Measurement of single charged pion production in the charged-current interactions of neutrinos in a 1.3 GeV wide band beam

TL;DR

This paper measures the cross section of single charged pion production in muon neutrino interactions at 1.3 GeV, providing data that supports existing models and previous experiments.

Contribution

It presents the first measurement of the cross section ratio of single $$ production to charged-current quasi-elastic interactions at this energy in a carbon target.

Findings

Cross section ratio is 0.734 with uncertainties.

Results agree with previous experiments and models.

Energy-dependent cross section ratio is also provided.

Abstract

Single charged pion production in charged-current muon neutrino interactions with carbon is studied using data collected in the K2K long-baseline neutrino experiment. The mean energy of the incident muon neutrinos is 1.3 GeV. The data used in this analysis are mainly from a fully active scintillator detector, SciBar. The cross section for single $\pi^{+}$ production in the resonance region ($W<2$ GeV/$c^2$) relative to the charged-current quasi-elastic cross section is found to be 0.734 $^{+0.140}_{-0.153}$. The energy-dependent cross section ratio is also measured. The results are consistent with a previous experiment and the prediction of our model.