TY  - JOUR
AU  - Escrihuela, F. J.
AU  - Forero, D. V.
AU  - Miranda, O. G.
AU  - Tortola, M.
AU  - Valle, J. W. F.
PY  - 2015
DA  - 2015//
TI  - On the description of nonunitary neutrino mixing
T2  - Phys. Rev. D
JO  - Physical Review D
SP  - 053009
EP  - 16pp
VL  - 92
IS  - 5
PB  - Amer Physical Soc
AB  - 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.
SN  - 1550-7998
UR  - http://arxiv.org/abs/1503.08879
UR  - https://doi.org/10.1103/PhysRevD.92.053009
DO  - 10.1103/PhysRevD.92.053009
LA  - English
N1  - WOS:000361303200003
ID  - Escrihuela_etal2015
ER  -