Energy Dependence of the Transverse Momentum Distributions of Charged Particles in pp Collisions Measured by ALICEстатья
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Дата последнего поиска статьи во внешних источниках: 2 апреля 2015 г.
Аннотация: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.