Eur. Phys. J. C 70, 1099-1110 (2010)
https://doi.org/10.1140/epjc/s10052-010-1492-2

Possible alternatives to tri-bimaximal mixing

¹ Department of Physics, Northern Illinois University, DeKalb, IL, 60115, USA
² Fermi National Accelerator Laboratory, Batavia, IL, 60510, USA
³ Max-Planck-Institut für Kernphysik, Postfach 103980, 69029, Heidelberg, Germany

alexander.dueck@mpi-hd.mpg.de

Received: 19 July 2010
Published online: 20 November 2010

Abstract

Possible alternatives to tri-bimaximal mixing are presented based on other symmetry principles, and their predictions for |U _e3|, sin ² θ ₁₂ and sin ² θ ₂₃ are compared to the present neutrino mixing data. In some cases perturbations are required to give better agreement with the data, and the use of a minimal approach is illustrated. Precise experimental determinations of the mixing parameters will be required to decipher the correct mixing pattern and to pin down the appropriate flavor symmetry.