Possible alternatives to tri-bimaximal mixing
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
Published online: 20 November 2010
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.
© Springer-Verlag / Società Italiana di Fisica, 2010