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arXiv · 2609.22662

Benchmarking Nucleon Production in Hadron Interactions Relevant for GeV-scale Neutrino Experiments

Richard Diurba·Steve Dytman·Matthew King·Yinrui Liu
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Abstract

In neutrino scattering experiments, the emitted final state particles are essential for identifying interaction channels and reconstructing neutrino energies. During intranuclear propagation, neutrino-induced hadrons can interact with surrounding nucleons, altering both the number of final state particles and detectable energy depositions. As a result, neutrino experiments rely on hadron-nucleus scattering models to simulate these nuclear effects. This paper explores nucleon production predicted by hadron scattering models for common hadrons in neutrino experiments, specifically nucleons and pions. We investigate these models with simulations from the \textsc{GENIE} neutrino event generator, which includes implementations of \textsc{Geant4} Bertini Cascade and \textsc{INCL++}. For popular target nuclei, we find that the number of emitted nucleons for mesonless hadron interactions can be parameterized by simple Gaussian and exponential decay functions. We present these relationships and provide reweighting tools for addressing the hadron scattering model spread in both visible energy and final state nucleon multiplicities.

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Richard Diurba, Steve Dytman, Matthew King, Yinrui Liu. 2026-09-19. Benchmarking Nucleon Production in Hadron Interactions Relevant for GeV-scale Neutrino Experiments. https://arxiv.org/abs/2609.22662

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