Extending the symmetries of the standard model

We discuss the possibilities for determining the parameters of the Standard Model by extending its symmetries. Supersymmetry combined with a stage of unification is capable of determining the magnitude of the gauge couplings and explaining the pattern of spontaneous breaking. We consider how further...

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Bibliographic Details
Main Author: Ross, G
Format: Conference item
Published: 1996
Description
Summary:We discuss the possibilities for determining the parameters of the Standard Model by extending its symmetries. Supersymmetry combined with a stage of unification is capable of determining the magnitude of the gauge couplings and explaining the pattern of spontaneous breaking. We consider how further family symmetries may determine the qualitative structure of the fermion masses and mixing angles. Finally we explore the possibility that the dynamics of the low-energy theory may determine the magnitude of the Yukawa couplings via its fixed point structure and hence give a complete theory of the fermion masses.