Heavy light decay constants on the lattice
Abstract
We present results for the leptonic decays of heavy-light mesons in the quenched approximation and a preliminary result for fDs 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 fDsNf=2 and compare to fDsNf=0 matched to have the same lattice spacing set by the Sommer scale, r0. We find no significant difference.
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