Energy Dependence of the Transverse Momentum Distributions of Charged Particles in pp Collisions Measured by ALICE - IN2P3 - Institut national de physique nucléaire et de physique des particules Access content directly
Journal Articles European Physical Journal C: Particles and Fields Year : 2013

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

B. Abelev
  • Function : Author
Laurent Aphecetche
Guillaume Batigne
B. Cheynis
B. Erazmus
  • Function : Author
  • PersonId : 1178907
  • IdRef : 033726485
Magali Estienne
Marie Germain
Maxime Guilbaud
Gines Martinez Garcia
Philippe Pillot
C. Roy
Alexandre Shabetai
Diego Stocco

Abstract

Differential cross sections of charged particles in inelastic pp collisions as a function of p_T have been measured at sqrt(s) = 0.9, 2.76 and 7 TeV at the LHC. The p_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_T = 50 GeV/c as required for the calculation of the nuclear modification factor in nucleus-nucleus and proton-nucleus collisions.

Dates and versions

in2p3-00841160 , version 1 (04-07-2013)

Identifiers

Cite

B. Abelev, Laurent Aphecetche, Y.W. Baek, A. Baldisseri, V. Barret, et al.. Energy Dependence of the Transverse Momentum Distributions of Charged Particles in pp Collisions Measured by ALICE. European Physical Journal C: Particles and Fields, 2013, 73, pp.2662. ⟨10.1140/epjc/s10052-013-2662-9⟩. ⟨in2p3-00841160⟩
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