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 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 . The MILC result for yields for the average of and quark masses.
- Received 19 October 2009
DOI:https://doi.org/10.1103/PhysRevLett.104.132003
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