Determination of Light and Strange Quark Masses from Full Lattice QCD

Göckeler, M.; Horsley, R.; Irving, A. C.; Pleiter, D.; Rakow, P. E. L.; Schierholz, G.; Stüben, H.

Determination of Light and Strange Quark Masses from Full Lattice QCD

Authors

Description

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.
7 pages, 8 figures