Reconciling solar and terrestrial neutrino oscillation evidence with minimum sacrifice

The present possible evidence in favor of neutrino masses and mixings from solar, atmospheric, and accelerator experiments cannot all be reconciled in a three-family framework, unless some data are excluded. We grade all possible three-family scenarios according to their compatibility with the available data. A recently proposed scenario appears to emerge naturally as the most likely solution to all oscillation evidence, with the only exception being the angular dependence of multi-GeV atmospheric data in the Kamiokande experiment. We describe in detail the status and the phenomenological implications of this ''minimum sacrifice'' solution.