Kei Ieki
(Kyoto University)
Abstract:
The T2K experiment is an accelerator based long baseline neutrino oscillation experiment. The neutrino beam is produced at J-PARC in Tokai, and detected 295 km away from the production target by the Super-Kamiokande detector. In this talk, we present the latest result of the muon neutrino disappearance measurement and the electron neutrino appearance measurement. Muon neutrino disappearance analyses produce world-leading precision in the measurement of the neutrino mixing parameter $\theta_{23}$. Moreover, electron neutrino appearance analyses constrain a CP violating phase $\delta_{CP}$ by combining our results with the $\theta_{13}$ values measured by reactor experiments.