Tri-bimaximal lepton mixing from symmetry only

Autor(en)
Walter Grimus, Luis Lavoura
Abstrakt

We construct a model for tri-bimaximal lepton mixing which employs only family symmetries and their soft breaking; neither vacuum alignment nor supersymmetry, extra dimensions, or non-renormalizable terms are used in our model. It is an extension of the Standard Model making use of the seesaw mechanism with five right-handed neutrino singlets. The scalar sector comprises four Higgs doublets and one complex gauge singlet. The horizontal symmetry of our model is based on the permutation group S3 of the lepton families together with the three family lepton numbers—united this constitutes a symmetry group ?(6?2). The model makes no predictions for the neutrino masses.

Organisation(en)
Teilchenphysik
Externe Organisation(en)
Universidade Técnica de Lisboa
Journal
Journal of High Energy Physics
Band
2009
Anzahl der Seiten
15
ISSN
1029-8479
DOI
https://doi.org/10.1088/1126-6708/2009/04/013
Publikationsdatum
2009
Peer-reviewed
Ja
ÖFOS 2012
103036 Theoretische Physik
Link zum Portal
https://ucrisportal.univie.ac.at/de/publications/tribimaximal-lepton-mixing-from-symmetry-only(379f6093-4f0b-4ccf-bdae-7250c5544cd8).html