Beyond Minimal Models in Astroparticle Physics and LHC phenomology

超越天体粒子物理学和大型强子对撞机现象学的最小模型

• 批准号: 2639719
• 金额: --
• 依托单位: University of Liverpool
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2021
• 资助国家: 英国
• 起止时间: 2021 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2639719
• 关键词: Beyond; Minimal; Models; Astroparticle; Physics

I will work on models of new physics that address shortcomings of the standard model of particle physics when its predictions are compared with experimental data. In the beginning of my PhD, I will study models that address observables related to astro-particle physics, in particular on the observed dark matter in our universe or the baryon to photon ratio. To arrive at conclusions that are valid for a wider class of models, I will work on a minimal model approach that encompasses additional constraints from model building. I.e. I will, for example, work on extensions of minimal models that are renormalisable and mimic the phenomenology of complete models of new physics and on effective descriptions of new physics. This will enable me to study correlations of astro-particle observables with data gathered from lab based experiments. An open research question is the generalisability of these correlations and the above described model setup should allow me to answer this question. As a starting project, I will be looking into singlet extension of the standard model coupled to right-handed neutrinos. This is a renormalisable model that in different parts of the parameter space can feature dark matter, produce baryon asymmetry via low scale leptogenesis, feature a first-order electroweak phase transition in the early universe, and be testable at colliders. I will study if several of these can be achieved simultaneously in the minimal framework and produce interesting experimental signals, and potential extensions of the minimal framework. The project will be supervised by Tommi Alanne (40%), Oliver Fischer (20%) and Martin Gorbahn (40%), who provide the expertise in astro-paricle physics, collider physics, and effective descriptions of new physics.

我将研究新物理模型，在将其预测与实验数据进行比较时，解决粒子物理标准模型的缺点。在我的博士学位开始时，我将研究解决与天体粒子物理学相关的可观察量的模型，特别是在我们的宇宙中观察到的暗物质或重子与光子的比率。为了得出对更广泛的模型类别有效的结论，我将研究一种最小模型方法，其中包含模型构建的附加约束。 IE。例如，我将致力于可重整化的最小模型的扩展，并模仿新物理学完整模型的现象学以及新物理学的有效描述。这将使我能够研究天体粒子可观测值与实验室实验收集的数据的相关性。一个开放的研究问题是这些相关性的普遍性，上述模型设置应该可以让我回答这个问题。作为一个起始项目，我将研究与右手中微子耦合的标准模型的单线态扩展。这是一个可重整化模型，在参数空间的不同部分可以表征暗物质，通过低尺度轻子生成产生重子不对称性，表征早期宇宙中的一阶电弱相变，并且可以在对撞机上进行测试。我将研究其中的几个是否可以在最小框架中同时实现并产生有趣的实验信号以及最小框架的潜在扩展。该项目将由 Tommi Alanne (40%)、Oliver Fischer (20%) 和 Martin Gorbahn (40%) 监督，他们提供天体粒子物理学、对撞机物理学和新物理学的有效描述方面的专业知识。