CNGS束流中OPERA实验的中微子振荡结果

Proceedings of The 21st international workshop on neutrinos from accelerators — PoS(NuFact2019) Pub Date : 2020-06-11 DOI:10.22323/1.369.0140

B. Kliček, M. Tenti

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引用次数: 0

摘要

OPERA实验旨在观察μ中微子CNGS束中tau中微子的外观。通过观察高纯度的ν τ带电电流(CC)相互作用候选事件，成功实现了这一目标。此外，还可以分离出ν e和νµCC候选事件以及中性电流候选事件的样本。用这四个样本对标准中微子混合模型和3 + 1无菌模型的参数进行了额外的约束。这张海报将回顾使用OPERA仪器测量中微子相互作用的方法，并概述实验产生的中微子振荡的所有结果。特别地，将展示对ν τ和ν e样品的联合分析，该分析排除了MiniBooNE外观分析所允许的无菌中微子相空间的很大一部分。

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Neutrino oscillation results of the OPERA experiment in the CNGS beam

The OPERA experiment was designed to observe the appearance of tau neutrinos in the muon neutrino CNGS beam. This goal was successfully reached by observing a high purity sample of ν τ charged current (CC) interaction candidate events. Additionally, it was possible to isolate samples of ν e and ν µ CC candidates, as well as neutral current candidate events. These four samples were used to put additional constraints on parameters of both the standard neutrino mixing model and the 3 + 1 sterile model. This poster will review the methodology of measuring neutrino in-teractions using the OPERA apparatus and give an overview of all results on neutrino oscillations produced by the experiment. In particular, a joint analysis of ν τ and ν e samples will be shown which excludes a signiﬁcant fraction of the sterile neutrino phase space allowed by MiniBooNE appearance analysis.

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Proceedings of The 21st international workshop on neutrinos from accelerators — PoS(NuFact2019)

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