Flavor Symmetry L_mu - L_tau and quasi-degenerate Neutrinos

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dc.creatorRodejohann, W.
dc.creatorSchmidt, M. A.
dc.date2005-07-26
dc.date.accessioned2026-07-07T06:33:58Z
dc.date.available2026-07-07T06:33:58Z
dc.descriptionCurrent data implies three simple forms of the neutrino mass matrix, each corresponding to the conservation of a non-standard lepton charge. While models based on L_e and L_e - L_mu - L_tau are well-known, little attention has been paid to L_mu - L_tau. A low energy mass matrix conserving L_mu - L_tau implies quasi-degenerate light neutrinos. Moreover, it is mu-tau symmetric and therefore (in contrast to L_e and L_e - L_mu - L_tau) automatically predicts maximal atmospheric neutrino mixing and zero U_{e3}. A see-saw model based on L_mu - L_tau is investigated and testable predictions for the neutrino mixing observables are given. Renormalization group running below and in between the see-saw scales is taken into account in our analysis, both numerically and analytically.
dc.description15 pages, 2 figures. Prepared for 5th International Conference on Nonaccelerator New Physics (NANP 05), Dubna, Russia, 20-25 Jun 2005
dc.identifierhttps://arxiv.org/abs/hep-ph/0507300
dc.identifierhttp://arxiv.org/abs/hep-ph/0507300
dc.identifierPhys.Atom.Nucl. 69 (2006) 1833-1841
dc.identifierdoi:10.1134/S1063778806110056
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/99372
dc.subjectHigh Energy Physics - Phenomenology
dc.titleFlavor Symmetry L_mu - L_tau and quasi-degenerate Neutrinos
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