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Decay constants of charm and beauty pseudoscalar heavy–light mesons on fine lattices

URN to cite this document:
urn:nbn:de:bvb:355-epub-137297
Ali Khan, A. ; Braun, Vladimir M. ; Burch, Tommy ; Göckeler, Meinulf ; Lacagnina, G. N. ; Schäfer, Andreas ; Schierholz, Gerrit
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Date of publication of this fulltext: 22 Mar 2010 13:00



Abstract

We compute decay constants of heavy–light mesons in quenched lattice QCD with a lattice spacing of asimilar, equals0.04 fm using non-perturbatively O(a) improved Wilson fermions and O(a) improved currents. We obtain fDs=220(6)(5)(11) MeV, fD=206(6)(3)(22) MeV, fBs=205(7)(26)(17) MeV and fB=190(8)(23)(25) MeV, using the Sommer parameter r0=0.5 fm to set the scale. The first error is statistical, ...

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