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Measurement of D⁎±, D± and Ds ± meson production cross sections in pp collisions at √s=7 TeV with the ATLAS detector

  • Atlas Collaboration
  • Aix-Marseille Université
  • University of Oklahoma
  • Academia Sinica - Institute of Physics
  • Azerbaijan National Academy of Sciences
  • University of Amsterdam
  • Michigan State University
  • University of Toronto
  • Tel Aviv University
  • Technion-Israel Institute of Technology
  • CERN
  • Stockholm University
  • The 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 Belgrade
  • 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
  • The University of Tokyo
  • 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
  • The University of Chicago
  • Columbia University
  • University of Birmingham
  • University of Naples Federico II
  • University of Copenhagen
  • Queen Mary University of London

Research output: Contribution to journalArticlepeer-review

83 Scopus citations

Abstract

The production of D⁎±, D± and Ds ± charmed mesons has been measured with the ATLAS detector in pp collisions at s=7 TeV at the LHC, using data corresponding to an integrated luminosity of 280 nb−1. The charmed mesons have been reconstructed in the range of transverse momentum 3.5<pT(D)<100 GeV and pseudorapidity |η(D)|<2.1. The differential cross sections as a function of transverse momentum and pseudorapidity were measured for D⁎± and D± production. The next-to-leading-order QCD predictions are consistent with the data in the visible kinematic region within the large theoretical uncertainties. Using the visible D cross sections and an extrapolation to the full kinematic phase space, the strangeness-suppression factor in charm fragmentation, the fraction of charged non-strange D mesons produced in a vector state, and the total cross section of charm production at s=7 TeV were derived.

Original languageEnglish
Pages (from-to)717-763
Number of pages47
JournalNuclear Physics B
Volume907
DOIs
StatePublished - Jun 2016

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