Wednesday 25 May 2011 Speaker: Costas Andreopoulos (RAL/PPD) Title: "First Neutrino Oscillation Results from T2K" Abstract: T2K is a front-runner, second-generation long-baseline neutrino oscillation experiment. It utilises a new and powerful, relatively pure muon-neutrino beam produced at Japan Proton Accelerator Research Complex (JPARC). The beam is aimed almost 2 degrees off-axis from the position of the Super-Kamiokande water Cherenkov detector in western Japan, 295 km away. The experiment also benefits from a near detector complex, instrumented with finely segmented solid scintillator and TPCs, located 280 m downstream of the beam-line target. The experiment aims to accumulate 8E+21 protons-on-target over the next 5 years. At the end of this running period, T2K aims to have improved present knowledge of sin^{2} (2\theta_{13}), sin^{2} (2\theta_{23}) and \Delta m^{2}_{23} by an order of magnitude. I will present initial muon-neutrino disappearance and electron-neutrino appearance results using the dataset accumulated during the first T2K physics run (January-June 2010), which corresponds to an integrated JPARC neutrino flux exposure of 3.23E+19 protons-on-target.