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paper

Fermion masses and symmetry breaking of a U(2) flavour symmetry

arXiv:hep-ph/9812239 · doi:10.1016/S0550-3213(99)00195-9

Abstract

We show how a specific sequential breaking pattern of a U(2) flavour symmetry occurs automatically in a broad framework. The relative orientation in U(2) space of the spurion fields that breaks the U(2) symmetry is uniquely fixed, thus determining the form of the fermion mass matrices in a predictive way.

9 pages, uses amsmath.sty