Data based two-body current contribution to neutrino-nucleus cross section

Abstract

A phenomenological model of two-body current (2p2h) contribution to neutrino cross section is introduced. Predictions of the Valencia model for 2p2h are modified using recent CC0pi measurements from T2K and MINERvA experiments. Our results suggest a significant increase of the 2p2h cross section at neutrino energies bigger than 1 GeV and also a redistribution of 2p2h events as function of energy and momentum transfer. This may have a big impact on neutrino energy reconstruction in neutrino oscillation parameters.

arXiv comment10 pages, 5 figures

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• Event Generators for High-Energy Physics Experiments
• New CC0π GENIE Model Tune for MicroBooNE
• Study of final-state interactions of protons in neutrino-nucleus scattering with INCL and NuWro cascade models
• JLab spectral functions of argon in NuWro and their implications for MicroBooNE
• Running axial mass of the nucleon as a phenomenological tool for calculating QE neutrino-nucleus cross sections
• Data-driven model validation for neutrino-nucleus cross section measurements