Non-perturbative quark mass renormalization in two-flavor QCD

Details Non-perturbative quark mass renormalization in two-flavor QCD Non-perturbative quark mass renormalization in two-flavor QCD

2005-07-23

arxiv.org/abs/hep-lat/0507035v2

Nucl.Phys. B729 (2005) 117-134

Physics

High Energy Physics

High Energy Physics - Lattice

25 pages, 6 figures; sections 1 and 4 rearranged, minor change to the summary plot

Scientific paper

10.1016/j.nuclphysb.2005.09.028

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.

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