The PACS collaboration obtains preliminary charge radii of 0.423(10) fm^2 for pi+ and 0.373(4) fm^2 for K+ at a single lattice spacing, consistent with experiment.
Computing the Slope of the Isgur-Wise Function
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abstract
We propose a method for evaluating the slope (and higher derivatives) of the Isgur-Wise function at the zero recoil point using lattice simulations. These derivatives are required for the extrapolation of the experimental data for $B\rightarrow D^*l\bar\nu$ decays to the zero recoil point, from which the $V_{cb}$ element of the CKM-matrix can be determined.
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Calculation of meson charge radii using model-independent method in the PACS10 configuration
The PACS collaboration obtains preliminary charge radii of 0.423(10) fm^2 for pi+ and 0.373(4) fm^2 for K+ at a single lattice spacing, consistent with experiment.