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Measurement of the W+W- production cross section in pp̄ collisions at s=1.96TeV using dilepton events

  • DØ Collaboration
  • Joint Institute for Nuclear Research
  • University of Oklahoma
  • Michigan State University
  • Tata Institute of Fundamental Research
  • University of Illinois at Chicago
  • Florida State University
  • CEA Saclay
  • Université de Strasbourg
  • Université de Haute-Alsace
  • Korea University
  • Kansas State University
  • Petersburg Nuclear Physics InstituteGatchina
  • University of Michigan, Ann Arbor
  • Northeastern University
  • Centro Brasileiro de Pesquisas Físicas
  • Radboud University Nijmegen
  • Northwestern University
  • University of Arizona
  • Universités Paris VI and VII
  • Laboratoire de Physique Subatomique et de Cosmologie de Grenoble
  • Lund University
  • Stockholm University
  • Uppsala University
  • Universidade do Estado do Rio de Janeiro
  • Iowa State University
  • RWTH Aachen University
  • Universidad de los Andes Colombia
  • Université Blaise Pascal
  • University of Maryland, College Park
  • Fermi National Accelerator Laboratory
  • University of Amsterdam
  • Rice University
  • University of Kansas
  • Imperial College London
  • Indiana University Bloomington
  • University of Rochester
  • University of Nebraska-Lincoln
  • Panjab University
  • University of Zurich
  • Lancaster University

Research output: Contribution to journalArticlepeer-review

40 Scopus citations

Abstract

We present a measurement of the W+W- production cross section using 184pb-1 of pp̄ collisions at a center-of-mass energy of 1.96 TeV collected with the Collider Detector at Fermilab. Using the dilepton decay channel W+W-→ℓ+νℓ-ν̄, where the charged leptons can be either electrons or muons, we find 17 candidate events compared to an expected background of 5.0-0.8+2.2 events. The resulting W+W- production cross-section measurement of σ(pp̄→W+W-)=14.6-5.1+5.8(stat)-3.0+1.8(syst) ±0.9(lum)pb agrees well with the standard model expectation.

Original languageEnglish
Article number211801
JournalPhysical Review Letters
Volume94
Issue number21
DOIs
StatePublished - Jun 3 2005

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