Abstract
Recent experimental measurements and lattice QCD calculations are now reaching the precision (and accuracy) needed to over-constrain the CKM parameters [Formula: see text] and [Formula: see text]. In this brief review, we discuss the current status of lattice QCD calculations needed to connect the experimental measurements of B meson properties to quark flavor-changing parameters. Special attention is given to B→πℓν, which is becoming a competitive way to determine |Vub|, and to [Formula: see text] mixings, which now include reliable extrapolation to the physical light quark mass. The combination of the recent measurement of the Bs mass difference and current lattice calculations dramatically reduces the uncertainty in |Vtd|. We present an outlook for reducing dominant lattice QCD uncertainties entering CKM fits and remark on lattice calculations for other decay channels.
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