Download or read book Charmed Meson Decay Constants in Three-flavor Lattice QCD. written by and published by . This book was released on 2005 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors present the first lattice QCD calculation with realistic sea quark content of the D-meson decay constant f{sub D+}. They 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). They obtain f{sub D+} = 201 ± 3 ± 17 MeV, where the errors are statistical and a combination of systematic errors. They also obtain f{sub D{sub s}} = 249 ± 3 ± 16 MeV for the D{sub s} meson.