The CDF II experiment

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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.