Deviations from tri-bimaximal mixing

Abstract

Current data indicates that lepton mixing is very close to the tri-bimaximal mixing scenario. In general, however, one expects deviations from any mixing scenario. We discuss several examples to perturb tri-bimaximal mixing, namely soft breaking, renormalization group running and charged lepton corrections. We also present a convenient parametrization of the PMNS matrix which takes advantage of the apparently close to tri-bimaximal mixing pattern. Finally, it is discussed how to generate values of U_{e3} which correspond to the recently found hint for non-zero U_{e3}.

3 pages. Talk given at NOW2008, Conca Specchiulla, Otranto, Italy, September 6-13, 2008

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Cited by in corpus (9)

• Parametrizing the lepton mixing matrix in terms of deviations from tri-bimaximal mixing
• Tri-bimaximal Neutrino Mixing and ${\theta }_{13}$
• Large U_{e3} and Tri-bimaximal Mixing
• Perturbative Estimates of Lepton Mixing Angles in Unified Models
• Vacuum misalignment corrections to tri-bimaximal mixing and form dominance
• Intrinsic Deviation from the Tri-bimaximal Neutrino Mixing in a Class of A_4 Flavor Models
• Quasi-degenerate neutrinos and tri-bi-maximal mixing
• Neutrino phenomenology in the flavored NMSSM without domain wall problems
• SUSY SU(5) $\times S_4$ GUT Flavor Model for Fermion Masses and Mixings with Adjoint, Large ${\theta }_{13}^{PMNS}$