Finite Symmetry of Leptonic Mass Matrices

Abstract

We search for possible symmetries present in the leptonic mixing data from SU(3) subgroups of order up to 511. Theoretical results based on symmetry are compared with global fits of experimental data in a chi-squared analysis, yielding the following results. There is no longer a group that can produce all the mixing data without a free parameter, but a number of them can accommodate the first or the second column of the mixing matrix. The only group that fits the third column is $\Delta (150)$. It predicts ${\sin }^{2}2{\theta }_{13}=0.11$ and ${\sin }^{2}2{\theta }_{23}=0.94$, in good agreement with experimental results.

Version to appear in Physical Review D

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