South-Eastern Particle Theory Alliance Sussex - RHUL - UCL 2017-2020 - Sussex node

东南粒子理论联盟苏塞克斯 - RHUL - UCL 2017-2020 - 苏塞克斯节点

• 批准号: ST/P000819/1
• 负责人: Stephan Huber
• 金额: $ 81.16万
• 依托单位: University of Sussex
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2017
• 资助国家: 英国
• 起止时间: 2017 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=ST%2FP000819%2F1
• 关键词: South; Eastern; Particle; Theory; Alliance

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:The Large Hadron Collider boosts elementary particles to velocities so close to that of light that their effective mass grows by a factor of a billion. By smashing these particles together there are new discoveries to be made, and new theories of physics to test. We will work on the complex task of relating the debris of these collisions to the new models put forward by theorists to explain some of the most puzzling questions of the universe - what is the origin of mass? and is there a quantum theory of gravity? Particle astrophysics and cosmology:One of the most active areas of research in the past decade has been at the interface between particle physics andcosmology. 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? is there any evidence out there for strings or other cosmic defects? and can we understand the history of the universe from the epoch of inflation until the present day in one overarching theory?Fixed points of 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.

拟议的研究与萨塞克斯郡，皇家霍洛威和伦敦大学学院的粒子理论小组的科学家一起寻找了三个宽标题下的新物理学：对撞机和低能现象学：大型强子对撞机将基本颗粒提升到速度，以使其接近光线的速度，以至于它们的有效质量以数十亿个因素而生长。通过将这些粒子粉碎在一起，可以制定新的发现，以及可以测试的新理论。我们将处理将这些碰撞碎片与理论家提出的新模型联系起来的复杂任务，以解释宇宙中一些最令人困惑的问题 - 弥撒的起源是什么？并且有重力理论吗？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一一直是粒子物理学和术语之间的界面。为了了解宇宙的历史，我们必须在大爆炸的第一刻内了解物理定律，而温度和粒子能量很大。相反，通过对当今宇宙的详细观察，我们可以追溯情况下的条件并在高能量下对物理定律进行推论。我们的研究将解决有关宇宙的大问题：为什么比反物质还要多的事情要多？中微子和暗物质的本质是什么？有没有证据表明弦或其他宇宙缺陷？我们能否了解从通货膨胀时期到今天的宇宙历史，直到一个总体理论？量子场理论的固定点：最近的发现，标准模型式理论可以是基本的，并且可以预测到最高能量，而无需渐近的自由无渐近地进入了未知领域。这些新颖的理论提供了紫外线完成标准模型的替代方法，并从全新的角度应对其开放挑战。我们的研究将集中于对这些新类型理论的系统评估，包括超出标准模型的基准模型的构建。我们将这些研究与对量子相对论的量子版本的持续追求相结合。这些场景的预测将与粒子山脉和宇宙学的数据形成鲜明对比。

项目成果

Four-lepton production in gluon fusion at NLO matched to parton showers

• DOI: 10.1140/epjc/s10052-021-09470-5
• 发表时间: 2021-02
• 期刊: The European Physical Journal C
• 作者: S. Alioli;S. F. Ravasio;J. Lindert;R. Röntsch

Challenges and opportunities of gravitational-wave searches at MHz to GHz frequencies

• DOI: 10.1007/s41114-021-00032-5
• 发表时间: 2021-12-01
• 期刊: LIVING REVIEWS IN RELATIVITY
• 影响因子: 40.6
• 作者: Aggarwal, Nancy;Aguiar, Odylio D.;White, Graham
• 通讯作者: White, Graham

Gravitational Waves at Strong Coupling from an Effective Action.

有效作用强耦合下的引力波。

• DOI: 10.1103/physrevlett.128.131101
• 发表时间: 2022
• 期刊: Physical review letters
• 影响因子: 8.6
• 作者: Ares FR

Thermal suppression of bubble nucleation at first-order phase transitions in the early Universe

• DOI: 10.1103/physrevd.106.023505
• 发表时间: 2022-05
• 期刊: Physical Review D
• 影响因子: 5
• 作者: M. A. Ajmi;M. Hindmarsh

Near-to-planar three-jet events at NNLL accuracy

NNLL 精度的近平面三喷流事件

• DOI: 10.1007/jhep07(2020)171
• 发表时间: 2020
• 期刊: Journal of High Energy Physics
• 影响因子: 5.4
• 作者: Arpino L