标题： 展示IceCube DeepCore利用大气中微子振荡探测地球内部的能力 显示英文标题

标题： Demonstrating the ability of IceCube DeepCore to probe Earth's interior with atmospheric neutrino oscillations

摘要： 冰立方中微子天文台是一个光学契伦科夫探测器，在南极洲的一个立方公里冰层中进行仪器安装。 中微子相互作用后发出的契伦科夫光子由沿冰中垂直线缆部署的数字光学模块检测。 冰立方探测器密集仪器化的底部中心区域，称为深核心（DeepCore），优化用于探测GeV量级的大气中微子。 当向上的大气中微子穿过地球时，由于与环境电子的相干前向散射，物质效应会改变它们的振荡概率。 这些物质效应取决于中微子的能量以及它们在传播过程中遇到的电子密度分布。 使用相当于冰立方深核心9.3年观测的模拟数据，我们证明大气中微子可用于探测初步参考地球模型的广泛特征。 在本贡献中，我们展示了建立地球物质效应的初步灵敏度，验证地球电子密度的非均匀分布，并测量地球的质量。 此外，我们还展示了深核心对不同层相关密度测量的灵敏度，结合对地球质量及转动惯量的约束。 显示英文摘要

摘要： The IceCube Neutrino Observatory is an optical Cherenkov detector instrumenting one cubic kilometer of ice at the South Pole. The Cherenkov photons emitted following a neutrino interaction are detected by digital optical modules deployed along vertical strings within the ice. The densely instrumented bottom central region of the IceCube detector, known as DeepCore, is optimized to detect GeV-scale atmospheric neutrinos. As upward-going atmospheric neutrinos pass through Earth, matter effects alter their oscillation probabilities due to coherent forward scattering with ambient electrons. These matter effects depend upon the energy of neutrinos and the density distribution of electrons they encounter during their propagation. Using simulated data at the IceCube Deepcore equivalent to its 9.3 years of observation, we demonstrate that atmospheric neutrinos can be used to probe the broad features of the Preliminary Reference Earth Model. In this contribution, we present the preliminary sensitivities for establishing the Earth matter effects, validating the non-homogeneous distribution of Earth's electron density, and measuring the mass of Earth. Further, we also show the DeepCore sensitivity to perform the correlated density measurement of different layers incorporating constraints on Earth's mass and moment of inertia.