We present the final results of the CP-PACS calculation of the light hadron spectrum and quark masses with two flavors of dynamical quarks. Simulations are made with a renormalization-group improved gauge action and a mean-field improved clover quark action for sea quark masses corresponding to mPS/mV≈0.8--0.6 and the lattice spacing a=0.22--0.11 fm. For the meson spectrum in the continuum limit a clearly improved agreement with experiment is observed compared to the quenched case, demonstrating the importance of sea quark effects. For light quark masses we obtain mudMSˉ(2GeV)=3.44−0.22+0.14 MeV and msMSˉ(2GeV)=88−6+4 MeV (K-input) and msMSˉ(2GeV)=90−11+5 MeV (ϕ-input), which are reduced by about 25% compared to the values in quenched QCD.
@article{arxiv.hep-lat/0010078,
title = {Full QCD Light Hadron Spectrum and Quark Masses: Final Results from CP-PACS},
author = {PACS Collaboration and A. Ali Khan and S. Aoki and G. Boyd and R. Burkhalter and S. Ejiri and M. Fukugita and S. Hashimoto and N. Ishizuka and Y. Iwasaki and K. Kanaya and T. Kaneko and Y. Kuramashi and T. Manke and K. Nagai and M. Okawa and H. P. Shanahan and A. Ukawa and T. Yoshie},
journal= {arXiv preprint arXiv:hep-lat/0010078},
year = {2012}
}