Orateur
Dr
Akin Wingerter
(LPSC)
Description
Current experimental data on the neutrino parameters is in good
agreement with tribimaximal mixing and may indicate the presence of an
underlying family symmetry. For 76 flavor groups, we perform a
systematic scan for models: The particle content is that of the
Standard Model plus up to three flavon fields, and the effective
Lagrangian contains all terms of mass dimension <=6. We find that 44
groups can accommodate models that are consistent with experiment at
3sigma, and 38 groups can have models that are tribimaximal. For
A4xZ3, T7 and T13 we look at correlations between the mixing angles
and make a prediction for theta13 that will be testable in the near
future. We present the details of a model with theta12=33.9,
theta23=40.9, theta13=5.1 to show that the recent tentative hints of a
non-zero theta13 can easily be accommodated. The smallest group for
which we find tribimaximal mixing is T7. We argue that T7 and T13 are
as suited to produce tribimaximal mixing as A4 and should therefore be
considered on equal footing.
Auteur principal
Dr
Akin Wingerter
(LPSC)
