We present a QCD sum rule calculation of the strange-quark mass including four-loop QCD corrections to the correlator of scalar currents. We obtain mˉs(1 GeV)=205.5±19.1 MeV.
@article{arxiv.hep-ph/9612394,
title = {Order-$\alpha_s^3$ determination of the strange quark mass},
author = {K. G. Chetyrkin and D. Pirjol and K. Schilcher},
journal= {arXiv preprint arXiv:hep-ph/9612394},
year = {2008}
}
Comments
14 pages LaTex with 2 figures. Updated version including the recently computed 4-loop beta and gamma functions