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Lattice quark masses: a non-perturbative measurement

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Lattice quark masses: a non-perturbative measurement

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Giménez Gómez, Vicente; Giusti, L.; Rapuano, F.; Talevi, Mauro

Aquest document és un/a article, creat/da en: 1999

We discuss the renormalization of different definitions of quark masses in the Wilson and the tree-level improved SW-Clover fermionic action. Using perturbative and non-perturbative renormalization constants, we study quark masses in the MS scheme from Lattice QCD in the quenched approximation at beta = 6.0, beta = 6.2 and beta = 6.4 for both actions. A reliable extrapolation to the continuum limit is however not yet possible. The most reliable results are (m) over bar(<(MS)over bar>)(2 GeV) = 5.7+/-0.1+/-0.8 MeV, m(s)(<(MS)over bar>)(2 GeV) = 130+/-2+/-18 MeV and m(c)(<(MS)over bar>) (2 GeV) = 1662+/-30+/-230 MeV.

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