Abstract

The T2K long baseline neutrino oscillation experiment is composed of a near detector at 280 m and a far detector Super-Kamiokande, located 295 km from the source of neutrinos. The 30 GeV proton beam at JPARC is used to produce a beam of mainly muon neutrinos which are directed toward the large Cherenkov detector. The goal of the experiment is oscillation measurements, such as electron neutrino appearance and θ23 mixing angle measurements from muon neutrino disappearance. By reversing the beam polarity antineutrino oscillations may also be studied. Muon antineutrino disappearance and electron antineutrino appearance have been studied with 4×1020 protons on target in antineutrino beam mode. The most recent oscillation results from T2K for neutrinos and antineutrinos are presented here. Future long baseline oscillation projects in short and long time scale are briefly mentioned.

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