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

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dc.creatorGrimus, W.
dc.creatorLavoura, L.
dc.creatorNeubauer, D.
dc.date2008-05-08
dc.date2008-06-24
dc.date.accessioned2026-07-07T12:24:15Z
dc.date.available2026-07-07T12:24:15Z
dc.descriptionWe 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 mu-tau interchange symmetry, enforcing--at tree level--maximal atmospheric neutrino mixing and a vanishing mixing angle theta_13. The small ratio m_mu/m_tau (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.
dc.description20 pages, 2 figures; two footnotes and one reference added, final version for JHEP
dc.identifierhttps://arxiv.org/abs/0805.1175
dc.identifierhttp://arxiv.org/abs/0805.1175
dc.identifierJHEP 0807:051,2008
dc.identifierdoi:10.1088/1126-6708/2008/07/051
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/214262
dc.subjectHigh Energy Physics - Phenomenology
dc.titleA light pseudoscalar in a model with lepton family symmetry O(2)
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