Recent Lattice Results on the Light Quark Masses

Details Recent Lattice Results on the Light Quark Masses Recent Lattice Results on the Light Quark Masses

1996-09-05

arxiv.org/abs/hep-ph/9609261v1

Nucl.Phys.Proc.Suppl.53:23-29,1997

Physics

High Energy Physics

High Energy Physics - Phenomenology

7 pages, 4 embedded figures. Plenary talk given at LATTICE96

Scientific paper

10.1016/S0920-5632(96)00596-8

I discuss old and new determinations of the light quark masses using lattice QCD. Most lattice results using various approximations can be fit together in a simple picture which is consistent with lower values than conventionally supposed: in the quenched approximation for the strange quark mass in the MS bar scheme, m_s(2 GeV) = 95 (16) MeV, and for the average of the u and d quark masses, m_l(2 GeV) = 3.6 (6) MeV. An estimate of the effects of light quark loops yields answers lower still: m_s(2 GeV) in the range 54 - 92 MeV, and m_l(2 GeV) in the range 2.1 - 3.5 MeV.

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