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arXiv · hep-lat/9703002

A High Statistics Lattice Calculation of Heavy-Light Meson Decay Constants

C. R. Allton·L. Conti·M. Crisafulli·L. Giusti·G. Martinelli·F. Rapuano
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Abstract

We present a high statistics study of the D- and B-meson decay constants. The results were obtained by using the Clover and Wilson lattice actions at two different values of the lattice spacing $a$, corresponding to $β=6.0$ and 6.2. After a careful analysis of the systematic errors present in the extraction of the physical results, by assuming quite conservative discretization errors, we find $f_{D_s}=237 \pm 16$ MeV, $f_{D} = 221 \pm 17$ MeV ($f_{D_s}/f_D=1.07(4)$), $f_{B_s} = 205 \pm 35$ MeV, $f_{B} = 180 \pm 32$ MeV ($f_{B_s}/f_B=1.14(8)$), in good agreement with previous estimates.

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C. R. Allton, L. Conti, M. Crisafulli, L. Giusti, G. Martinelli, F. Rapuano. 1997-03-03. A High Statistics Lattice Calculation of Heavy-Light Meson Decay Constants. https://doi.org/10.1016/s0370-2693(97)00580-7

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