T2K and NuPRISM: An experimental solution to the problems of neutrino interactions in long baseline neutrino experiments

T2K is a long baseline neutrino experiment in Japan that has published world-leading measurements of neutrino oscillations and has the potential to find evidence of CP violation in the lepton sector.  The first half of this talk will give a brief description of neutrino oscillations before presenting the latest neutrino oscillation results from the T2K experiment.  The difficulties of neutrino interaction modelling and how this affects oscillation analyses will be discussed before introducing the NuPRISM detector. 
    NuPRISM is an intermediate water Cherenkov detector that continuously samples the neutrino beam across a range of off-axis angles.  This detector can remove the problems associated with neutrino interactions by recreating the oscillated far detector spectrum using near detector data.  The second half of the talk will describe the NuPRISM analysis method, highlighting the unique abilities of the detector and will present an oscillation analysis that is insensitive to incorrect neutrino interaction modelling.