Phys. Rev. Lett. 95, 122002 (2005) [5 pages]Charmed-Meson Decay Constants in Three-Flavor Lattice QCD
C. Aubin1, C. Bernard2, C. DeTar3, M. Di Pierro4, E. D. Freeland5, Steven Gottlieb6, U. M. Heller7, J. E. Hetrick8, A. X. El-Khadra9, A. S. Kronfeld10, L. Levkova6, P. B. Mackenzie10, D. Menscher9, F. Maresca3, M. Nobes11, M. Okamoto10, D. Renner12, J. Simone10, R. Sugar13, D. Toussaint12, and H. D. Trottier14 (Fermilab Lattice, MILC, and HPQCD Collaborations) Received 28 June 2005; published 14 September 2005 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±17 MeV, where the errors are statistical and a combination of systematic errors. We also obtain fDs=249±3±16 MeV for the Ds meson. ©2005 The American Physical Society
URL: http://link.aps.org/doi/10.1103/PhysRevLett.95.122002 [ Abstract | Previous article | Next article | Issue 12 ] |
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