Models of Supersymmetric $U(2)\times U(1)$ Flavor Symmetry

Details Models of Supersymmetric $U(2)\times U(1)$ Flavor Symmetry Models of Supersymmetric $U(2)\times U(1)$ Flavor Symmetry

1998-07-09

arxiv.org/abs/hep-ph/9807308v2

Phys.Lett. B441 (1998) 191-197

Physics

High Energy Physics

High Energy Physics - Phenomenology

12 pages, LaTeX, typos corrected in eqs. 28,40

Scientific paper

10.1016/S0370-2693(98)01154-X

We use a $U(2)\times U(1)$ horizontal symmetry in order to construct supersymmetric models where the flavor structure of both quarks and leptons is induced naturally. The supersymmetric flavor changing neutral currents problem is solved by the degeneracy between sfermions induced by the U(2) symmetry. The additional U(1) enables the generation of mass ratios that cannot be generated by U(2) alone. The resulting phenomenology differs from that of models with either abelian or $U(2)\times GUT$ symmetries. Our models give rise to interesting neutrino spectra, which can incorporate the Super-Kamiokande results regarding atmospheric neutrinos.

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