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. 2010 Apr 2;104(13):132003.
doi: 10.1103/PhysRevLett.104.132003. Epub 2010 Mar 31.

Precise charm to strange mass ratio and light quark masses from full lattice QCD

C T H Davies  1 , C McNeile, K Y Wong, E Follana, R Horgan, K Hornbostel, G P Lepage, J Shigemitsu, H Trottier; HPQCD Collaboration
Affiliations

Precise charm to strange mass ratio and light quark masses from full lattice QCD

C T H Davies et al. Phys Rev Lett. .

Abstract

By using a single formalism to handle charm, strange, and light valence quarks in full lattice QCD for the first time, we are able to determine ratios of quark masses to 1%. For m(c)/m(s) we obtain 11.85(16), an order of magnitude more precise than the current PDG average. Combined with 1% determinations of the charm quark mass now possible this gives m(s)(2 GeV)=92.4(1.5) MeV. The MILC result for m(s)/m(l)=27.2(3) yields m(l)(2 GeV)=3.40(7) MeV for the average of u and d quark masses.

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