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).

我们将探索在存在奇异相互作用的情况下对惰性中微子的限制，即超越与 SM 中微子的质量混合。这将采取对 SM 进行 EFT 分析的形式，其中包括质量达到电弱尺度的惰性中微子。目标是全面了解现有限制和未来测量潜力，例如中微子质量（无中微子双贝塔衰变、氚衰变）和宇宙中微子背景。该项目将与 Deppisch 监督的博士项目 (2019-23) 一起进行，该项目涉及数据驱动的方法，以改善中微子双 β 衰变核基质元素，该项目由伦敦大学学院数据密集科学领域的 STFC CDT 资助。经过初步培训后，学生将： 应用参数推断的统计技术，并对当前和预期中微子质量测量值进行更新的全局拟合 (Y1)；开发一个包含惰性中微子和有效算子的 EFT 框架，并将它们连接到可观测值（Y2）；详细分析惰性中微子的限制以及最有希望的未来测量的潜力，重点关注由于外来相互作用引起的修改（Y3）。