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Research in Particle Physics Phenomenology

粒子物理现象学研究

基本信息

批准号：
2114404
负责人：
金额：
--
依托单位：
Durham University
依托单位国家：
英国
项目类别：
Studentship
财政年份：
2018
资助国家：
英国
起止时间：
2018 至无数据
项目状态：
已结题

来源：
https://gtr.ukri.org/projects?ref=studentship-2114404
关键词：
Research Particle Physics Phenomenology

项目摘要

Understanding the physics at the smallest scale and high energy is one of the major present challenges in particle theory. If there are new forces beyond those of the Standard Model, there should be new particles and we should be able to create the new particles at the Large Hadron Collider. In many scenarios that have been proposed, the new particles are very difficult to find because the cross section for making them is small and the structure of new physics signal events looks rather similar to that of Standard Model events that have larger cross sections. Thus one needs to distinguish signal events corresponding to a new physics scenario that one is trying to find from similar Standard Model background events. To best do this, we need to use differences between signal and background in the detailed substructure of the events. For this purpose novel reconstruction techniques have been proposed. The aim of this project is to develop new jet substructure techniques to improve on search strategies for new resonances and to improve measurements of the resonance's properties. To test the success of the newly developed techniques, the project will entail the simulation of new physics scenarios using full event generators. Because of the timeliness of the project a strong interaction with experimental groups is envisioned. The Institute of Particle Physics Phenomenology (IPPP) in Durham has an outstanding expertise in the novel field of jet substructure and in developing search strategies for new physics resonances. Therefore, it is an ideal place for this timely project.

了解最小尺度和高能下的物理学是粒子理论当前面临的主要挑战之一。如果有超出标准模型的新的力，应该有新的粒子，我们应该能够在大型强子对撞机上创造新的粒子。在许多已经提出的方案中，新粒子很难找到，因为制造它们的横截面很小，新物理信号事件的结构看起来与具有更大横截面的标准模型事件非常相似。因此，人们需要区分信号事件对应于一个新的物理场景，人们试图从类似的标准模型背景事件中找到。为了最好地做到这一点，我们需要在事件的详细子结构中使用信号和背景之间的差异。为此目的，已经提出了新颖的重建技术。该项目的目的是开发新的射流子结构技术，以改进新共振的搜索策略，并改进共振特性的测量。为了测试新开发的技术是否成功，该项目将需要使用完整的事件发生器模拟新的物理场景。由于该项目的及时性，预计将与实验小组进行强有力的互动。位于达勒姆的粒子物理现象学研究所（IPPP）在射流子结构的新领域和开发新物理共振的搜索策略方面具有杰出的专业知识。因此，它是这个及时项目的理想场所。