Abstract
Recently T2K experiment gives hint in favor of large reactor angle . Most of the models, with tribimaximal mixing at the leading order, can not reproduce such a large mixing angle since they predict typically corrections for the reactor angle of the order , where . In this paper, we discuss the possibility to achieve large within the T2K region with maximal atmospheric mixing angle, , and trimaximal solar mixing angle, , through the deviation from the exact tribimaximal mixing. We derive the structure of neutrino mass matrix that leads to the large leaving maximal and trimaximal . It is shown that such a structure of neutrino mass matrix can arise in a model with flavor symmetry.
- Received 13 July 2011
DOI:https://doi.org/10.1103/PhysRevD.84.053002
© 2011 American Physical Society