TU-A6-2 10:30

Aspects Of High Luminosity Top-Quark Event Selection Using The Collider Detector At Fermilab*, Adrian Buzatu , McGill University, Montreal, Canada and the CDF Collaboration — This report discusses some aspects of top-quark event selection for the high luminosity regime at the Collider Detector at Fermilab. It is relevant to many analyses at the CDF RunII experiment at Fermilab that use proton antiproton collisions at a center of mass energy of 1.96 TeV in the Tevatron accelerator. A top quark decays almost 100% of the time into one W boson and one bottom quark. We look at the particular channel where one W boson decays leptonically and the second W decays hadronically. An overview of the CDF detector, top quark physics and event selection criteria will be given. Instantaneous luminosity improvements in the Tevatron are resulting in greater numbers of events with more than one interaction vertex. Improving our ability to identify the best primary vertex candidate for a top quark event is essential for both the Tevatron and the Large Hadron Collider. A method of systematic study of possible vertex selection criteria is presented.

* This work is being supported by NSERC

* This work is being supported by NSERC