在大型强子对撞机和宇宙学中探索新物理

The Large Hadron Collider (LHC) has been operating and particle physics has entered into a Golden era where we are exposed to large amount of new data. In this project, we will focus on the key questions of fundamental particle physics based on LHC data, for instance, the origin of the mass, the property of electroweak phase transition, the origin of baryon asymmetry. On one hand, we discussed some most popular models in the market: the composite Higgs models when they are compared with real LHC data, and propose new extensions to make the models better, and get connected to possible anomalies that might hint for new physics. On the other hand, we also make connections between the LHC data and the new physics in the early cosmology, predict possible new collider signals at the LHC in the future and propose new methods to discover new physics. In particle, we will focus on the measurements of Higgs self-interaction, which is related to the electroweak phase transition property and CP violation, which is related to baryogenesis.

大型强子对撞机LHC已经开始运转，粒子物理将进入一个拥有大量数据的黄金时代. 本研究主要是围绕着LHC上的实验数据去探索当前基础理论的核心重大问题, 比如质量起源, 电弱相变性质,宇宙早期正反粒子不对称起源. 一方面是根据当前LHC实验数据, 讨论当前最热门的模型, 比如复合黑格斯粒子模型和超对称模型的维象学, 并提出模型在这些框架下新的发展， 并结合可能的实验新物理信号进行解释讨论. 另一方面, 是把这些通过实验数据了解的新物理和宇宙学联系起来, 并且预言未来在LHC上可能的新物理现象和提出一些新的测量方法. 具体而言主要是黑格斯粒子自相互作用的测量(决定了电弱相变性质)和CP破坏的测量(决定了宇宙早期正反粒子不对称数).

本研究主要是围绕着实验数据去探索当前基础理论的核心重大问题, 比如质量起源, 电弱相变性质,宇宙早期正反粒子不对称起源，极轻暗物质的研究和探测. 一方面是根据当前实验数据, 讨论当前最热门的模型之一, 复合黑格斯粒子模型, 并提出新的对称性模型在这些框架下新的发展. 另一方面, 是把这些通过实验数据了解的新物理和宇宙学联系起来, 并且预言未来可能的新物理现象和提出一些新的测量方法. 具体而言主要是引力波(决定了电弱相变性质), CP破坏的测量(决定了宇宙早期正反粒子不对称数)和射电天文学的观测(极轻暗物质的探测)。