Studies in Elementary Particle Physics

基本粒子物理研究

• 批准号: 0401688
• 负责人: Morris Swartz
• 金额: $ 30万
• 依托单位: Johns Hopkins University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2004
• 资助国家: 美国
• 起止时间: 2004-09-15 至 2005-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0401688&HistoricalAwards=false
• 关键词: Studies; Elementary; Particle; Physics

This proposal requests funds for a program of experimental particle physics research at the world's highest energy hadron colliders. The Johns Hopkins University (JHU) group would continue their collaboration in the CDF experiment at the Fermilab Tevatron and the CMS experiment at the CERN Large Hadron Collider (LHC). CDF is currently in a data-taking phase and is expected to run for a number of years. CMS is expected to begin operation in 2008. The specific scientific goals of the proposed program are to determine the source of electroweak spontaneous symmetry breaking and to make precise heavy quark measurements that constrain physics beyond the Standard Model. The initial program is concentrated at the Tevatron, where the short-term goal is to study heavy quark physics, since many theoretical mechanisms of spontaneous symmetry breaking include states that preferentially decay into heavy quarks or other long-lived states. The most accepted theoretical ideas currently suggest that mechanisms of spontaneous symmetry breaking should manifest themselves at the LHC. The JHU group contributes to the silicon-based vertex tracking of both experiments. This technology will permit the identification of long-lived states by searching for secondary vertices displaced from the primary vertex. The proposed work on silicon pixel detector technology has application to instrumentation used at synchrotron light sources to study materials and biological systems. In addition, the pixel simulation code may be applicable to infrared pixel sensors used in satellite-borne telescopes. The proposed work on distributed databases has strong overlap with work being done for several large astronomy projects and could also have far-reaching application in all sectors of society. The proposed research would provide direct support and training for a number of graduate and undergraduate students. JHU hosts a QuarkNet center and the group plans to work on a user-friendly web interface that will permit high school students to submit particle physics queries to the Open Science Grid. QuarkNet teachers will help in the design and debugging of the system with the longer-term goal of making the system available to the general public.

该提案要求在世界上最高能量的黑岩山以上的实验粒子物理研究计划中进行资金。约翰·霍普金斯大学（JHU）小组将继续他们在Fermilab Tevatron的CDF实验中的合作，并在CERN大型强生对撞机（LHC）的CMS实验中继续进行合作。 CDF目前处于数据研究阶段，预计将运行多年。预计CMS将于2008年开始运行。拟议程序的具体科学目标是确定Electroweak自发对称性破坏的来源，并进行精确的重型夸克测量值，以将物理学限制在标准模型之外。 最初的程序集中在Tevatron上，短期目标是研究重型夸克物理学，因为自发对称性破坏的许多理论机制包括优先腐烂到重型夸克或其他长寿状态的状态。 目前，最公认的理论思想表明，自发对称性破裂的机制应在LHC上表现出来。 JHU组有助于两个实验的基于硅的顶点跟踪。这项技术将通过寻找从主要顶点流离失所的二级顶点来识别长寿状态。 拟议的关于硅像素检测器技术的工作已应用于同步灯源用于研究材料和生物系统的仪器。此外，像素仿真代码可能适用于卫星传播望远镜中使用的红外像素传感器。在分布式数据库上的拟议工作与在几个大型天文学项目中所做的工作有着强烈的重叠，并且在社会各个部门也可能具有深远的应用。拟议的研究将为许多研究生和本科生提供直接的支持和培训。 JHU主办了一个Quarknet中心，该小组计划在用户友好的Web界面上工作，该界面将允许高中生向开放的科学网格提交粒子物理查询。 Quarknet教师将帮助系统的设计和调试，以使公众可用的系统可用。