用于GeV尺度中微子实验的强子相互作用中核子产生的基准测试

中文摘要 AI 辅助

在中微子散射实验中，发射的末态粒子对于识别相互作用通道和重建中微子能量至关重要。在核内传播过程中，中微子诱导的强子可以与周围的核子相互作用，改变末态粒子的数量和可探测的能量沉积。因此，中微子实验依赖强子-核散射模型来模拟这些核效应。本文探讨了中微子实验中常见强子（特别是核子和π介子）的强子散射模型所预测的核子产生。我们使用GENIE中微子事件生成器的模拟来研究这些模型，该生成器包含了Geant4 Bertini级联和INCL++的实现。对于常见的靶核，我们发现无介子强子相互作用中发射的核子数量可以用简单的高斯函数和指数衰减函数进行参数化。我们展示了这些关系，并提供了用于解决可见能量和末态核子多重性中强子散射模型差异的重加权工具。

英文摘要

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.

发表机构

• Los Alamos National Laboratory（洛斯阿拉莫斯国家实验室）
• University of Pittsburgh（匹兹堡大学）
• University of Chicago（芝加哥大学）
• Columbia University in the City of New York（纽约市哥伦比亚大学）

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