Charged-particle distributions in s√=13 TeV pp interactions measured with the ATLAS detector at the LHC

G. Aad, Paul Newman, ATLAS Collaboration

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Charged-particle distributions are measured in proton–proton collisions at a centre-of-mass energy of 13 TeV, using a data sample of nearly 9 million events, corresponding to an integrated luminosity of 170 μb−1, recorded by the ATLAS detector during a special Large Hadron Collider fill. The chargedparticle
multiplicity, its dependence on transverse momentum and pseudorapidity and the dependence of the mean transverse momentum on the charged-particle multiplicity are presented. The measurements are performed with charged particles with transverse momentum greater than 500 MeV and absolute
pseudorapidity less than 2.5, in events with at least one charged particle satisfying these kinematic requirements. Additional measurements in a reduced phase space with absolute pseudorapidity less than 0.8 are also presented, in order to compare with other experiments. The results are corrected for detector
effects, presented as particle-level distributions and are compared to the predictions of various Monte Carlo event generators.
Original languageEnglish
Pages (from-to)67-88
JournalPhysics Letters B
Early online date27 Apr 2016
Publication statusPublished - 10 Jul 2016

Bibliographical note

20 pages, plus author list - 37 pages total, 4 figures, 2 tables. Published in Phys. Lett. B. All figures including auxiliary figures are available at


  • hep-ex


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