Particle Physics at High Energy Colliders

这项提案要求资金支持密歇根州立大学一个小组的高能物理研究，该小组正在参与CDF和ATLAS，这两个探索能源前沿的实验。费米实验室Tevatron的CDF实验正在研究质子-反质子碰撞。这些研究已经产生了许多重要的结果，包括顶夸克的发现，对其质量的精确测量，以及在目前可获得的最高横向能量下的喷注截面的测量。CDF探测器已经进行了广泛的升级，以充分利用RUN II中增加的能量(1.8到1.96TeV)和增加的光度，该小组为升级做出了重大贡献。该小组正在研究重夸克、电弱粒子、量子色动力学(QCD)，并使用目前比前一次运行中的数据样本大3-4倍的数据样本来寻找新现象。该小组还致力于开发新的物理工具，特别是用于分析QCD现象，这将是充分利用Run II数据以及利用瑞士日内瓦附近的CERN大型强子对撞机(LHC)下一代实验所需的数据所必需的。该小组在ATLAS大型强子对撞机实验上的主要重点一直是建造和测试强子量热计的部分。该小组正在设计、建造和安装用于触发和计时的闪烁体平面，并正在安装探测器。该小组参与了试点研究，以最大限度地提高从ATLAS早期运行中提取的物理学知识。更广泛的影响：这一群体包括本科生和高中科学教师，以及他们的学生，参与研究活动。他们参与了QUARKNET项目，目的是与许多年轻学生分享发现粒子物理的兴奋。

This proposal requests funds to support the High Energy Physics research of a group at Michigan State University that is participating in CDF and ATLAS, two experiments probing the energy frontier. The CDF experiment at Fermilab's Tevatron is studying proton-antiproton collisions. These studies have yielded a number of important results including the discovery of the top quark, an accurate measurement of its mass, and the measurement of the jet cross section at the highest transverse energies currently accessible. The CDF detector has been extensively upgraded to take full advantage of the increased energy (1.8 to 1.96 TeV) and the increased luminosity present in Run II and this group has made major contributions to the upgrades. The group is working on studies of heavy quarks, electroweak particles, Quantum ChromoDynamics (QCD) and searches for new phenomena with a data sample that is currently a factor of 3-4 larger than that taken in the previous run. The group is also contributing to the development of new physics tools, especially for the analysis of QCD phenomena, that will be necessary to fully exploit the Run II data as well as to exploit the data to be taken by the next generation of experiments at the CERN Large Hadron Collider (LHC) near Geneva, Switzerland. The main focus of this group on the ATLAS LHC experiment has been the construction and testing of parts of the hadron calorimeter. The group is designing, building and installing scintillator planes to be used for triggering and timing and is working on the installation of the detector. The group is involved in pilot studies to maximize the physics extracted from the early running of ATLAS. Broader impacts: The group includes undergraduates and high school science teachers, and their students, in research activities. They are participating in the QUARKNET program with the goal of sharing the excitement of discovery in particle physics with many young students.