Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8192781 | Physics Letters B | 2011 | 4 Pages |
Abstract
It is well known that the tri-bimaximal neutrino mixing pattern V0 can be derived from a class of flavor models with the non-Abelian A4 symmetry. We point out that small corrections to V0, which are inherent in the A4 models and arise from both the charged-lepton and neutrino sectors, have been omitted in the previous works. We show that such corrections may lead the 3Ã3 neutrino mixing matrix V to a non-unitary deviation from V0, but they cannot result in a nonzero value of θ13 or any new CP-violating phases. Current experimental constraints on the unitarity of V allow us to constrain the model parameters to some extent.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Nuclear and High Energy Physics
Authors
Takeshi Araki, Jianwei Mei, Zhi-zhong Xing,