New Neutrino Oscillation Results from T2K

ORAL

Abstract

I report on the latest neutrino oscillation results from T2K. T2K is an off-axis long baseline beam neutrino experiment currently in operation in Japan. The muon neutrino beam generated at the J-PARC facility in Tokai traverses 295km to the Super-Kamiokande detector near Kamioka. T2K is designed to probe neutrino mixing and in particular to make high precision measurements of $\Delta m_{23}^2 $ and$\sin ^2\left( {2\theta _{23} } \right)$ and discover or set a greatly improved limit on $\sin ^2\left( {2\theta _{13} } \right)$ determined from the disappearance of muon neutrinos from the beam and the appearance of electron neutrinos. The first data set, the result of 3.23$\times $10$^{19}$ protons on target, was collected between January and June 2010. A summary of the observed event candidates in Super-Kamiokande is presented, illustrated with some distributions of selection variables.

Authors

  • James Imber

    SUNY at Stony Brook