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A Search for Top Quarks in $$\bar{P}P$$ Collisions Using Dileptons

Thesis/Dissertation ·
DOI:https://doi.org/10.2172/1421746· OSTI ID:1421746
A search for $$t\bar{t}$$ pairs in $$\bar{p}p$$ collisions with a center of mass energy $$\sqrt{s}$$ = 1.8 TeV is presented. The analysis looks for $$t\bar{t}$$ pairs which decayed through the chain $$t\bar{t} \to W^+ bW^- \bar{b} \to \ell^+ \bar{\nu}b\ell^- \nu\bar{b}$$ where one of the $$b$$ quarks is explicitly identified. In a sample of 109.4 ± 7.2 $$pb^{-1}$$ of data, 6 tags in 4 events are found with an expected background of 1.53 ± .33 events. 2 This results in an estimated production. cross section of 4.6$$^{+4.4}_{-3.1}$$ pb at $$m_{top}$$ = 175 GeV/$c^2$
Research Organization:
Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
Sponsoring Organization:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
DOE Contract Number:
AC02-07CH11359
OSTI ID:
1421746
Report Number(s):
FERMILAB-THESIS-1996-44; 435661
Country of Publication:
United States
Language:
English

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