Long baseline neutrino oscillations and leptonic CP violation

The status of 3-generation lepton mixing is reviewed. Future possible neutrino facilities using: i) intense conventional ν(−)μ sources, ii) superbeams and iii) neutrino factories are discussed. Properties of CP-violating asymmetries are described. It is shown that our ability to measure the CP-violating phase δ is rather insensitive to the specific value of θ13 for 0.01⩽sin22θ13≲0.20, as well as the detector distance (for very long distances). The potential for making precision measurements of all neutrino oscillation parameters (θij,Δmij2,δ) using a wide band νμ beam is explained using results of a Brookhaven-Homestake (2540km) study. An outlook on the future is given.