Neutrino-nucleus interactions in the T2K experiment

TL;DR

This paper analyzes neutrino-nucleus interactions in the T2K experiment using the GiBUU model, focusing on understanding nuclear effects and final-state interactions to improve measurements of neutrino oscillation parameters.

Contribution

It introduces a detailed simulation of nuclear effects and final-state interactions in neutrino-nucleus interactions specific to the T2K experiment.

Findings

Nuclear effects significantly influence event rate predictions.

Final-state interactions impact the interpretation of neutrino signals.

Enhanced modeling improves the accuracy of neutrino oscillation measurements.

Abstract

We present a study of neutrino-nucleus interactions at the T2K experiment based on the GiBUU transport model. The aim of T2K is to measure $\nu_e$ appearance and $\theta_{13}$, but it will also be able to do a precise measurement of $\nu_\mu$ disappearance. The former requires a good understanding of $\pi^0$ production while the latter is closely connected with a good understanding of quasielastic scattering. For both processes we investigate the influence of nuclear effects and particular final-state interactions on the expected event rates taking into account the T2K detector setup.