Measurement of the k t splitting scales in Z → ℓℓ events in pp collisions at √s=8 TeV with the ATLAS detector

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  • ATLAS Collaboration

Colleges, School and Institutes

External organisations

  • Université Mohamed Premier and LPTPM
  • IN2P3
  • University of Oklahoma
  • University of Texas at Arlington
  • Azerbaijan National Academy of Sciences
  • University of Toronto
  • Santa Cruz Institute for Particle Physics
  • University of Sussex
  • Tel Aviv University
  • Technion - Israel Institute of Technology
  • University of Oregon
  • Stockholm University
  • The Oskar Klein Centre
  • Department of Physics and Astronomy and INFN
  • Abdus Salam International Centre for Theoretical Physics
  • King's College London
  • Tokyo Metropolitan University
  • Electronics and Telecommunications
  • Northern Illinois University
  • University of Munich
  • Rutherford Appleton Laboratory
  • University of Belgrade


A measurement of the splitting scales occuring in the kt jet-clustering algorithm is presented for final states containing a Z boson. The measurement is done using 20.2 fb−1 of proton-proton collision data collected at a centre-of-mass energy of s=8 TeV by the ATLAS experiment at the LHC in 2012. The measurement is based on chargedparticle track information, which is measured with excellent precision in the pT region relevant for the transition between the perturbative and the non-perturbative regimes. The data distributions are corrected for detector effects, and are found to deviate from state-of-the-art predictions in various regions of the observables.[Figure not available: see fulltext.].

Bibliographic note

42 pages in total, author list starting page 26, 8 figures, 1 table, submitted to JHEP, All figures including auxiliary figures are available at


Original languageEnglish
Article number26
Number of pages41
JournalJournal of High Energy Physics
Issue number8
Early online date8 Aug 2017
Publication statusPublished - 8 Aug 2017


  • Hadron-Hadron scattering (experiments)

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