23–28 Jun 2014
Columbia University
US/Eastern timezone

Leptonic B and D decay constants with 2+1 flavor asqtad fermions

25 Jun 2014, 12:30
20m
Uris 141

Uris 141

Talk Weak Decays and Matrix Elements Weak Decays and Matrix Elements

Speaker

Prof. Ethan Neil (University of Colorado, Boulder)

Description

We present the status of our updated D and B meson decay-constant analysis, based on the MILC Nf=2+1 asqtad gauge ensembles. Heavy quarks are incorporated using the Wilson clover action with the Fermilab interpretation. This analysis includes ensembles at five lattice spacings from a=0.045 to 0.15 fm, and light-quark sea masses down to 1/20 of the strange-quark mass. A complete chiral-continuum extrapolation based on partially quenched staggered chiral perturbation theory is presented, along with a detailed analysis of systematic errors.

Primary author

Prof. Ethan Neil (University of Colorado, Boulder)

Presentation materials