A light pseudoscalar in a model with lepton family symmetry O(2)

Autor(en)

Walter Grimus, Luis Lavoura, David Neubauer

Abstrakt

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(en)

Teilchenphysik

Externe Organisation(en)

Universidade Técnica de Lisboa

Journal

Journal of High Energy Physics

Band

2008

Anzahl der Seiten

20

ISSN

1029-8479

DOI

https://doi.org/10.1088/1126-6708/2008/07/051

Publikationsdatum

2008

Peer-reviewed

Ja

ÖFOS 2012

103036 Theoretische Physik

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/276e60e7-4f3b-44c2-9909-0c2b79e8cf88