Cronin effect at different energies: from RHIC to LHC
1 Czech Technical University in Prague, FNSPE, Brehova 7, 11519 Prague, Czech Republic
2 Institute of Experimental Physics SAS, Watsonova 47, 04001 Kosice, Slovakia
Published online: 20 March 2014
Using the QCD improved parton model we study production of hadrons with large transverse momenta pT in proton-proton and proton-nucleus collisions at different energies corresponding to experiments at RHIC and LHC. For investigation of large-pT hadrons produced on nuclear targets we include additionally the nuclear modification of parton distribution functions and the nuclear broadening calculated within the color dipole formalism. We demonstrate that complementary effect of initial state interactions causes a significant suppression at large pT and at forward rapidities. We provide a good description of the Cronin effect at medium-high pT and the nuclear suppression at large pT in agreement with available data from experiments at RHIC and LHC. In the LHC energy range this large-pT suppression expected at forward rapidities can be verified by the future measurements.
© Owned by the authors, published by EDP Sciences, 2014