Trimaximal mixing with predicted θ_13 from a new type of constrained sequential dominance

Details Trimaximal mixing with predicted θ_13 from a new type of constrained sequential dominance Trimaximal mixing with predicted θ_13 from a new type of constrained sequential dominance

2011-08-22

arxiv.org/abs/1108.4278v3

Physics

High Energy Physics

High Energy Physics - Phenomenology

13 pages, 2 figures; version to appear in Nuclear Physics B

Scientific paper

10.1016/j.nuclphysb.2011.11.009

Following the recent T2K indication of a sizeable reactor angle, we present a class of models which fix \theta_{13} while preserving trimaximal solar mixing. The models are based on a new type of constrained sequential dominance involving new vacuum alignments, along the (1,2,0)^T or (1,0,2)^T directions in flavour space. We show that such alignments are easily achieved using orthogonality, and may replace the role of the subdominant flavon alignment (1,1,1)^T in constrained sequential dominance. In such models, with a normal hierarchical spectrum, the reactor angle is related to a ratio of neutrino masses by \theta_{13} = \frac{\sqrt{2}}{3}\frac{m^\nu_2}{m^\nu_3}, leading to \theta_{13} \sim 5^\circ - 6^\circ, while the atmospheric angle is given by the sum rule \theta_{23} \approx 45^\circ + \sqrt{2} \theta_{13} \cos \delta. We find that leptogenesis is unsuppressed due to the violation of form dominance and that the CP violating phase responsible for leptogenesis is precisely equal to the Dirac CP phase \delta, providing a direct link between leptogenesis and neutrino mixing in this class of models.

Affiliated with

Also associated with

No associations

Rating

Trimaximal mixing with predicted θ_13 from a new type of constrained sequential dominance does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Trimaximal mixing with predicted θ_13 from a new type of constrained sequential dominance, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Trimaximal mixing with predicted θ_13 from a new type of constrained sequential dominance will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-175888