Maximal Neutrino Mixing from an Attractive Infrared Fixed Point

Details Maximal Neutrino Mixing from an Attractive Infrared Fixed Point Maximal Neutrino Mixing from an Attractive Infrared Fixed Point

2001-08-16

arxiv.org/abs/hep-ph/0108137v1

Phys.Lett. B520 (2001) 279-288

Physics

High Energy Physics

High Energy Physics - Phenomenology

16 pages

Scientific paper

10.1016/S0370-2693(01)01169-8

In the Standard Model (and MSSM), renormalization effects on neutrino mixing are generally very small and the attractive fixed points are at vanishing neutrino mixing. However for multi-higgs extensions of the Standard Model, renormalization effects on neutrino mixing can be large and nontrivial fixed points are possible. Here we examine a simple two-higgs model. For two flavors, maximal mixing is an attractive infrared fixed point. For three flavors, the neutrino mass matrix evolves towards large off-diagonal elements at low energies. The experimentally suggested bimaximal neutrino mixing pattern is one possible attractive infrared fixed point.

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