The CDF II experiment

费米实验室的对撞机探测器（CDF）实验使得能够研究质心能量接近2 TeV的最高能量质子-反质子碰撞。CDF合作由来自15个国家的科学家组成，其中包括一组隶属于粒子物理研究所（IPP）的加拿大物理学家。IPP小组于1991年加入CDF，进入Run I数据采集阶段，该阶段的亮点是发现了顶夸克。在运行II中，费米实验室的Tevatron对撞机和CDF设备的性能一直很高，峰值亮度超过3E 32/cm^2/s，数据采集效率接近90%，使我们能够收集和处理超过4/fb的数据。目前的Tevatron运行预计将于2010年结束，预计综合光度几乎是迄今为止处理的两倍。IPP-加拿大小组目前正在领导或从事以下研究：b-喷流产生、b-强子碎裂、单顶夸克产生、寻找奇异的W'和Z'玻色子、精确测量W玻色子质量、寻找低质量标准模型希格斯玻色子，以及光生夸克偶素或双光子QED相互作用的唯一终态。在这个广泛的范围内的主题的结果都是独特的和互补的，可以实现使用ATLAS实验在大型强子对撞机（LHC）在欧洲核子研究中心。 随着目前LHC的投入使用，加拿大对CDF的总体参与一直在减少，因为科学资源自然地被重新定向到加拿大的大型ATLAS工作中。目前的建议是为加拿大四个机构的研究人员提供业务支持，这些研究人员最近（2003年和2008年）加入了加拿大CDF II的工作，因此能够以补充LHC不断加强的努力的方式完成NSERC对CDF II实验及其物理学的投资。这将使我们的研究生和研究人员能够履行他们对CDF的服务义务，直到数据采集终止，并在Tevatron计划历史上一些最令人兴奋的物理学将被探索的时候完成几个遗留物理学分析。

The Collider Detector at Fermilab (CDF) experiment is enabling the study of the highest energy proton-antiproton collisions at a centre-of-mass energy near 2 TeV. The CDF collaboration consists of scientists from 15 countries, including a group of Canadian physicists affiliated with the Institute of Particle Physics (IPP). The IPP group joined CDF in 1991 for the Run I datataking period, which had as its highlight the discovery of the top quark. In Run II, performance of the Fermilab Tevatron collider and CDF apparatus have been high with peak luminosities in excess of 3E32/cm^2/s and data-taking efficiencies near 90%, enabling us to collect and process over 4/fb of data to date. The current Tevatron run is envisaged to end in 2010, with a projected integrated luminosity nearly twice that processed so far. The IPP-Canada group is currently leading or engaged in studies of b-jet production, b-hadron fragmentation, single-top-quark production, searches for exotic W' and Z' bosons, precision measurements of the W boson mass, the search for the low-mass Standard Model Higgs boson, and exclusive final states from photo-produced quarkonia or two-photon QED interactions. Results from topics in this broad range are both unique and complementary to what can be achieved using the ATLAS experiment at the Large Hadron Collider (LHC) at CERN. With the current commissioning of the LHC, overall Canadian involvement in CDF has been ramping down as scientific resources have naturally been redirected to the large Canadian ATLAS effort. The present proposal is for operating support of groups at four Canadian institutions consisting of researchers that joined the Canadian CDF II effort more recently (in 2003 and 2008) and are therefore well positioned to complete the capitalization of NSERC's investment in the CDF II experiment and its physics in a manner that is complementary to the intensifying LHC effort. This will allow our graduate students and researchers to meet their service obligations to CDF up to the termination of data taking and to complete several legacy physics analyses at a time when some of the most exciting physics in the history of the Tevatron program will be explored.