khadra, E. Freeland,
S. Gottlieb, U.M. Heller, J.E. Hetrick, A.S. Kronfeld, L. Levkova, P.B. Mackenzie, F. Maresca, D. Menscher, M. Nobes, M. Okamoto, D Renner, J.N. Simone,
R. Sugar, D. Toussaint and H.D. Trottier
Abstract: We determine the leptonic decay constants fDs and fD in 2 + 1 flavor lattice QCD. We compute them in the partially quenched theory and use
Staggered Chiral Perturbation Theory to fix the low energy constants needed to
obtain fD . We study several lattice spacings to estimate the continuum limits.
1