Measurement of Partonic Nuclear Effects in Deep-Inelastic Neutrino Scattering using MINERvA

Abstract

The MINERvA collaboration reports a novel study of neutrino-nucleus charged-current deep inelastic scattering (DIS) using the same neutrino beam incident on targets of polystyrene, graphite, iron, and lead. Results are presented as ratios of C, Fe, and Pb to CH. The ratios of total DIS cross sections as a function of neutrino energy and flux-integrated differential cross sections as a function of the Bjorken scaling variable x are presented in the neutrino-energy range of 5 - 50 GeV. Good agreement is found between the data and predicted ratios, based on charged-lepton nucleus scattering, at medium x and low neutrino energies. However, the data rate appears depleted in the vicinity of the nuclear shadowing region, x < 0.1. This apparent deficit, reflected in the DIS cross-section ratio at high neutrino energy , is consistent with previous MINERvA observations and with the predicted onset of nuclear shadowing with the the axial-vector current in neutrino scattering.

References in corpus (21)

• The GENIE Neutrino Monte Carlo Generator
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• The magnetized steel and scintillator calorimeters of the MINOS experiment
• The NuMI Neutrino Beam
• Global Study of Nuclear Structure Functions
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• Nuclear Shadowing in Electro-Weak Interactions
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• Snowmass 2021 LoI: Neutrino-induced Shallow- and Deep-Inelastic Scattering
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• Towards a Unified Model of Neutrino-Nucleus Interactions
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• Recent Results from MINERvA
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