Autor:	Grimus, W., Lavoura, L., Neubauer, D.
Rok vydání:	2008
Předmět:	High Energy Physics - Phenomenology
Zdroj:	JHEP 0807:051,2008
Druh dokumentu:	Working Paper
DOI:	10.1088/1126-6708/2008/07/051
Popis:	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 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. Comment: 20 pages, 2 figures; two footnotes and one reference added, final version for JHEP
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/0805.1175 Zobrazit plný text záznamu View this record from Arxiv