Energy dependence of the transverse momentum distributions of charged particles in pp collisions measured by ALICE

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Abelev B., Adam J., Adamová D., Adare A., Aggarwal M., Aglieri Rinella G., ...More

European Physical Journal C, vol.73, no.12, pp.1-12, 2013 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 73 Issue: 12
  • Publication Date: 2013
  • Doi Number: 10.1140/epjc/s10052-013-2662-9
  • Journal Name: European Physical Journal C
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.1-12
  • Yıldız Technical University Affiliated: No


Differential cross sections of charged particles in inelastic pp collisions as a function of p T have been measured at √s=0.9, 2076 and 7 TeV at the LHC. The p T spectra are compared to NLO-pQCD calculations. Though the differential cross section for an individual √s cannot be described by NLO-pQCD, the relative increase of cross section with √s is in agreement with NLO-pQCD. Based on these measurements and observations, procedures are discussed to construct pp reference spectra at √s = 2.76 and 5.02 TeV up to p T=50 GeV/c as required for the calculation of the nuclear modification factor in nucleus-nucleus and proton-nucleus collisions. © 2013 CERN for the benefit of the ALICE collaboration.