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Radiative corrections and explicit perturbations to the tetra-maximal neutrino mixing with large θ13

MPS-Authors
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Zhang,  He
Werner Rodejohann - ERC Starting Grant, Junior Research Groups, MPI for Nuclear Physics, Max Planck Society;

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1107.1097
(Preprint), 224KB

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There is no public supplementary material available
Citation

Zhang, H., & Zhou, S. (2011). Radiative corrections and explicit perturbations to the tetra-maximal neutrino mixing with large θ13. Physics Letters B, 704(4), 296-302. doi:10.1016/j.physletb.2011.09.033.


Cite as: http://hdl.handle.net/11858/00-001M-0000-000E-F545-B
Abstract
The tetra-maximal neutrino mixing pattern predicts a relatively large reactor mixing angle theta_13 \approx 8.4^\circ, which is in good agreement with the latest best-fit value theta_13 = 9^\circ. However, its prediction for theta_12 \approx 30.4^\circ is inconsistent with current oscillation data at the 3sigma C.L. We show that explicit perturbations to the tetra-maximal mixing can naturally enhance theta_12 to its best-fit value theta_12 = 34^\circ. Furthermore, we demonstrate that if the tetra-maximal mixing is produced by a certain flavor symmetry at a high-energy scale Lambda = 10^14 GeV, significant radiative corrections in the minimal supersymmetric standard model can modify theta_12 to be compatible with experimental data at the electroweak scale Lambda_EW = 10^2 GeV. The predictions for theta_13 \approx 8.4^\circ and theta_23 = 45^\circ, as well as the CP-violating phases rho = sigma = -delta = 90^\ciic, are rather stable against radiative corrections.