A search for top quarks in proton-antiproton collisions using dileptons
Martin, Andrew James
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https://hdl.handle.net/2142/19653
Description
Title
A search for top quarks in proton-antiproton collisions using dileptons
Author(s)
Martin, Andrew James
Issue Date
1996
Doctoral Committee Chair(s)
Errede, Steven M.
Department of Study
Physics
Discipline
Physics
Degree Granting Institution
University of Illinois at Urbana-Champaign
Degree Name
Ph.D.
Degree Level
Dissertation
Keyword(s)
Physics, Elementary Particles and High Energy
Language
eng
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/$c\sp2.$
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