NEUTRINO PHYSICS

摘要

Recent progress in neutrino physics, which is certainly one of the most excitingareas of research at present, is reviewed. The implications of neutrino oscillations and mass squared splitting between neutrinos of different flavor on the pattern of the neutrino mass matrix is discussed. Neutrinos are providing evidence for new physics but the scale of the new physics is not yet pinned down. The heavy right handed Majorana neutrinos, needed to understand the tiny masses of light neutrinos at new physics scale, may provide an explanation for baryogenesis through leptogenesis.