Atmospheric, Solar, and CHOOZ neutrinos: a global three generation analysis

Abstract

We perform a global three generation analysis of the current solar and atmospheric evidence in favor of neutrino oscillations. We also include the negative results coming from CHOOZ to constrain the nu_e mixing. We study the zones of mass-mixing oscillations parameters compatible with all the data. It is shown that almost pure nu_mu <--> nu_tau oscillations are required to explain the atmospheric neutrino anomaly and almost pure nu_1 <--> nu_2 oscillations to account for the solar neutrino deficit.

4 pages, talk given at 36th Rencontres de Moriond: Electroweak Interactions and Unified Theories, Les Arcs, France, 10-17 Mar 2001