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Symmetries, Large Leptonic Mixing and a Fourth Generation
We show that large leptonic mixing occurs most naturally in the framework of the Sandard Model just by adding a fourth generation. One can then construct a small $Z_4$ discrete symmetry, instead of the large $S_{4L}\times S_{4R}$, which requires that the neutrino as well as the charged lepton mass m...
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| Lenguaje: | eng |
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2002
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| Acceso en línea: | https://dx.doi.org/10.1088/1126-6708/2002/12/036 http://cds.cern.ch/record/547822 |