A light pseudoscalar in a model with lepton family symmetry O(2)
- Author(s)
- Walter Grimus, Luis Lavoura, David Neubauer
- Abstract
We discuss a realization of the non-abelian group O(2) as a family symmetry for the lepton sector. The reflection contained in O(2) acts as a ?-? interchange symmetry, enforcing—at tree level—maximal atmospheric neutrino mixing and a vanishing mixing angle ?13. The small ratio m?/m? (muon over tau mass) gives rise to a suppression factor in the mass of one of the pseudoscalars of the model. We argue that such a light pseudoscalar does not violate any experimental constraint.
- Organisation(s)
- Particle Physics
- External organisation(s)
- Universidade Técnica de Lisboa
- Journal
- Journal of High Energy Physics
- Volume
- 2008
- No. of pages
- 20
- ISSN
- 1029-8479
- DOI
- https://doi.org/10.1088/1126-6708/2008/07/051
- Publication date
- 2008
- Peer reviewed
- Yes
- Austrian Fields of Science 2012
- 103036 Theoretical physics
- Portal url
- https://ucrisportal.univie.ac.at/en/publications/a-light-pseudoscalar-in-a-model-with-lepton-family-symmetry-o2(276e60e7-4f3b-44c2-9909-0c2b79e8cf88).html