Neutrino oscillations is one of the main questions in modern physics of weak interactions. Neutrinos are uncharged leptons, i.e. particles of the Standard Model that do not participate in the strong interaction. They can be divided into three types (or, as they say, three flavors), in accordance with the classification of the charged leptons. This electron, muon and taon neutrinos. Oscillations are the processes of conversion from one type of neutrino to another. The oscillations occupy an extremely important place in modern neutrino physics, because they can answer the question of the neutrino mass existence. Recently, intensive experimental study of this phenomenon is conducted. A significant part of the modern neutrino experiments in some way connected with the study of neutrino oscillations.
Faculty of Physics, Lomonosov Moscow State University. 1(2), Leninskie gory, GSP-1, Moscow 119991, Russian Federation