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Measurement of the bb¯ dijet cross section in pp collisions at √s=7 TeV with the ATLAS detector

  • ATLAS Collaboration
  • iThemba Labs
  • Department of Physics
  • University of South Africa
  • Cadi Ayyad University
  • Moroccan Foundation for Advanced Science Innovation and Research (MAScIR)
  • Dep Física and CEFITEC of Faculdade de Ciências e Tecnologia
  • NOVA University Lisbon
  • CERN
  • Mohamed I University
  • Aix-Marseille Université
  • University of Oklahoma
  • University of Iowa
  • Azerbaijan National Academy of Sciences
  • IN2P3/CNRS
  • University of Amsterdam
  • University of California at Santa Cruz
  • University of Sussex
  • Tel Aviv University
  • Technion-Israel Institute of Technology
  • University of Oregon
  • Stockholm University
  • Oskar Klein Centre
  • National Institute for Nuclear Physics
  • Abdus Salam International Centre for Theoretical Physics
  • King's College London
  • AGH University of Krakow
  • Brookhaven National Laboratory
  • Northern Illinois University
  • Ludwig Maximilian University of Munich
  • Rutherford Appleton Laboratory
  • University of Liverpool
  • University of Göttingen
  • Laboratório de Instrumentação e Física Experimental de Partículas
  • University of Granada
  • Boston University
  • Joint Institute for Nuclear Research
  • University of Rome Tor Vergata
  • Lund University
  • P.N. Lebedev Physical Institute of the Russian Academy of Sciences
  • University of Bologna
  • University of Victoria BC
  • Université Grenoble Alpes
  • Instituto de Física La Plata
  • Horia Hulubei National Institute of Physics and Nuclear Engineering
  • National Technical University of Athens
  • University of Salento
  • The University of Chicago
  • Columbia University

Research output: Contribution to journalArticlepeer-review

15 Scopus citations

Abstract

The dijet production cross section for jets containing a b-hadron (b-jets) has been measured in proton–proton collisions with a centre-of-mass energy of s=7 TeV, using the ATLAS detector at the LHC. The data used correspond to an integrated luminosity of 4.2fb-1. The cross section is measured for events with two identified b-jets with a transverse momentum pT> 20 GeV and a minimum separation in the η–ϕ plane of Δ R= 0.4. At least one of the jets in the event is required to have pT> 270 GeV. The cross section is measured differentially as a function of dijet invariant mass, dijet transverse momentum, boost of the dijet system, and the rapidity difference, azimuthal angle and angular distance between the b-jets. The results are compared to different predictions of leading order and next-to-leading order perturbative quantum chromodynamics matrix elements supplemented with models for parton-showers and hadronization.

Original languageEnglish
Article number670
JournalEuropean Physical Journal C
Volume76
Issue number12
DOIs
StatePublished - Dec 1 2016

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