Probing sterile neutrinos with exotic interactions

通过奇异的相互作用探测惰性中微子

• 批准号: 2766019
• 金额: --
• 依托单位: University College London
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2020
• 资助国家: 英国
• 起止时间: 2020 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2766019
• 关键词: Probing; sterile; neutrinos; exotic; interactions

We will explore the constraints on sterile neutrinos under the presence of exotic interactions, i.e. beyond the mass mixing with the SM neutrinos. This will take the form of an EFT analysis of the SM including sterile neutrinos with masses up to the electroweak scale. The goal is a comprehensive picture of existing constraints and the future potential of measurements such as of the neutrino mass (neutrinoless double beta decay, Tritium decay) and the cosmic neutrino background. The project will be conducted alongside a PhD project (2019-23), supervised by Deppisch, on data-driven methods to improve neutrinoless double beta decay nuclear matrix elements, funded by the STFC CDT in Data Intensive Science at UCL. After initial training, the student will: apply statistical techniques of parameter inference and perform an updated global fit of current and prospective neutrino mass measurements (Y1); develop an EFT framework with sterile neutrinos with effective operators and connect these to observables (Y2); analyse in detail the constraints on sterile neutrinos as well as the potential of the most promising future measurements with a focus on modifications due to exotic interactions (Y3).

我们将探索在奇异相互作用存在的情况下，即超出与SM中微子的质量混合的情况下，对不育中微子的限制。这将采取对SM的EFT分析的形式，包括质量高达电弱标度的稀有中微子。目标是全面了解现有的限制和测量的未来潜力，例如中微子质量(无中微子双β衰变，氚衰变)和宇宙中微子背景。该项目将与一个由Deppisch监督的博士项目(2019-23年)一起进行，该项目是关于改善无中微子双贝塔衰变核矩阵元素的数据驱动方法，由伦敦大学学院数据密集型科学中的STFC CDT资助。在初步培训后，学生将：应用参数推断的统计技术，并对当前和未来的中微子质量测量进行最新的全球拟合(Y1)；开发具有有效操作符的无菌中微子的EFT框架，并将这些框架与可观测到的中微子相连接(Y2)；详细分析对无菌中微子的限制以及最有希望的未来测量的潜力，重点放在由于外来相互作用而进行的修改(Y3)。