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Measurement of the t(t)over-bar production cross section in p(p)over-bar collisions using dilepton events
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2007 (English)In: Physical Review D - Particles, Fields, Gravitation and Cosmology, ISSN 1550-7998, Vol. 76, no 5, 052006-1-052006-28 p.Article in journal (Refereed) Published
Abstract [en]

We present a measurement of the t (t) over bar pair production cross section in p (p) over bar collisions at root s=1.96 TeV utilizing approximately 425 pb(-1) of data collected with the D0 detector. We consider decay channels containing two high p(T) charged leptons (either e or mu) from leptonic decays of both top-daughter W bosons. These were gathered using four sets of selection criteria, three of which required that a pair of fully identified leptons (i.e., e mu, ee, or mu mu) be found. The fourth approach imposed less restrictive criteria on one of the lepton candidates and required that at least one hadronic jet in each event be tagged as containing a b quark. For a top quark mass of 175 GeV, the measured cross section is 7.4 +/- 1.4(stat)+/- 1.0(syst) pb and for the current Tevatron average top quark mass of 170.9 GeV, the resulting value of the cross section is 7.8 +/- 1.8(stat+syst) pb.

Place, publisher, year, edition, pages
2007. Vol. 76, no 5, 052006-1-052006-28 p.
Keyword [en]
TOP-QUARK PRODUCTION, PARTON DISTRIBUTIONS, DETECTOR, PHYSICS
National Category
Subatomic Physics
Identifiers
URN: urn:nbn:se:kth:diva-35459DOI: 10.1103/PhysRevD.76.052006ISI: 000249786800013Scopus ID: 2-s2.0-34848837024OAI: oai:DiVA.org:kth-35459DiVA: diva2:428568
Note
QC 20110630Available from: 2011-06-30 Created: 2011-06-30Bibliographically approved

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Strandberg, Jonas

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Clément, ChristopheGollub, NilsHansson, PerStrandberg, Jonas
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CiteExportLink to record
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Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
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More styles
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  • de-DE
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Output format
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