Quark masses and strong CP violation
arXiv:1011.0908 · doi:10.1063/1.3575115
Abstract
Two flavor QCD involves three independent mass parameters for which non-perturbative effects are not universal. This precludes matching lattice and perturbative results for non-degenerate quarks and eliminates a vanishing up quark mass as a viable solution to the strong CP problem.
1 page, 1 figure; poster contribution to the conference "Quark confinement and the hadron spectrum IX," August 30 - September 10, 2010