The Problem of Large Leptonic Mixing

Details The Problem of Large Leptonic Mixing The Problem of Large Leptonic Mixing

2002-04-04

arxiv.org/abs/hep-ph/0204051v2

JHEP 0307 (2003) 012

Physics

High Energy Physics

High Energy Physics - Phenomenology

RevTeX, 4 pages, no figures

Scientific paper

10.1088/1126-6708/2003/07/012

Unlike in the quark sector where simple $S_3$ permutation symmetries can generate the general features of quark masses and mixings, we find it impossible (under conditions of hierarchy for the charged leptons and without considering the see-saw mechanism or a more elaborate extension of the SM) to guarantee large leptonic mixing angles with any general symmetry or transformation of only known particles. If such symmetries exist, they must be realized in more extended scenarios.

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