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Abstract

This thesis gives a theoretical and experimental introduction in neutrino oscillations. First, the description of neutrinos in the standard model of particle physics will be shown. The standard model will be expanded by neutrino mass and this will cause mass mixing, which is the reason for neutrino oscillations. After that, the PMNS ma- trix, which is very important for the theoretical and experimental description, will be parameterized. An expression for the oscillation probability will be derived by the use of quantum mechanic's formalism. This expression will be applied to the special case of two flavors. In this connection, the problems of the quantum mechanical descripton will be mentioned and it will be shown how neutrino oscillations are able to investigate CP violations. Furthermore, the introduction of potentials will cause the MSW effect: Matter could lead to resonant amplifications of flavor transitions. The experiments for the determination of the paramaters are described and the current values of the parameters will be displayed. The knowledge of the data will be finally summarized and the tasks of future experiments will be mentioned.