Erlangen 2026 – scientific programme

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T: Fachverband Teilchenphysik

T 66: Neutrino Physics IV

T 66.5: Talk

Thursday, March 19, 2026, 17:15–17:30, AudiMax

DUNE-PRISM: An innovative technique for neutrino oscillation analysis — •Ioana Alexandra Caracas — JGU Mainz, Germany

As long baseline neutrino experiments are entering the high-precision era, an increased sensitivity towards constraining the oscillation parameters space is expected. A classical approach for the oscillation predictions is prone to systematic uncertainties, due to the incompleteness of neutrinos interaction cross section modelling. This would in turn limit the capability to obtain the physics goals for modern long baseline experiments, such as the Deep Underground Neutrino Experiment (DUNE). An innovative technique, the Precision Reaction Independent Spectrum Measurement (PRISM) has been proposed and studied within the DUNE collaboration. This novel method is designed to measure and predict neutrino oscillated spectra on a data-driven basis, thus avoiding many neutrino interaction uncertainties. In this regard, the Near Detector (ND) is designed to move off the neutrino beam axis at several locations up to a distance of 28.5 m. Different neutrino fluxes are thus sampled and these ND off-axis results are further used to predict the neutrino oscillated spectrum at the DUNE Far Detector. The prediction obtained with the DUNE-PRISM analysis framework and preliminary results regarding the systematics impact on the oscillation parameters will be presented. Ongoing studies to improve the overall sensitivity to the oscillation parameters and reduce their dependence on the interaction model will also be discussed. The importance of sampling the entire off-axis space will also be high-lighted.

Keywords: DUNE; oscillation; PRISM; data-driven