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Measurements of top-quark pair differential and double-differential cross-sections in the ℓ +jets channel with pp collisions at √s=13 TeV using the ATLAS detector

  • ATLAS Collaboration
  • National University of Science and Technology POLITEHNICA Bucharest
  • Dep Física and CEFITEC of Faculdade de Ciências e Tecnologia
  • NOVA University Lisbon
  • University of Lisbon
  • Department of Physics
  • Universidad Andrés Bello
  • CERN
  • Aix-Marseille Université
  • University of Oklahoma
  • University of Massachusetts
  • National Institute for Nuclear Physics
  • University of Pavia
  • University of Göttingen
  • Royal Holloway University of London
  • University of Toronto
  • University of Copenhagen
  • University of Sussex
  • Tel Aviv University
  • Technion-Israel Institute of Technology
  • Argonne National Laboratory
  • Abdus Salam International Centre for Theoretical Physics
  • The University of Tokyo
  • Johannes Gutenberg University Mainz
  • Université Grenoble Alpes
  • AGH University of Krakow
  • Northern Illinois University
  • Ludwig Maximilian University of Munich
  • Bogazici University
  • University of Geneva
  • Rutherford Appleton Laboratory
  • University of California at Santa Cruz
  • IN2P3/CNRS
  • Université Clermont Auvergne
  • Radboud University Nijmegen
  • Alexandru Ioan Cuza University of Iaşi
  • Laboratório de Instrumentação e Física Experimental de Partículas
  • University of Granada
  • Joint Institute for Nuclear Research
  • McGill University
  • Lawrence Berkeley National Laboratory
  • University of Rome Tor Vergata
  • Kyoto University
  • Lund University
  • P.N. Lebedev Physical Institute of the Russian Academy of Sciences
  • University of Bologna
  • University of Victoria BC

Research output: Contribution to journalArticlepeer-review

105 Scopus citations

Abstract

Single- and double-differential cross-section measurements are presented for the production of top-quark pairs, in the lepton + jets channel at particle and parton level. Two topologies, resolved and boosted, are considered and the results are presented as a function of several kinematic variables characterising the top and tt¯ system and jet multiplicities. The study was performed using data from pp collisions at centre-of-mass energy of 13 TeV collected in 2015 and 2016 by the ATLAS detector at the CERN Large Hadron Collider (LHC), corresponding to an integrated luminosity of 36fb-1. Due to the large tt¯ cross-section at the LHC, such measurements allow a detailed study of the properties of top-quark production and decay, enabling precision tests of several Monte Carlo generators and fixed-order Standard Model predictions. Overall, there is good agreement between the theoretical predictions and the data.

Original languageEnglish
Article number1028
JournalEuropean Physical Journal C
Volume79
Issue number12
DOIs
StatePublished - Dec 1 2019

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