Study of neutrino-nucleus reactions with CRISP Program (0 < $E_\nu$ < 3 GeV)

TL;DR

This study uses the CRISP Monte Carlo program to simulate neutrino-nucleus reactions at energies up to 3 GeV, analyzing nuclear effects and comparing results with experimental data, revealing the need to consider multi-nucleon interactions.

Contribution

The paper introduces a detailed simulation of neutrino-nucleus reactions using CRISP, highlighting the importance of nuclear effects and multi-nucleon interactions for accurate modeling.

Findings

Good agreement with MiniBooNE data for particle emission cross-sections.

Nuclear effects like fermionic motion and Pauli blocking significantly influence reactions.

Different axial mass values are needed for different target nuclei, suggesting multi-nucleon interactions are important.

Abstract

The neutrino-nucleus reactions are studied at energies from 0 to 3 GeV, using the CRISP program. To simulate these reactions, CRISP uses the Monte Carlo method through an intranuclear cascade model. Quase-elastic and baryonic resonance formation channels for the neutrino-nucleon interaction are considered. The total and differential particle emission cross-sections were obtained, obtaining a good agreement with the values reported by the MiniBooNE experiment. The influence of nuclear effects on the studied reactions, such as fermionic motion, the Pauli blocking mechanism, and the nucleonic separation energy, was shown. It was not possible to simultaneously reproduce the $\nu_\mu + D$ and $\nu_\mu + ^{12}C$ reactions using the same axial mass value. For the charged current quasi-elastic channel, $M_A = 0.95 \ GeV$ for the $\nu_\mu + D$ reaction, and $M_A = 1.35 \ GeV$ for the $\nu_\mu + ^{12}C$ reaction. This can be solved if one considers, in addition to the neutrino-nucleon interaction, the neutrino interaction with a pair of nucleons, just as we demonstrate in the last part of this work.