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 Title: A search for top quarks in proton-antiproton collisions using dileptons Author(s): Martin, Andrew James Doctoral Committee Chair(s): Errede, Steven M. Department / Program: Physics Discipline: Physics Degree Granting Institution: University of Illinois at Urbana-Champaign Degree: Ph.D. Genre: Dissertation Subject(s): Physics, Elementary Particles and High Energy Abstract: A search for tt pairs in pp collisions with a center of mass energy $\sqrt s$ = 1.8TeV is presented. The analysis looks for tt pairs which decayed through the chain $\bar {tt}\to W\sp+bW\sp-\bar b\to\ell\sp+\bar \nu b\ell\sp-\nu\bar b$ where one of the b quarks is explicitly identified. In a sample of 109.4 $\pm$ 7.2 pb$\sp{-1}$ of data, 6 tags in 4 events are found with an expected background of 1.53 $\pm$.33 events. This results in an estimated production cross section of 4.6$\sbsp{-3.1}{+4.4}$ pb at $m\sb{top}$ = 175 GeV/$c\sp2.$ Issue Date: 1996 Type: Text Language: English URI: http://hdl.handle.net/2142/19653 ISBN: 9780591088700 Rights Information: Copyright 1996 Martin, Andrew James Date Available in IDEALS: 2011-05-07 Identifier in Online Catalog: AAI9702600 OCLC Identifier: (UMI)AAI9702600
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