Neutrino mass and oscillation: An introductory reviewD P ROYTata Institute of Fundamental Research, Homi Bhabha Road, Mumbai 400 005, India Abstract After a brief introduction to neutrino mass via the see-saw model I discuss neutrinomixing and oscillation, first in vacuum and then its matter enhancement. Then the solar and atmospheric neutrino oscillation data are briefly reviewed. Finally I discuss the problem of reconciling hierarchical neutrino masses with at least one large mixing, as implied by these data. A minimal see-saw model for reconciling the two is discussed. Keywords Neutrino; mass; oscillation.PAC No. 12.60.Cn; 12.15.Ff; 14.60.Pq |