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Minimal seesaw model with [formula omitted] flavor symmetry

Authors
Journal
Physics Letters B
0370-2693
Publisher
Elsevier
Publication Date
Volume
700
Issue
5
Identifiers
DOI: 10.1016/j.physletb.2011.05.014
Keywords
  • Phenomenology
Disciplines
  • Physics

Abstract

Abstract We discuss a neutrino mass model based on the S4 flavor symmetry within the minimal seesaw framework, in which only two right-handed neutrinos are introduced and transform as 2 under S4. Although the model contains less free parameters compared to the typical seesaw models, it provides a successful description of the observed neutrino parameters, and in particular, a nearly tri-bimaximal mixing pattern can be naturally accommodated. In addition, the heavy right-handed neutrino masses are found to be non-degenerate, while only the normal hierarchical mass spectrum is compatible with experiments for light neutrinos.

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