Final State Interactions Effects in Neutrino-Nucleus Interactions

TL;DR

This paper discusses the impact of Final State Interactions in neutrino-nucleus interactions, comparing models and analyzing observables to improve understanding of neutrino event simulations.

Contribution

It introduces a detailed comparison of FSI models, explains the role of Formation Time, and evaluates NuWro generator's effectiveness in modeling neutrino interactions.

Findings

FSI effects significantly influence pion and hadron yields

NuWro successfully reproduces neutral current π^0 production data

Different FSI models show varying impacts on observables

Abstract

Final State Interactions effects are discussed in the context of Monte Carlo simulations of neutrino-nucleus interactions. A role of Formation Time is explained and several models describing this effect are compared. Various observables which are sensitive to FSI effects are reviewed including pion-nucleus interaction and hadron yields in backward hemisphere. NuWro Monte Carlo neutrino event generator is described and its ability to understand neutral current $\pi^0$ production data in $\sim 1$ GeV neutrino flux experiments is demonstrated.