Overview of the T2K long baseline neutrino oscillation experiment

Abstract

Neutrino oscillations were discovered by atmospheric and solar neutrino experiments, and have been confirmed by experiments using neutrinos from accelerators and nuclear reactors. It has been found that there are large mixing angles in the $ν_e \to ν_μ$ and $ν_μ\to ν_τ$ oscillations. The third mixing angle $θ_{13}$, which parameterizes the mixing between the first and the third generation, is constrainted to be small by the CHOOZ experiment result. The T2K experiment is a long baseline neutrino oscillation experiment that uses intense neutrino beam produced at J-PARC and Super-Kamiokande detector at 295 km as the far detector to measure $θ_{13}$ using $ν_e$ appearance. In this talk, we will give an overview of the experiment.

To be published in the proceedings of DPF-2009, Detroit, MI, July 2009, eConf C090726