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- W2102540255 abstract "We present the leptonic decay constants fDs and f D+ computed on the MILC collaboration’s 2+ 1 flavor asqtad gauge ensembles. We use clover heavy quarks with the Fermilab interpretation and improved staggered light quarks. The simultaneous chiral and continuum extrapolation, which determines both decay constants, includes partially-quenched lattice results at lattice spacings a 0:09, 0:12 and 0:15 fm. We have made several recent improvements in our analysis: a) we include terms in the fit describing leading order heavy-quark discretization effects, b) we have adopted a more precise input r1 value consistent with our other D and B meson studies, c) we have retuned the input bare charm masses based upon the new r1. Our preliminary results are fDs = 260 10 MeV and fD+ = 217 10 MeV." @default.
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- W2102540255 date "2009-12-01" @default.
- W2102540255 modified "2023-09-27" @default.
- W2102540255 title "The Ds and D+ Leptonic Decay Constants from Lattice QCD" @default.
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