Measurement of the W+W- cross section in √s=7 TeV pp collisions with ATLAS

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Contributors

  • The ATLAS collaboration - , University of Bucharest, iThemba Laboratory for Accelerator Based Sciences, University of Pretoria, University of South Africa, University of Zululand, Cadi Ayyad University, New York University Abu Dhabi, University of Granada, CERN, University of California at Berkeley, University of Georgia (Tbilisi), Yeditepe University, Mohammed VI Polytechnic University (Author)
  • Anja Vest - , Chair of Particle Physics (Author)
  • Frank Seifert - , Chair of Particle Physics (Author)
  • Chair of Nuclear Physics
  • Central Unit Faculty of Physics
  • Juniorprofessor for Experimental Particle Physics (Helmholtz-Juniorprofessor)
  • University of Freiburg
  • University of Oklahoma
  • Autonomous University of Barcelona
  • University of Geneva
  • University of Oxford
  • Azerbaijan National Academy of Sciences (ANAS)
  • Oklahoma State University
  • Michigan State University
  • Tel Aviv University
  • Université Paris-Saclay
  • National Institute for Nuclear Physics
  • University of Milan
  • Abdus Salam International Centre for Theoretical Physics
  • Brookhaven National Laboratory
  • Hampton University
  • Yale University
  • Max Planck Institute for Physics (Werner Heisenberg Institute)
  • Ludwig Maximilian University of Munich
  • Queen Mary University of London
  • Rutherford Appleton Laboratory
  • Brandeis University
  • Johannes Gutenberg University Mainz
  • Boston University
  • Stony Brook University
  • University of Texas at Dallas
  • University of Rome Tor Vergata
  • Bogazici University
  • Lund University
  • The University of Tokyo
  • RAS - P.N. Lebedev Physics Institute
  • Kobe University
  • State University of New York at Albany
  • Royal Holloway University of London
  • SLAC National Accelerator Laboratory
  • University of Science and Technology of China (USTC)
  • Academia Sinica Taiwan
  • University of Wisconsin-Madison
  • University of Texas at Arlington

Abstract

This Letter presents a measurement of the W⊃+W⊃- production cross section in √s=7TeV pp collisions by the ATLAS experiment, using 34pb⊃-1 of integrated luminosity produced by the Large Hadron Collider at CERN. Selecting events with two isolated leptons, each either an electron or a muon, 8 candidate events are observed with an expected background of 1.7±0.6 events. The measured cross section is 41-16+20(stat) ±5(syst)±1(lumi)pb, which is consistent with the standard model prediction of 44±3pb calculated at next-to-leading order in QCD.

Details

Original languageEnglish
Article number041802
JournalPhysical review letters
Volume107
Issue number4
Publication statusPublished - 20 Jul 2011
Peer-reviewedYes

Keywords

ASJC Scopus subject areas