Heavy light decay constants on the lattice
arXiv:hep-lat/0109026 · doi:10.1016/S0920-5632(01)01723-6
Abstract
We present results for the leptonic decays of heavy-light mesons in the quenched approximation and a preliminary result for f_Ds with dynamical fermions for Nf=2. We examine the systematic effects of extrapolating the decay constants from the charm to the bottom quark mass, and find this extrapolation to be under control. We present a preliminary result for f_Ds{Nf=2} and compare to f_Ds{Nf=0} matched to have the same lattice spacing set by the Sommer scale, r0. We find no significant difference.
Lattice2001(heavyquark) 3 pages, 3 figures. Report number corrected