一种有效的拓扑转移干扰项用于基于GENIE的中微子-氩半包容分析：一种以MicroBooNE约束诊断为方法学建议
An effective topology-transfer nuisance for Genie-based neutrino-argon semi-inclusive analyses: a methodological proposal with MicroBooNE-constrained diagnostic
- Universidad Técnica Federico Santa María（费德里科Santa玛丽亚技术大学）
- Millennium Institute for Subatomic Physics at the High Energy Frontier (SAPHIR)（高能前沿亚原子物理千年研究所（SAPHIR））
机构由 AI 辅助整理，请以论文原文为准。
AI总结：
针对GENIE无法跨质子拓扑边界转移事件的问题，提出经验干扰参数f_mig作为逐事件重加权，经MicroBooNE数据约束，可缓解误建模并用于未来LArTPC分析。
AI中文摘要：
液氩时间投影室振荡分析越来越多地在约35 MeV径迹阈值下将样本分为质子标记（Np）和无<｜begin▁of▁sentence｜>#质子（0p）拓扑，但标准GENIE Reweight库没有可跨此边界转移事件的拨片。我们提出一个单一的经验干扰参数$f_{\rm mig}$，作为对标称GENIE输出的逐事件重加权来填补这一空白，无需重新生成事件即可实现。它作为一种方法学诊断提出：一个有效的拓扑转移替代量，吸收了近阈值质子误建模效应的未指定组合（质子侧末态相互作用、核子动量分布、共振$Q^2$形状、介子交换流运动学形状），而非对任何单一微观机制的测量。作为参考尺度，GENIE级联中缺失的位置相关平均场能量损失根据$^{40}$Ar密度分布估计为百分之几，与MicroBooNE数据上级联和输运生成器报告的质子透明度差异一致。主要约束是对MicroBooNE同时发布的CC 0p/Np微分截面进行直接扫描，无扇区权重正则化：$\hat{f}_{\rm mig} = 0.093 \pm 0.024$，$3.8\sigma$（Wilks）/ $3.2\sigma$（经验）。一个辅助的NC $\Delta$辐射边带拟合给出$\hat{f}_{\rm mig} = 0.050^{+0.029}_{-0.022}$，以扇区权重先验为条件；两个数据集共享通量/探测器系统误差，是相互佐证而非独立。引入$f_{\rm mig}$还缓解了迁移盲拟合中补偿性的CCRES扇区权重抑制。提取的参数最好理解为MicroBooNE BNB配置的通量积分有效干扰方向，适合作为未来LArTPC分析的候选GENIE拨片，有待探测器级验证。
英文摘要：
Liquid-argon TPC oscillation analyses increasingly split samples into proton-tagged (Np) and proton-less (0p) topologies at the ~35 MeV tracking threshold, but the standard GENIE Reweight library has no dial that transfers events across this boundary. We propose a single empirical nuisance parameter, $f_{\rm mig}$, that fills this gap as a per-event reweight on nominal GENIE output, implementable without event regeneration. It is presented as a methodological diagnostic: an effective topology-transfer surrogate absorbing an unspecified combination of near-threshold proton mismodelling effects (proton-side FSI, nucleon-momentum distribution, RES $Q^2$ shape, MEC kinematic shape), not a measurement of any single microscopic mechanism. As a reference scale, the position-dependent mean-field energy loss absent from GENIE's cascade is estimated from the $^{40}$Ar density profile to be a few percent, consistent with proton-transparency differences reported between cascade and transport generators on MicroBooNE data. The primary constraint is a direct scan on the MicroBooNE simultaneous CC 0p/Np differential cross-section release with no sector-weight regularisation: $\hat{f}_{\rm mig} = 0.093 \pm 0.024$, $3.8σ$ (Wilks) / $3.2σ$ (empirical). A supporting NC $Δ$ radiative sideband fit gives $\hat{f}_{\rm mig} = 0.050^{+0.029}_{-0.022}$, conditional on sector-weight priors; the two datasets share flux/detector systematics and are corroborating rather than independent. Introducing $f_{\rm mig}$ also relieves a compensatory CCRES sector-weight suppression in migration-blind fits. The extracted parameter is best understood as a flux-integrated effective nuisance direction for the MicroBooNE BNB configuration, suitable as a candidate GENIE dial for future LArTPC analyses pending detector-level validation.
