Neutrino masses and $μ$ terms in a supersymmetric extra U(1) model

Details Neutrino masses and $μ$ terms in a supersymmetric extra U(1) model Neutrino masses and $μ$ terms in a supersymmetric extra U(1) model

2009-10-16

arxiv.org/abs/0910.3086v2

Int. J. Mod. Phys. A, Vol. 25, No. 21, 4033-4053 (2010)

Physics

High Energy Physics

High Energy Physics - Phenomenology

27 pages, 2 figures, final version for publication

Scientific paper

10.1142/S0217751X1005024X

We propose a supersymmetric extra U(1) model, which can generate small neutrino masses and necessary $\mu$ terms, simultaneously. Fields including quarks and leptons are embedded in three ${\bf 27}$s of $E_6$ in a different way among generations. The model has an extra U(1) gauge symmetry at TeV regions, which has discriminating features from other models studied previously. Since a neutrino mass matrix induced in the model has a constrained texture with limited parameters, it can give a prediction. If we impose neutrino oscillation data to fix those parameters, a value of $\sin\theta_{13}$ can be determined. We also discuss several phenomenological features which are discriminated from the ones of the MSSM.

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