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Measurement of the tt̄ production cross section in pp̄ collisions at √s = 1.96 TeV in dilepton final states
  • Universidad de Buenos Aires
  • Centro Brasileiro de Pesquisas Físicas (CBPF)
  • Universidade do Estado do Rio de Janeiro (UERJ)
  • Universidade Estadual Paulista (UNESP)
  • University of Alberta
  • Simon Fraser University
  • York University
  • McGill University
  • Institute of High Energy Physics
  • University of Science and Technology of China
  • Universidad de los Andes
  • Charles University
  • Czech Technical University
  • Academy of Sciences of the Czech Republic
  • Universidad San Francisco de Quito
  • Université Blaise Pascal
  • Universite de Grenoble 1
  • Université de la Méditerranée
  • Laboratoire de l'Accélérateur Linéaire
  • Universités Paris VI and VII
  • CEA
  • Université Louis Pasteur
  • Université de Haute Alsace
  • Université Claude Bernard
  • RWTH Aachen University
  • Universität Bonn
  • Universität Freiburg
  • Universität Mainz
  • Ludwig-Maximilians-Universität München
  • University of Wuppertal
  • Panjab University
  • Delhi University
  • Tata Institute of Fundamental Research
  • University College Dublin
  • Korea University
  • University of Amsterdam/NIKHEF
  • Joint Institute for Nuclear Research
  • Institute for Theoretical and Experimental Physics (ITEP)
  • Moscow State University
  • Institute for High Energy Physics
  • Petersburg Nuclear Physics Institute
  • Lund University
  • Stockholm University
  • Uppsala University
  • Lancaster University
  • Imperial College
  • University of Manchester
  • University of Arizona
  • University of California
  • California State University
  • Florida State University
  • Fermi National Accelerator Laboratory
  • University of Illinois at Chicago
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  • Northwestern University (NU)
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  • University of Kansas (KU)
  • Kansas State University
  • Louisiana Tech University
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  • State University of New York
  • Brookhaven National Laboratory
  • Langston University
  • University of Oklahoma
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  • University of Texas
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  • University of Virginia (UVA)
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  • University of Zurich
We present a measurement of the top quark pair (tt̄) production cross section in pp̄ collisions at √s=1.96 TeV using events with two charged leptons in the final state. This analysis utilizes an integrated luminosity of 224-243 pb-1 collected with the DØ detector at the Fermilab Tevatron Collider. We observe 13 events in the e+e -, eμ and μ+μ- channels with an expected background of 3.2±0.7 events. For a top quark mass of 175 GeV, we measure a tt̄ production cross section of σtt̄=8. 6-2.7 +3.2(stat)±1.1(syst)±0.6(lumi) pb, consistent with the standard model prediction. © 2005 Elsevier B.V. All rights reserved.
Issue Date: 
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, v. 626, n. 1-4, p. 55-64, 2005.
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Appears in Collections:Artigos, TCCs, Teses e Dissertações da Unesp

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