Physics – High Energy Physics – High Energy Physics - Lattice
Scientific paper
1997-08-26
Nucl.Phys.Proc.Suppl. 63 (1998) 167-169
Physics
High Energy Physics
High Energy Physics - Lattice
3 pages, Talk presented at LATTICE97(QCD Spectrum and Quark Masses). Small misprints corrected, no conclusions changed
Scientific paper
10.1016/S0920-5632(97)00710-X
We present results of a high statistics study (O(2000) configurations) of the quark masses in the MS-bar scheme from Lattice QCD in the quenched approximation at beta=6.0, beta=6.2 and beta=6.4 using both the Wilson and the tree-level improved SW-Clover fermion action. We extract quark masses from the meson spectroscopy and from the axial Ward Identity using non-perturbative values of the renormalization constants. We compare the results obtained with the two methods and we study the O(a) dependence of the quark masses for both actions. Our best results are m_s^(MS-bar)(2 GeV)=(123 +- 4 +- 15) MeV and m_c^(MS-bar)(2 GeV)=(1525 +- 40 +- 100) MeV.
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