Determination of Light and Strange Quark Masses from Full Lattice QCD
  We compute the light and strange quark masses m_l = (m_u+m_d)/2 and m_s, respectively, in full lattice QCD with N_f=2 flavors of light dynamical quarks. The renormalization constants, which convert bare quark masses into renormalized quark masses, are computed nonperturbatively, including the effect of quark-line disconnected diagrams. We obtain m_l=4.7(2)(3) MeV and m_s=119(5)(8) MeV in the MSbar scheme at the scale 2 GeV. 
M. G\"ockeler, R. Horsley, A.C. Irving, D. Pleiter, P.E.L. Rakow, G.   Schierholz and H. St\"uben