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Determination of Light and Strange Quark Masses from Full Lattice QCD

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arxiv hep-ph/0409312 v1 pith:GJGSXD7Y submitted 2004-09-28 hep-ph hep-lat

classification hep-phhep-lat
keywords massesquarklightfulllatticestrangebarecompute
verification ladder T0 review T1 audit T2 compute T3 formal
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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.

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