Parametrizing and rephasing neutrino mixing

Details Parametrizing and rephasing neutrino mixing Parametrizing and rephasing neutrino mixing

2000-05-29

arxiv.org/abs/hep-ph/0005290v1

Phys.Atom.Nucl. 65 (2002) 109-120; Yad.Fiz. 65 (2002) 114-125

Physics

High Energy Physics

High Energy Physics - Phenomenology

25 pages, LaTeX

Scientific paper

10.1134/1.1446562

Neutrino mixing in the standard model extensions, both renormalizable and effective, with arbitrary numbers of the singlet and left-handed doublet neutrinos is investigated in a systematic fashion. The charged and neutral (the Z and Higgs mediated)lepton currents are written under general Majorana condition, and the odservable independence of the choice of the condition, the rephasing invariance, is studied. A parametrization of the neutrino mixing matrices in the doublet-singlet factorized form is developed. Its relationship with the see-saw mechanism is shown in the limit of a small doublet-singlet mixing. The structure of the mixing matrices relevant to the neutrino oscillation experiments is explicated.

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