Understand
We present the leptonic decay constants fDs and fD+ 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.
Built on
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H. F. A. G. C. Physics), “ f D s f_{D_{s}} world average.” www.slac.stanford.edu/xorg/hfag/charm/PIC09/f_ds/results.html , 2009
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Closest in time.
The MILC
2009
Closest in time.
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