The running of renormalized quark masses is computed in lattice QCD with two flavors of massless O(a) improved Wilson quarks. The regularization and flavor independent factor that relates running quark masses to the renormalization group invariant ones is evaluated in the Schroedinger Functional scheme. Using existing data for the scale r_0 and the pseudoscalar meson masses, we define a reference quark mass in QCD with two degenerate quark flavors. We then compute the renormalization group invariant reference quark mass at three different lattice spacings. Our estimate for the continuum value is converted to the strange quark mass with the help of chiral perturbation theory.
Cite
@article{arxiv.hep-lat/0507035,
title = {Non-perturbative quark mass renormalization in two-flavor QCD},
author = {Michele Della Morte and Roland Hoffmann and Francesco Knechtli and Juri Rolf and Rainer Sommer and Ines Wetzorke and Ulli Wolff},
journal= {arXiv preprint arXiv:hep-lat/0507035},
year = {2009}
}
Comments
25 pages, 6 figures; sections 1 and 4 rearranged, minor change to the summary plot