CAREER: Top-Quark Physics, Computing and Software at the Large Hadron Collider

该计划是为了在欧洲核子研究中心的大型强子对撞机（LHC）上使用CMS探测器研究顶夸克物理。这种夸克，基于费米实验室的Tevatron的数据，其行为与粒子物理学的标准模型一致。然而，由于Tevatron的能量和亮度适中，可以研究的顶夸克数量很少，迄今为止的测试不是很严格。在运行初期，LHC将以100倍于Tevatron的速率产生顶夸克，最终以1000倍于Tevatron的速率产生顶夸克。这些数据率所实现的精确测量可以揭示新的物理学，或者导致对这个异常重的物体的标准模型的精确验证。PI已经制定了一个策略，用于开发在CMS研究顶夸克所需的工具，用于在最初的努力中使用它们来理解和校准CMS探测器，并执行一个物理程序，其中包括测量顶夸克质量，CKM耦合（单顶），顶夸克的自旋，以及寻找t-tbar-Higgs和稀有衰变。该提案的一个技术重点是为美国CMS建立一个二级计算中心。CMS Tier-2中心将执行整体计算任务的重要部分，对物理分析至关重要。PI是美国CMS计算项目执行团队的成员，负责Tier-2中心的实施。第三个组成部分是一个教育和推广计划，旨在鼓励内布拉斯加州农村社区的年轻人从事科学事业。对这一拟议活动的创建进行了深思熟虑的分析，认为应该有基准来评估方案的有效性，这一想法很重要。

This proposal is for the study of top quark physics at the Large Hadron Collider (LHC) at CERN using the CMS detector. This quark, based on data from the Tevatron at Fermilab, behaves in a manner consistent with the Standard Modelof Particle Physics. Due to the modest energy and luminosity of the Tevatron, however, the number of top quarks that can be studied is small and the tests to date are not very stringent. Early in its operation, the LHC will produce top quarks at 100 times the Tevatron's rate and eventually at one thousand times the Tevatron's rate. The precise measurements enabled by these data rates could reveal new physics or result in a precise validation of the Standard Model for this unusually heavy object. The PI has mapped out a strategy for developing tools that are required to study the top quark at CMS, for using them in the initial effort to understand and calibrate the CMS detector, and for executing a program of physics which includes measurement of the top quark mass, CKM couplings (single top), spin of the top quark, and search for t-tbar-Higgs and rare decays. A technical thrust of the proposal is to lead an effort to establish a Tier-2 computing center for US CMS. The CMS Tier-2 centers will carry out a significant part of the overall computing task and will be crucial to the physics analysis. The PI is the member of the project execution team for US CMS computing and is in charge of the Tier-2 center implementation. The third component is an education and outreach program directed at encouraging young people in rural communities in Nebraska to embark on careers in science. A thoughtful analysis went into the creation of this proposed activity and the idea that there should be benchmarks to evaluate the effectiveness of the program is significant.