(S)quark masses and non-Abelian horizontal symmetries

We present a model of quark and squark masses which is based on a non-Abelian horizontal symmetry. It leads to order of magnitude relations between quark mass ratios and mixing angles and to the successful exact relation sin θ C = m d m s to better than 20% accuracy. The non-Abelian symmetry also en...

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Bibliographic Details
Published in:Physics letters. B 1993-11, Vol.318 (1), p.169-173
Main Authors: Pouliot, Philippe, Seiberg, Nathan
Format: Article
Language:English
Subjects:
Electroweak interactions
Exact sciences and technology
Physics
Quark and lepton masses and mixing
Specific theories and interaction models
particle systematics
The physics of elementary particles and fields
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Summary:We present a model of quark and squark masses which is based on a non-Abelian horizontal symmetry. It leads to order of magnitude relations between quark mass ratios and mixing angles and to the successful exact relation sin θ C = m d m s to better than 20% accuracy. The non-Abelian symmetry also ensures the necessary squark degeneracy to suppress FCNC mediated by loops with squarks and gluinos, in the neutral meson systems.
ISSN:0370-2693
1873-2445
DOI:10.1016/0370-2693(93)91801-S