T2K at J-PARC

The Tokai to Kamioka long baseline neutrino oscillation experiment (T2K), which utilizes the 50GeV PS at J-PARC, was approved in 2004. This experiment is expected to be started in 2009. The main objectives of the first stage of the T2K experiments are a sensitive search of νμ→νe oscillation and a precision measurement of θ23 and Δm23. Compared to the current experimental results, one order of magnitude improvements in all three measurements are expected.