Double- and single-differential cross sections for inclusive charged-current -nucleus scattering are reported for the kinematic domain 0 to in three-momentum transfer and 0 to 2 GeV in available energy, at a mean energy of 1.86 GeV. The measurements are based on an estimated 995,760 charged-current (CC) interactions in the scintillator medium of the NOvA Near Detector. The subdomain populated by 2-particle-2-hole (2p2h) reactions is identified by the cross section excess relative to predictions for -nucleus scattering that are constrained by a data control sample. Models for 2-particle-2-hole processes are rated by comparisons of the predicted-versus-measured CC inclusive cross section over the full phase space and in the restricted subdomain. Shortfalls are observed in neutrino generator predictions obtained using the theory-based València and SuSAv2 2p2h models. Published by the American Physical Society2025
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Measurement of inclusive charged-current νμ scattering on hydrocarbon at ⟨Eν⟩∼6 GeV with low three-momentum transfer
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The first simultaneous measurements of the quasielasticlike cross section on C, CH, , Fe, and Pb targets as a function of kinematic imbalance variables in the plane transverse to the incoming neutrino direction are presented. These variables combine the muon and proton information to provide a new way to disentangle the effects of the nucleus in quasielasticlike processes. The data were obtained using a wideband beam with . Cross-section ratios of the different target materials to CH are also shown. These measurements are used to explore the nature of the cross-section scaling, as well as initial and final state interaction effects. Comparisons are made to predictions from a number of commonly used neutrino Monte Carlo event generators. The range of predictions of the different models tends to cover the data but the degree and consistency of the agreement suffers in regions, and on higher targets, where the final state interactions are expected to be more pronounced.more » « less
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