International School of Cosmic Ray Astrophysics
14th Course: "Neutrinos and Explosive Events in the Universe"
A NATO Advanced Study Institute
2-13 July 2004
Ettore Majorana Centre
Erice, Sicily, Italy
Topic: Neutrino Oscillations and the MSW Effect
Lecturer: Mikheev P. Stanislav
Neutrino masses and mixing must result in oscillations, which are the periodical transformations of an initial type of neutrinos into another one and back. In general case, the picture of neutrino oscillations depends on the properties of the medium, in which neutrinos are propagating. If a neutrino goes through matter with a varying density, a few new resonant phenomena take place (MSW effect).