a Department of Physics, University of Alaska, Anchorage, AK 99508, USA
b Department of Physics, Purdue University, West Lafayette, IN 47907, USA
c Institute of Theoretical Science, University of Oregon, Eugene, OR 97403, USA
Abstract:
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.