Low-Energy Predictions of Lopsided Family Charges

Details Low-Energy Predictions of Lopsided Family Charges Low-Energy Predictions of Lopsided Family Charges

2000-09-18

arxiv.org/abs/hep-ph/0009205v2

Phys.Lett. B493 (2000) 356-365

Physics

High Energy Physics

High Energy Physics - Phenomenology

14 pages,11 figures, Several discussions are sophisticated

Scientific paper

10.1016/S0370-2693(00)01153-9

We consider the Froggatt-Nielsen (FN) mechanism reproducing the observed mass hierarchies and mixing angles for quarks and leptons. The large $\nu_\mu $-$ \nu_\tau$ mixing suggested from recent Superkamiokande experiments on the atmospheric neutrinos implies lopsided FN U(1) charges for the lepton doublets. There are two possible charge assignments to generate the large $\nu_\mu$-$ \nu_\tau$ mixing. We point out that the two models with different charge assignments have distinct low-energy predictions and hence they are distinguishable in future neutrino experiments on such as CP violation and $2\beta 0\nu$ decay.

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