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On the description of nonunitary neutrino mixing
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| Escrihuela Ferrándiz, Francisco Javier; Vanegas Forero, David; Miranda, O.G.; Tórtola Baixauli, María Amparo Perfil; Furtado Valle, José Wagner Perfil | |||
| This document is a artículoDate2015 | |||
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Este documento está disponible también en : http://hdl.handle.net/10550/53014 |
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| 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. | |||
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Escrihuela Ferrándiz, Francisco Javier Vanegas Forero, David Miranda, O.G. Tórtola Baixauli, María Amparo Furtado Valle, José Wagner 2015 On the description of nonunitary neutrino mixing Physical Review D 92 5 053009 |
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| http://dx.doi.org/10.1103/PhysRevD.92.053009 |
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22 - Física [3703]