posted on 2023-06-10, 06:37authored byM A Acero, P Adamson, L Aliaga, N Anfimov, A Antoshkin, E Arrieta-Diaz, L Asquith, A Aurisano, A Back, M Baird, N Balashov, P Baldi, B A Bambah, Jeff HartnellJeff Hartnell, others
We report cross-section measurements of the final-state muon kinematics for ? µ charged-current interactions in the NOvA near detector using an accumulated 8.09×1020 protons on target in the NuMI beam. We present the results as a double-differential cross section in the observed outgoing muon energy and angle, as well as single-differential cross sections in the derived neutrino energy, E?, and square of the four-momentum transfer, Q2. We compare the results to inclusive cross-section predictions from various neutrino event generators via ?2 calculations using a covariance matrix that accounts for bin-to-bin correlations of systematic uncertainties. These comparisons show a clear discrepancy between the data and each of the tested predictions at forward muon angle and low Q2, indicating a missing suppression of the cross section in current neutrino-nucleus scattering models.