Continuum Determination of Light Quark Masses from Quenched Lattice QCD

Abstract

We compute the strange and the average up/down quark masses in the quenched approximation of lattice QCD, by using the O(a)-improved Wilson action and operators and by implementing the non-perturbative renormalization. Our computation is performed at four values of the lattice spacing, from which we could extrapolate to the continuum limit. Our final result for the strange quark mass (in the MSbar scheme) is ms(2 GeV) = (106 +/- 2 +/- 8) MeV. For the average up/down quark mass we have ml(2 GeV) = (4.4 +/- 0.1 +/- 0.4) MeV. The ratio ms/ml = (24.3 +/- 0.2 +/- 0.6).

14 pages, 3 PostScript figures

References in corpus (3)

• The Nf=0 heavy quark potential from short to intermediate distances
• Quark Masses on the Lattice: Light and Heavy
• Scaling behavior of improvement and renormalization constants

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