Comment on "Ambiguities in the Up-Quark Mass"

Abstract

Creutz [hep-ph/0312225] has argued that nonperturbative effects in QCD lead to an additive ambiguity in the up quark mass, and that "this calls into question the acceptability of attempts to solve the strong CP problem via a vanishing mass for the lightest quark." We show that if the determinant of the light quark mass matrix vanishes at any scale, then it is real at all scales.

1 page; v2 is the published version

Cited by in corpus (7)

• CPT-Symmetric Universe
• Instanton Effects in Three Flavor QCD
• The 't Hooft vertex revisited
• Novel loop-diagrammatic approach to QCD $\theta$ parameter and application to the left-right model
• The Super-Planckian Axion Strikes Back
• Strong CP, Up-Quark Mass, and the Randall-Sundrum Microscope
• Implications of Neutrino Mass Generation from QCD Confinement