Status of Neutrino Oscillations

Abstract

Solar and atmospheric neutrino data require physics beyond the Standard Model of particle physics. The simplest, most generic, but not yet unique, interpretation of the data is in terms of neutrino oscillations. I summarize the results of the latest three-neutrino oscillation global fit of the data, in particular the bounds on the angle $θ_{13}$ probed in reactor experiments. Even though not implied by the data, bi-maximal neutrino mixing emerges as an attractive possibility either in hierarchical or quasi-degenerate neutrino scenarios.

19 pages, latex, 16 figures, adapted summary of review talks delivered recently at various meetings over the past eight months. To be published by the Astronomical Society of the Pacific, conference series, Ed. V. J. Martinez, V. Trimble and M. J. Pons-Borderia