Measurement of the $\nu_{\mu}$ charged current quasi-elastic cross-section on carbon with the T2K on-axis neutrino beam

TL;DR

This paper presents precise measurements of muon neutrino charged current quasi-elastic cross-sections on carbon at different energies using the T2K beam, confirming model predictions and exploring nuclear effects.

Contribution

First measurement of CCQE cross-sections on carbon at these energies with detailed nuclear model analysis.

Findings

Measured cross-sections at 1.94 GeV and 0.93 GeV agree with models.

Quantified systematic and statistical uncertainties.

Investigated nuclear and multi-nucleon interaction effects.

Abstract

We report a measurement of the $\nu_\mu$ charged current quasi-elastic cross-sections on carbon in the T2K on-axis neutrino beam. The measured charged current quasi-elastic cross-sections on carbon at mean neutrino energies of 1.94 GeV and 0.93 GeV are $(11.95\pm 0.19(stat.)_{-1.47}^{+1.82} (syst.))\times 10^{-39}\mathrm{cm}^2/\mathrm{neutron}$ and $(10.64\pm 0.37(stat.)_{-1.65}^{+2.03} (syst.))\times 10^{-39}\mathrm{cm}^2/\mathrm{neutron}$, respectively. These results agree well with the predictions of neutrino interaction models. In addition, we investigated the effects of the nuclear model and the multi-nucleon interaction.