2025/06/17 by Y. Hino, Hino, Y., Yosuke Ashida +5 · 1 citation
Engineering · Physics and Astronomy · #Atomic and Subatomic Physics Research #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #Nuclear Experiment (nucl-ex) #Nuclear Physics and Applications #Nuclear reactor physics and engineering
paper · pdf · doi:10.48550/arxiv.2506.14388
openalex publication_date 2025/06/17 · openalex created_date 2025/10/18 · openalex updated_date 2026/07/28
The nuclear interaction model plays an essential role in understanding neutrino-nucleus interactions in large-scale neutrino detectors. For example, in the Super-Kamiokande experiment, systematic uncertainties regarding atmospheric neutrino interactions on oxygen limit the sensitivity to some physics studies, such as the diffuse supernova neutrino background search. Reduction of such uncertainties necessitates an accurate modeling of nuclear reactions and subsequent nuclear deexcitation. For this purpose, a detailed study was performed by comparing various combinations of simulation models with the newly released neutron experimental data. From this study, it is found that the combination of INCL++ and NucDeEx implemented in a Geant4-based simulation shows a better agreement with the experimental data. The presented result will be referred to improve the future physics studies at neutrino detectors, including the current focus of Super-Kamiokande.