出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：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] .
