%0 Journal Article
%T On the description of nonunitary neutrino mixing
%A Escrihuela, F. J.
%A Forero, D. V.
%A Miranda, O. G.
%A Tortola, M.
%A Valle, J. W. F.
%J Physical Review D
%D 2015
%V 92
%N 5
%I Amer Physical Soc
%@ 1550-7998
%G English
%F Escrihuela_etal2015
%O WOS:000361303200003
%O exported from refbase (https://references.ific.uv.es/refbase/show.php?record=2389), last updated on Thu, 03 Mar 2016 16:36:22 +0000
%X 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.
%R 10.1103/PhysRevD.92.053009
%U http://arxiv.org/abs/1503.08879
%U https://doi.org/10.1103/PhysRevD.92.053009
%P 053009-16pp