Measurements of protons and charged pions emitted from ${\nu }_{\mu }$ charged-current interactions on iron at a mean neutrino energy of 1.49GeV using a nuclear emulsion detector

Abstract

This study conducted an analysis of muons, protons, and charged pions emitted from ${\nu }_{\mu }$ charged-current interactions on iron using a nuclear emulsion detector. The emulsion detector with a 65kg iron target was exposed to a neutrino beam corresponding to 4.0$\times$10${}^{19}$ protons on target with a mean neutrino energy of 1.49GeV. The measurements were performed at a momentum threshold of 200 (50)MeV/$c$ for protons (pions), which are the lowest momentum thresholds attempted up to now. The measured quantities are the multiplicities, emission angles, and momenta of the muons, protons, and charged pions. In addition to these inclusive measurements, exclusive measurements such as the muon-proton emission-angle correlations of specific channels and the opening angle between the protons of CC0$\pi$2$p$ events were performed. The data were compared to Monte Carlo (MC) predictions and some significant differences were observed. The results of the study demonstrate the capability of detailed measurements of neutrino-nucleus interactions using a nuclear emulsion detector to improve neutrino interaction models.

21 pages, 25 figures

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Cited by in corpus (2)

• Particle Physics at the European Spallation Source
• Momentum reconstruction of charged particles using multiple Coulomb scatterings in a nuclear emulsion detector