Theory of Neutrino Masses and Mixing

Abstract

In this talk I will review our present knowledge on neutrino masses and mixing trying to emphasize what has been definitively proved and what is in the process of being probed. I will also discuss the most important theoretical implications of these results: the existence of new physics, the estimate of the scale of this new physics as well as some other possible consequences such as leptogenesis origin of the baryon asymmetry.

Comments: 18 pages, 16 postscript figures, uses espcrc2.sty; Plenary talk given at the 31st international conference on high energy physics (ICHEP 2002), Amsterdam, 24-31 July 2002. Typos corrected