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### A high statistics lattice calculation of heavy-light meson decay constants / F. Rapuano, G. Martinelli, M. Crisafulli, Leonardo Giusti, L. Conti, Chris Allton

Physics Letters B, Volume: 405, Issue: 1-2, Pages: 133 - 141

Swansea University Author:

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DOI (Published version): 10.1016/S0370-2693(97)00580-7

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 $\beta=6.0$ and 6.2. After a careful analysis of the systematic errors present in th...

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Published in: Physics Letters B 03702693 1997 https://cronfa.swan.ac.uk/Record/cronfa28494 No Tags, Be the first to tag this record!
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 $\beta=6.0$ 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. College of Science 1-2 133 141