Ambiguities in the up quark mass

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dc.creatorCreutz, Michael
dc.date2003-12-16
dc.date2004-03-04
dc.date.accessioned2026-07-07T10:29:02Z
dc.date.available2026-07-07T10:29:02Z
dc.descriptionIt has long been known that no physical singularity is encountered as up quark mass is adjusted from small positive to negative values as long as all other quarks remain massive. This is tied to an additive ambiguity in the definition of the quark mass. This calls into question the acceptability of attempts to solve the strong CP problem via a vanishing mass for the lightest quark.
dc.description9 pages, 1 figure. Revision as will appear in Physical Review Letters. Simplified renormalization group discussion and title change requested by PRL
dc.identifierhttps://arxiv.org/abs/hep-ph/0312225
dc.identifierhttp://arxiv.org/abs/hep-ph/0312225
dc.identifierPhys.Rev.Lett.92:162003,2004
dc.identifierdoi:10.1103/PhysRevLett.92.162003
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/177658
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectHigh Energy Physics - Lattice
dc.titleAmbiguities in the up quark mass
dc.typetext

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