Light quark masses from the lattice
M. Gockeler, R. Horsley, B. Klaus, W. Kurzinger, H. Oelrich, D. Petters, D. Pleiter, P. E. L. Rakow, G. Schierholz, P. Stephenson
Abstract
A completely non-perturbative estimate is given for the u/d and strange quark masses in quenched QCD using O(a) improved fermions and, for comparison, Wilson fermions. For improved fermions we find mu/dMSbar(μ=2 GeV) = 4.4(2) MeV, msMSbar(μ=2 GeV) = 105(4) MeV when using r0 to set the physical scale.
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