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Missing (up) Mass, Accidental Anomalous Symmetries, and the Strong CP Problem

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arxiv hep-ph/9403203 v1 pith:NORUNCUA submitted 1994-03-01 hep-ph

Tom Banks , Yosef Nir , Nathan Seiberg This is my paper
classification hep-ph
keywords problemstrongaccidentalanomalousmassmasslessquarksymmetry
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abstract

We reconsider the massless up quark solution of the strong CP problem. We show that an anomaly free horizontal symmetry can naturally lead to a massless up quark and to a corresponding accidental anomalous symmetry. Reviewing the controversy about the phenomenological viability of $m_u=0$ we conclude that this possiblity is still open and can solve the strong CP problem. To appear in the Proceedings of The Yukawa Couplings and the Origins of Mass Workshop.

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Cited by 3 Pith papers

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