Top Quark Physics using the Collider Detector at Fermilab

使用费米实验室的对撞机探测器进行顶级夸克物理学

• 批准号: 0355078
• 负责人: Kirsten Tollefson
• 金额: $ 44.41万
• 依托单位: Michigan State University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2004
• 资助国家: 美国
• 起止时间: 2004-08-01 至 2007-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0355078&HistoricalAwards=false
• 关键词: Top; Quark; Physics; using; Collider

This proposal requests funds to support a new assistant professor in the experimental high energy physics group at Michigan State University. The Principal Investigator plans to continue her research on top quark physics using the Collider Detector at Fermilab (CDF). The CDF experiment was one of two experiments at the Fermilab Tevatron to announce the discovery of the top quark in 1995. Because of the top quark's large mass, precision measurements of its properties provide an exciting place to look for deviations from the Standard Model, help explain mass generation and give an indication of new physics beyond the Standard Model. The PI's research group is currently working on a new algorithm for defining jets, which are sprays of particles from the decay of quarks and gluons, in the CDF detector. This work leads to the study of bottom-quark jets coming from top-quark decays. The identification of bottom versus anti-bottom quark jets allows the jets to explicitly be linked to the top and anti-top quarks and is crucial for several measurements. For Fermilab Run II, the PI has made commitments to help maintain the Level-3 trigger software and to validate new triggers. In addition, she will upgrade the current silicon detector's interlock system to comply with the new ANSI safety standards. The PI is actively including undergraduates and underrepresented groups in her research program and plans to participate in the QUARKNET program.

这项提案要求资金支持密歇根州立大学实验高能物理小组的一名新助理教授。首席研究员计划继续使用费米实验室(CDF)的对撞机探测器对顶夸克物理进行研究。CDF实验是费米实验室Tevatron在1995年宣布发现顶夸克的两个实验之一。由于顶夸克的质量很大，对其性质的精确测量为寻找与标准模型的偏差提供了一个令人兴奋的地方，有助于解释质量的产生，并给出标准模型以外的新物理的指示。PI的研究小组目前正在研究一种新的算法，用于定义CDF探测器中的喷注，即夸克和胶子衰变产生的粒子喷雾。这项工作导致了对来自顶夸克衰变的底夸克喷注的研究。底部和反底夸克喷注的识别允许喷流明确地与顶夸克和反顶夸克联系在一起，这对一些测量是至关重要的。对于Fermilab Run II，PI承诺帮助维护Level-3触发器软件并验证新的触发器。此外，她还将升级目前硅探测器的联锁系统，以符合新的ANSI安全标准。PI正在积极地将本科生和代表不足的群体纳入她的研究计划，并计划参加QUARKNET计划。