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arXiv 2306.04028hep-ex
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NOvA近探测器中ν_μ带电电流单举π^0产生的测量

Measurement of $ν_μ$ Charged-Current Inclusive $π^0$ Production in the NOvA Near Detector

NOvA Collaboration

AI总结:

利用NOvA近探测器16.5万个事例测量1-5 GeV能区ν_μ带电电流单举π^0产生截面,给出总截面与多维微分截面,并与GENIE预测对比,发现总截面高7.5%但在误差内一致。

摘要:

利用NOvA实验近探测器收集的16.5万个选定事例,测量了中微子能量在1至5 GeV之间的相互作用ν_μA→μ^-π^0 X的截面。该近探测器为碳氢化合物基探测器,暴露于费米国家加速器实验室的NuMI中微子束流。结果以通量平均总截面以及出射μ子和π^0的动量与角度、总四动量转移和强子系统不变质量的微分截面形式给出。并与GENIE中微子相互作用生成器参考版本的预测进行了比较。测得的总截面为(3.57±0.44)×10^{-39} cm^2,比GENIE预测高7.5%,但在实验误差范围内一致。

英文摘要:

Cross sections for the interaction $ν_μA\rightarrowμ^-π^0 X$ with neutrino energies between 1 and 5~GeV are measured using a sample of 165k selected events collected in the NOvA experiment's Near Detector, a hydrocarbon-based detector exposed to the NuMI neutrino beam at the Fermi National Accelerator Laboratory. Results are presented as a flux-averaged total cross section and as differential cross sections in the momenta and angles of the outgoing muon and $π^0$, the total four-momentum transfer, and the invariant mass of the hadronic system. Comparisons are made with predictions from a reference version of the GENIE neutrino interaction generator. The measured total cross section of ($3.57\pm0.44)\times10^{-39}\ \mathrm{cm}^2$ is $7.5\%$ higher than the GENIE prediction but is consistent within experimental errors.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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