Energy Dependence of the Transverse Momentum Distributions of Charged Particles in pp Collisions Measured by ALICE

Abstract

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

19 pages, 5 captioned figures, 1 table, authors from page 14, published version, figures at http://aliceinfo.cern.ch/ArtSubmission/node/455

References in corpus (2)

• PYTHIA 6.4 Physics and Manual
• Two remarks about UA5 published data on general characteristics of $p\bar{p}$ collisions at $\sqrt{s}$ = 900 GeV

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