SMuK 2023 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 107: Searches – Neutrino at accelerators

T 107.4: Vortrag

Donnerstag, 23. März 2023, 16:35–16:50, HSZ/0101

DUNE-PRISM: An innovative technique for neutrino oscillation predictions — •Ioana Caracas for the DUNE collaboration — JGU Mainz

As long baseline experiments are approaching the high precision era, an increased sensitivity towards constraining the oscillation parameter space is expected. Since the oscillation predictions are based on neutrino interaction cross sections, a classical approach is prone to systematic uncertainties, due to the incompleteness in the physical description of such models. This would in turn limit the capability to obtain the physics goals set for modern long baseline neutrino experiments, such as the Deep Underground Neutrino Experiment (DUNE).

An innovative technique, the Precision Reaction-Independent Spectrum Measurement (PRISM), has been proposed and investigated within the DUNE collaboration. This novel method is designed to measure neutrino oscillations based on a data-driven approach, eluding most theoretical modeling 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 33m, sampling thus several neutrino energy spectra. These ND off-axis results are used as a basis to predict the oscillated neutrino spectrum at the DUNE Far Detector, located at a baseline of 1300 km. The prediction obtained with the DUNE-PRISM analysis framework and the systematics impact on the oscillation parameters are presented. Additional studies needed to improve the overall sensitivity to the oscillation parameters and reduce their dependence on the interaction model uncertainties are also discussed.