Pseudorapidity distributions of charged hadrons in proton-lead collisions at √sNN=5.02 and 8.16 TeV

The CMS collaboration

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10 Citations (Scopus)

Abstract

The pseudorapidity distributions of charged hadrons in proton-lead collisions at nucleon-nucleon center-of-mass energies sNN=5.02 and 8.16 TeV are presented. The measurements are based on data samples collected by the CMS experiment at the LHC. The number of primary charged hadrons produced in non-single-diffractive proton-lead collisions is determined in the pseudorapidity range |ηlab| < 2.4. The charged-hadron multiplicity distributions are compared to the predictions from theoretical calculations and Monte Carlo event generators. In the center-of-mass pseudorapidity range |ηcm| < 0.5, the average charged-hadron multiplicity densities 〈dNch/dηcm|ηcm| < 0.5 are 17.31 ± 0.01 (stat) ± 0.59 (syst) and 20.10 ± 0.01 (stat) ± 0.85(syst) at sNN=5.02 and 8.16 TeV, respectively. The particle densities per participant nucleon are compared to similar measurements in proton-proton, proton-nucleus, and nucleus-nucleus collisions.[Figure not available: see fulltext.].

Original languageEnglish
Article number45
Number of pages34
JournalJournal of High Energy Physics
Volume2018
Issue number1
DOIs
Publication statusPublished - 1 Jan 2018

Keywords

  • Hadron-Hadron scattering (experiments)
  • Heavy-ion collision
  • PLUS AU COLLISIONS
  • PARTICLE MULTIPLICITY
  • ENERGY
  • HEAVY-ION COLLISIONS
  • TRANSVERSE-MOMENTUM SPECTRA
  • PB COLLISIONS
  • AU+AU COLLISIONS
  • PARTON
  • NUCLEUS COLLISIONS
  • DEPENDENCE

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