Differential cross sections of charged particles in inelastic pp collisions as a function of pT have been mea- sured at √s = 0.9, 2.76 and 7 TeV at the LHC. The pT spec- tra are compared to NLO-pQCD calculations. Though the differential cross section for an individual √s cannot be de- scribed 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.

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

BALA, RENU;BEOLE', Stefania;BERZANO, DARIO CARLO DOMENICO;BIANCHI, LIVIO;BOTTA, Elena;BRUNA, ELENA;BUFALINO, STEFANIA;CORRALES MORALES, YASSER;FERRETTI, Alessandro;GAGLIARDI, Martino;GALLIO, Mauro;INNOCENTI, GIAN MICHELE;MASERA, Massimo;MILANO, LEONARDO;OPPEDISANO, Chiara;RAMELLO, Luciano;RUSSO, RICCARDO;SITTA, Mario;VERCELLIN, Ermanno;
2013-01-01

Abstract

Differential cross sections of charged particles in inelastic pp collisions as a function of pT have been mea- sured at √s = 0.9, 2.76 and 7 TeV at the LHC. The pT spec- tra are compared to NLO-pQCD calculations. Though the differential cross section for an individual √s cannot be de- scribed 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.
2013
73
2662
2662
http://arxiv.org/abs/1307.1093
transverse momentum distribution; PP COLLISIONS
B. Abelev;J. Adam;D. Adamová;A. M. Adare;M. M. Aggarwal;G. Aglieri Rinella;M. Agnello;A. G. Agocs;A. Agostinelli;Z. Ahammed;N. Ahmad;A. Ah...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2318/143057
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