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Performance of missing transverse momentum reconstruction with the ATLAS detector using proton–proton collisions at √s=13TeV

  • ATLAS Collaboration
  • National University of Science and Technology POLITEHNICA Bucharest
  • National Center for Energy, Nuclear Science and Technology
  • Dep Física and CEFITEC of Faculdade de Ciências e Tecnologia
  • NOVA University Lisbon
  • CERN
  • Mohamed I University
  • Aix-Marseille Université
  • University of Oklahoma
  • Azerbaijan National Academy of Sciences
  • IN2P3/CNRS
  • University of Toronto
  • 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
  • The University of Tokyo
  • AGH University of Krakow
  • Northern Illinois University
  • Ludwig Maximilian University of Munich
  • Rutherford Appleton Laboratory
  • University of Belgrade
  • Alexandru Ioan Cuza University of Iaşi
  • Laboratório de Instrumentação e Física Experimental de Partículas
  • University of Granada
  • Joint Institute for Nuclear Research
  • University of Rome Tor Vergata
  • Kyoto University
  • Lund University
  • University of Geneva
  • P.N. Lebedev Physical Institute of the Russian Academy of Sciences
  • University of Bologna
  • University of Victoria BC
  • Instituto de Física La Plata
  • Radboud University Nijmegen
  • Horia Hulubei National Institute of Physics and Nuclear Engineering
  • National Technical University of Athens
  • Czech Technical University in Prague

Research output: Contribution to journalArticlepeer-review

238 Scopus citations

Abstract

The performance of the missing transverse momentum (ETmiss) reconstruction with the ATLAS detector is evaluated using data collected in proton–proton collisions at the LHC at a centre-of-mass energy of 13 TeV in 2015. To reconstruct ETmiss, fully calibrated electrons, muons, photons, hadronically decaying τ-leptons , and jets reconstructed from calorimeter energy deposits and charged-particle tracks are used. These are combined with the soft hadronic activity measured by reconstructed charged-particle tracks not associated with the hard objects. Possible double counting of contributions from reconstructed charged-particle tracks from the inner detector, energy deposits in the calorimeter, and reconstructed muons from the muon spectrometer is avoided by applying a signal ambiguity resolution procedure which rejects already used signals when combining the various ETmiss contributions. The individual terms as well as the overall reconstructed ETmiss are evaluated with various performance metrics for scale (linearity), resolution, and sensitivity to the data-taking conditions. The method developed to determine the systematic uncertainties of the ETmiss scale and resolution is discussed. Results are shown based on the full 2015 data sample corresponding to an integrated luminosity of 3.2fb-1.

Original languageEnglish
Article number903
JournalEuropean Physical Journal C
Volume78
Issue number11
DOIs
StatePublished - Nov 1 2018

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