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Neutrinos: Windows to Planck Physics

P. Ramond
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Abstract

After recalling some elegant contributions of the late Freydoon Mansouri, we turn to neutrino physics and use a {\it modicum} of grand unification to relate quark and lepton mixing matrices. We advocate an expansion for the MNS matrix, {\it à la} Wolfenstein, and argue that in a wide class of models, $θ_{13}$ is a Cabibbo mixing effect. Also the large neutrino mixing angles reflect the mass patterns of the right-handed neutrinos near the Planck scale, and provide evidence for family structure at that scale.

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P. Ramond. 2003-12-31. Neutrinos: Windows to Planck Physics. https://doi.org/10.1142/9789812702340_0004

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