@article{oai:niigata-u.repo.nii.ac.jp:00002484, author = {Khan, A.Ali and Aoki, S. and Boyd, G. and Burkhalter, R. and Ejiri, S. and Fukugita, M. and Hashimoto, S. and Ishizuka, N. and Iwasaki, Y. and Kanaya, K. and Kaneko, T. and Kuramashi, Y. and Manke, T. and Nagai, K. and Okawa, M. and Shanahan, H.P. and Ukawa, A. and Yoshie, T. and CP-PACS, Collaboration}, issue = {22}, journal = {Physical Review Letters, Physical Review Letters}, month = {Nov}, note = {Light quark masses are calculated in lattice QCD with two degenerate flavors of dynamical quarks. The calculations are made with improved actions with lattice spacing a=0.22 –0.11 fm. In the continuum limit we find m MS ¯ ud (2GeV)=3.44 +0.14 −0.22 MeV using the π and ρ meson masses as physical input, and m MS ¯ s (2GeV)=88 +4 −6 MeV or 90 +5 −11 MeV with the K or φ meson mass as additional input. The quoted errors represent statistical and systematic combined, the latter including those from continuum and chiral extrapolations, and from renormalization factors. Compared to quenched results, two flavors of dynamical quarks reduce quark masses by about 25% .}, pages = {4674--4677}, title = {Dynamical Quark Effects on Light Quark Masses}, volume = {85}, year = {2000} }