Future neutrino oscillation physics in Japan

T2K is the next generation neutrino oscillation experiment. It will start in 2009. The main goals are the discovery of non-zero θ13 and precise measurements of sin22θ23 and . If non-zero θ13 is observed, T2K hopes to proceed to the next phase. With two identical detectors placed in Kamioka and Korea for the J-PARC neutrino beam, it will be possible to determine the CP violation phase and the neutrino mass hierarchy. In addition, this setup can determine the octant of θ23 by the observation of solar oscillation effect.