title: Precise charm to strange mass ratio and light quark masses from full lattice QCD.
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.
authors.affiliation: Department of Physics and Astronomy, University of Glasgow, Glasgow, G12 8QQ, United Kingdom. c.davies@physics.gla.ac.uk
authors.forename: C T H
authors.initials: CT
authors.lastname: Davies
authors.forename: C
authors.initials: C
authors.lastname: McNeile
authors.forename: K Y
authors.initials: KY
authors.lastname: Wong
authors.forename: E
authors.initials: E
authors.lastname: Follana
authors.forename: R
authors.initials: R
authors.lastname: Horgan
authors.forename: K
authors.initials: K
authors.lastname: Hornbostel
authors.forename: G P
authors.initials: GP
authors.lastname: Lepage
authors.forename: J
authors.initials: J
authors.lastname: Shigemitsu
authors.forename: H
authors.initials: H
authors.lastname: Trottier