Top Quark Physics using the Collider Detector at Fermilab

这项提案要求资金支持密歇根州立大学实验高能物理组的一名新助理教授。 首席研究员计划使用费米实验室（CDF）的对撞机探测器继续她对顶夸克物理学的研究。 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。 由于顶夸克的大质量，对其性质的精确测量为寻找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，并给出超越标准模型的新物理学的指示。 PI的研究小组目前正在研究一种新的算法来定义喷流，喷流是CDF探测器中夸克和胶子衰变产生的粒子喷雾。 这项工作导致研究底夸克喷注来自顶夸克衰变。 底夸克喷注与反底夸克喷注的识别使得喷注可以明确地与顶夸克和反顶夸克联系起来，这对几次测量至关重要。 对于费米实验室运行II，PI承诺帮助维护3级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积极将本科生和代表性不足的群体纳入她的研究计划，并计划参加QUARKNET计划。

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.