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.

我将研究新物理学的模型，这些模型与实验数据进行比较时，可以解决粒子物理学标准模型的缺点。在我的博士学位开始时，我将研究与天文粒子物理学相关的可观察物的模型，尤其是关于我们宇宙中观察到的暗物质的模型，或者是巴里昂与光子比率。为了得出对更广泛的模型有效的结论，我将使用最小的模型方法来处理，该方法涵盖了模型构建中的其他约束。 IE。例如，我将研究最小模型的扩展，这些模型是可恢复的，并模仿了新物理学的完整模型的现象学以及对新物理学的有效描述。这将使我能够研究天文粒子可观察物与基于实验的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，上述模型设置应该使我能够回答这个问题。作为一个初始项目，我将研究标准模型的单线扩展，并辅助右手中微子。这是一个可统一的模型，在参数空间的不同部分中可以具有暗物质，通过低尺度瘦素生成产生重子物质不对称，在早期宇宙中具有一阶电子相变，并在壁炉列中进行测试。我将研究中的几个可以在最小的框架中同时实现，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，他们提供了Astro-Paricer Physics，Collider物理学以及有效描述新物理学的专业知识。