Quasielastic and multinucleon excitations in antineutrino-nucleus interactions

TL;DR

This paper models antineutrino-nucleus interactions, successfully reproducing experimental data by incorporating multinucleon excitations, thus improving understanding of quasielastic scattering in neutrino physics.

Contribution

It extends previous neutrino interaction models to antineutrinos, demonstrating accurate reproduction of experimental cross sections with multinucleon effects included.

Findings

Model accurately reproduces MiniBooNE antineutrino data

Inclusion of multinucleon excitations is essential for agreement

Double differential cross section matches experimental results

Abstract

We investigate the MiniBooNE recent data on the antineutrino nucleus interaction, using the same theoretical description with the same parameters as in previous works on neutrino interactions. The double differential quasielastic cross section, which is free from the energy reconstruction problem, is well reproduced by our model once the multinucleon excitations are incorporated. A similar agreement is achieved for the Q^2 distribution.