A4 flavor symmetry model for Dirac neutrinos and sizable Ue3

Nina Memenga, Werner Rodejohann, and He Zhang
Phys. Rev. D 87, 053021 – Published 26 March 2013

Abstract

Models based on flavor symmetries are the most often studied approaches to explain the unexpected structure of lepton mixing. In many flavor symmetry groups a product of two triplet representations contains a symmetric and an antisymmetric contraction to a triplet. If this product of two triplets corresponds to a Majorana mass term, then the antisymmetric part vanishes, and in economic models tribimaximal mixing is achieved. If neutrinos are Dirac particles, the antisymmetric part is, however, present and leads to deviations from tribimaximal mixing, in particular, nonzero Ue3. Thus, the nonvanishing value of Ue3 and the nature of the neutrino are connected. We illustrate this with a model based on A4 within the framework of a neutrinophilic two Higgs doublet scenario.

  • Figure
  • Figure
  • Received 19 January 2013

DOI:https://doi.org/10.1103/PhysRevD.87.053021

© 2013 American Physical Society

Authors & Affiliations

Nina Memenga*, Werner Rodejohann, and He Zhang

  • Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany

  • *nina.memenga@gmx.de
  • werner.rodejohann@mpi-hd.mpg.de
  • he.zhang@mpi-hd.mpg.de

Article Text (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand
Issue

Vol. 87, Iss. 5 — 1 March 2013

Reuse & Permissions
Access Options
Author publication services for translation and copyediting assistance advertisement

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review D

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×