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arXiv 2101.04839physics.ins-dethep-ex
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基于机器学习的JUNO顶点和能量重构

Vertex and Energy Reconstruction in JUNO with Machine Learning Methods

Zhen Qian, Vladislav Belavin, Vasily Bokov, Riccardo Brugnera, Alessandro Compagnucci, Arsenii Gavrikov, Alberto Garfagnini, Maxim Gonchar, Leyla Khatbullina, Z… 展开作者

Zhen Qian, Vladislav Belavin, Vasily Bokov, Riccardo Brugnera, Alessandro Compagnucci, Arsenii Gavrikov, Alberto Garfagnini, Maxim Gonchar, Leyla Khatbullina, Ziyuan Li, Wuming Luo, Yury Malyshkin, Samuele Piccinelli, Ivan Provilkov, Fedor Ratnikov, Dmitry Selivanov, Konstantin Treskov, Andrey Ustyuzhanin, Francesco Vidaich, Zhengyun You, Yumei Zhang, Jiang Zhu, Francesco Manzali

摘要:

江门地下中微子观测站(JUNO)是一个旨在研究中微子振荡的实验。确定中微子质量有序度和精确测量中微子振荡参数$\sin^2 2θ_{12}$、$Δm^2_{21}$和$Δm^2_{32}$是实验的主要目标。一个丰富的物理程序以外的振荡分析也被预见。在JUNO中精确重建粒子相互作用事件的能力对于实验的成功至关重要。在这项工作中,我们提出了一些机器学习方法应用到顶点和能量重建。比较和研究了多种模型和架构,包括Boosted Decision Trees(BDT),深度神经网络(DNN),几种基于ResNet和VGG的卷积神经网络(CNN),以及基于DeepSphere的图神经网络。基于一项研究,使用数据集进行,由官方JUNO软件生成,我们证明了机器学习方法达到必要的准确度,达到JUNO的物理目标:$σ_E=3\%$在$E_\text{vis}=1~\text{MeV}$的能量和$σ_{x,y,z}=10~\text{cm}$在$E_\text{vis}=1~\text{MeV}$的位置。

英文摘要:

The Jiangmen Underground Neutrino Observatory (JUNO) is an experiment designed to study neutrino oscillations. Determination of neutrino mass ordering and precise measurement of neutrino oscillation parameters $\sin^2 2θ_{12}$, $Δm^2_{21}$ and $Δm^2_{32}$ are the main goals of the experiment. A rich physical program beyond the oscillation analysis is also foreseen. The ability to accurately reconstruct particle interaction events in JUNO is of great importance for the success of the experiment. In this work we present a few machine learning approaches applied to the vertex and the energy reconstruction. Multiple models and architectures were compared and studied, including Boosted Decision Trees (BDT), Deep Neural Networks (DNN), a few kinds of Convolution Neural Networks (CNN), based on ResNet and VGG, and a Graph Neural Network based on DeepSphere. Based on a study, carried out using the dataset, generated by the official JUNO software, we demonstrate that machine learning approaches achieve the necessary level of accuracy for reaching the physical goals of JUNO: $σ_E=3\%$ at $E_\text{vis}=1~\text{MeV}$ for the energy and $σ_{x,y,z}=10~\text{cm}$ at $E_\text{vis}=1~\text{MeV}$ for the position.

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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