用NOvA近探测器数据调整中微子相互作用模型和评估不对称性
Adjusting Neutrino Interaction Models and Evaluating Uncertainties using NOvA Near Detector Data
摘要：
NOvA中微子振荡实验的两个探测器设计，其中两个功能相同的探测器暴露于强中微子束，有助于消除横截面不确定性的领先优势。然而，有限的知识中微子相互作用截面仍然引起了一些最大的系统的不确定性，在当前的振荡测量。我们发现当代中微子相互作用的模型与NOvA的数据不一致，与其他实验中看到的差异一致。调整中微子相互作用模型在GENIE，提高与我们的数据一致。我们还描述了这些模型的系统不确定性，包括多核子相互作用的不确定性，从一个新开发的程序，使用NOVA附近的探测器数据。
英文摘要：
The two-detector design of the NOvA neutrino oscillation experiment, in which two functionally identical detectors are exposed to an intense neutrino beam, aids in canceling leading order effects of cross-section uncertainties. However, limited knowledge of neutrino interaction cross sections still gives rise to some of the largest systematic uncertainties in current oscillation measurements. We show contemporary models of neutrino interactions to be discrepant with data from NOvA, consistent with discrepancies seen in other experiments. Adjustments to neutrino interaction models in GENIE that improve agreement with our data are presented. We also describe systematic uncertainties on these models, including uncertainties on multi-nucleon interactions from a newly developed procedure using NOvA near detector data.
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