South East Particle Theory Alliance Sussex - Royal Holloway - UCL (SEPTA)

这项拟议的研究与苏塞克斯大学、皇家霍洛威大学和伦敦大学学院的粒子理论小组的科学家一起，在三个大标题下寻找新的物理：对撞机和低能量现象学：大型强子对撞机提出的能量前沿的粒子碰撞，允许产生或排除推测的数千倍于质子的新粒子。在强度前沿，对粒子相互作用的极其精确的测量允许以间接的方式探测更重的粒子。在这里，我们探索并结合两个方向，以比以往任何时候都更短的距离来解开世界的结构，提出这样的问题：是什么让已知的粒子比量子引力的普朗克质量轻得多？什么是暗物质？物质和力有统一的理论吗？我们如何才能最好地利用现在和未来的实验来照亮它们呢？粒子天体物理学和宇宙学：过去十年中最活跃的研究领域之一是粒子物理学和宇宙学之间的交界点。为了了解宇宙的历史，我们必须了解大爆炸初期的物理定律，当时温度和粒子能量都很大。相反，通过对今天宇宙的详细观察，我们可以追溯到条件，并对高能下的物理定律做出推断。我们的研究将解决有关宇宙的重大问题：为什么物质比反物质多？中微子和暗物质的本质是什么？我们能用引力波观测宇宙的最初几皮秒吗？新的量子技术如何被用来搜索暗物质和其他看不见的粒子？量子理论和引力如何结合在一起？我们能在宇宙中看到它们的联合效应吗？量子场论：最近的一项发现是，类似标准模型的理论可以是基本的和预测的，直到最高能量，而不是渐近自由的，这打开了一扇通往未知领域的大门。这些新颖的理论为UV完善标准模型提供了替代方法，并从一个全新的角度解决了它的开放挑战。我们的研究将集中于对这些新类型理论的系统评估，包括构建超越标准模型的基准模型。我们将这些研究与我们对广义相对论量子版本的持续探索结合在一起。这些情景的预测将与粒子对撞机和宇宙学的数据进行对比。

The proposed research joins scientists of the particle theory groups at Sussex, Royal Holloway and University College London in the hunt for new physics under three broad headings:Collider and Low Energy Phenomenology:Particle collisions at the energy frontier, presented by the Large Hadron Collider, allow to produce or rule out conjectured new particles thousands of times as heavy as the proton. At intensity frontier, extremely precise measurements of particle interactions allow to probe for even heavier particles in an indirect fashion. Here we explore and combine both directions to unravel the structure of the world at smaller distances than ever, asking questions such as: what makes the known particles so much lighter than the Planck mass of quantum gravity? What is Dark Matter? Is there a unified theory of matter and forces? And how can we best use present and future experiments to shine light on them?Particle Astrophysics and Cosmology:One of the most active areas of research in the past decade has been at the interface between particle physics and cosmology. In order to understand the history of the Universe we must understand physical laws in the first moments of the Big Bang, when temperatures and particle energies were huge. Conversely, by detailed observations of the universe today we can trace back the conditions and make deductions about physical laws at high energies. Our research will tackle big questions about the universe: Why is there more matter than antimatter? What is the nature of neutrinos and dark matter? Can we use gravitational waves to look at the first picoseconds of the universe? How can the new quantum technology be used to search for dark matter and other invisible particles? And how can quantum theory and gravity be combined, and can we see their joint effects in the cosmos?Quantum Field Theory:The recent discovery that Standard Model-like theories can be fundamental and predictive up to highest energies without being asymptotically free has opened a door into uncharted territory. These novel theories offer alternative ways to UV complete the Standard Model and to address its open challenges from an entirely new angle. Our research will focus on the systematic evaluation of these new types of theories, including the construction of benchmark models beyond the Standard Model. We combine these studies with our continuing quest towards a quantum version of general relativity. Predictions of these scenarios will be contrasted with data from particle colliders and cosmology.