DUNE-PRISM analysis: A novel way for neutrino oscillation measurement

For a long time, constraining neutrino interaction uncertainties has been difficult as no complete model of neutrino-nucleus interactions is available. As we enter the high precision era for long-baseline neutrino oscillation measurements, these uncertainties limit our ability to achieve the physics goals of next-generation experiments like the Deep Underground Neutrino Experiment (DUNE). A novel program called PRISM (Precision Reaction-Independent Spectrum Measurement) is proposed within DUNE to measure neutrino oscillations using a data-driven method to circumvent most theoretical modeling uncertainties. It requires the DUNE near detector (ND) to move off the neutrino beam axis to sample different neutrino energy spectra. These ND spectra serve as the basis for the prediction of the oscillated data at the far detector 1300km away. In this talk, I will elaborate on the innovative technique behind the DUNE-PRISM oscillation analysis and the most recent progress of the systematic impacts will be presented. These results guide us in determining what other studies need to be done to reduce the overall sensitivity of the oscillation parameters to interaction model uncertainties and detector effects. Plans and ideas for DUNE-PRISM oscillation analysis will also be presented.