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

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

doi:10.1016/S0370-2693(97)00580-7

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

High Energy Physics - Lattice 2016-09-01 v1 High Energy Physics - Phenomenology

Authors: 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 $\beta=6.0$ 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.

Keywords

lattice QCD decay constants D meson B meson Clover action Wilson action heavy-light mesons

Cite

@article{arxiv.hep-lat/9703002,
  title  = {A High Statistics Lattice Calculation of Heavy-Light Meson Decay Constants},
  author = {C. R. Allton and L. Conti and M. Crisafulli and L. Giusti and G. Martinelli and F. Rapuano},
  journal= {arXiv preprint arXiv:hep-lat/9703002},
  year   = {2016}
}

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15 pages, Latex with one postscript figure

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

Abstract

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