Is U(1)_H a Good Family Symmetry?
classification
✦ hep-ph
keywords
otimessymmetryableanalyzecandidatescontextelementary-fermionexperimental
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We analyze U(1)$_H$ as a horizontal symmetry and its possibilities to explain the known elementary-fermion masses. We find that only two candidates, in the context of SU(3)$_c\otimes$SU(2)$_L\otimes$U(1)$_Y\otimes$U(1)$_H$ nonsupersymmetric, are able to fit the experimental result m$_b<<$m$_t$.
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