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Título: | On the description of nonunitary neutrino mixing |
Autor: | Escrihuela Ferrándiz, Francisco Javier; Vanegas Forero, David; Miranda, O.G.; Tórtola, María Amparo CSIC ORCID; Valle, José W. F. CSIC ORCID | Palabras clave: | Double beta decay Heavy majorana neutrinos |
Fecha de publicación: | 17-sep-2015 | Editor: | American Physical Society | Citación: | Physical Review - Section D - Particles and Fields 92 (5): 053009 - 16 (2015) | Resumen: | Neutrino oscillations are well established and the relevant parameters determined with good precision, except for the CP phase, in terms of a unitary lepton mixing matrix. Seesaw extensions of the Standard Model predict unitarity deviations due to the admixture of heavy isosinglet neutrinos. We provide a complete description of the unitarity and universality deviations in the light-neutrino sector. Neutrino oscillation experiments involving electron or muon neutrinos and antineutrinos are fully described in terms of just three new real parameters and a new CP phase, in addition to the ones describing oscillations with unitary mixing. Using this formalism we describe the implications of nonunitarity for neutrino oscillations and summarize the model-independent constraints on heavy-neutrino couplings that arise from current experiments. | Descripción: | 28 pages.- 8 figures.- typos corrected.- modified bounds on non-unitarity parameters.- new figs 3 and 4 | Versión del editor: | http://dx.doi.org/10.1103/PhysRevD.92.053009 | URI: | http://hdl.handle.net/10261/131026 | DOI: | 10.1103/PhysRevD.92.053009 | ISSN: | 1550-7998 | E-ISSN: | 1550-2368 |
Aparece en las colecciones: | (IFIC) Artículos |
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FPA2014-58183-P-On the description.pdf | 636,09 kB | Adobe PDF | Visualizar/Abrir |
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