Lattice quark masses: a non-perturbative measurement

Details Lattice quark masses: a non-perturbative measurement Lattice quark masses: a non-perturbative measurement

1998-01-21

arxiv.org/abs/hep-lat/9801028v3

Nucl.Phys. B540 (1999) 472-490

Physics

High Energy Physics

High Energy Physics - Lattice

21 pages, 4 figures, typos corrected, no result changed

Scientific paper

10.1016/S0550-3213(98)00759-7

We discuss the renormalization of different definitions of quark masses in the Wilson and the tree-level improved SW-Clover fermionic action. For the improved case we give the correct relationship between the quark mass and the hopping parameter. Using perturbative and non-perturbative renormalization constants, we extract quark masses in the $\MSbar$ scheme from Lattice QCD in the quenched approximation at $\beta=6.0$, $\beta=6.2$ and $\beta=6.4$ for both actions. We find: $\bar{m}^{\MSbar}(2 GeV)=5.7 \pm 0.1 \pm 0.8$ MeV, $m_s^{\MSbar}(2GeV)= 130 \pm 2 \pm 18 $ MeV and $m_c^{\MSbar}(2 GeV) = 1662\pm 30\pm 230$ MeV.

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