Differential cross sections of charged particles in inelastic pp collisions as a function of pT have been measured at √ s = 0.9, 2.76 and 7 TeV at the LHC. The pT 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 pT = 50 GeV/c as required for the calculation of the nuclear modification factor in nucleus–nucleus and proton– nucleus collisions.
|Autori interni:||BRUNO, Giuseppe Eugenio|
|Titolo:||Energy Dependence of the Transverse Momentum Distributions of Charged Particles in pp Collisions with ALICE|
|Rivista:||EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS|
|Data di pubblicazione:||2013|
|Digital Object Identifier (DOI):||10.1140/epjc/s10052-013-2662-9|
|Appare nelle tipologie:||1.1 Articolo in rivista|