We complete the non-perturbative calculations of the strange quark mass and the Lambda parameter in two flavor QCD by the ALPHA collaboration. The missing lattice scale is determined via the kaon decay constant, for whose chiral extrapolation complementary strategies are compared. We also give a value for the scale r_0 in physical units as well as an improved determination of the renormalization constant Z_A.
@article{arxiv.1205.5380,
title = {The strange quark mass and Lambda parameter of two flavor QCD},
author = {Patrick Fritzsch and Francesco Knechtli and Björn Leder and Marina Marinkovic and Stefan Schaefer and Rainer Sommer and Francesco Virotta},
journal= {arXiv preprint arXiv:1205.5380},
year = {2015}
}
Comments
46 pages, 11 figures, v2: minor corrections, results unchanged