Does the Cronin Peak Disappear at LHC Energies

Abstract

In this work we compare the nuclear modification factors in proton (deuteron) - nucleus collisions at CERN SPS, FNAL and RHIC energies in a wide PT range. In these experiments the nuclear modification factor has shown an enhancement at p(T) approximate to 4 GeV/c. The height of this "Cronin peak" depends on the c.m. energy of the collision, as it is subject to stronger shadowing at higher energies. One of the aims of this contribution is to analyze the shadowing phenomenon at lower (2GeV/c less than or similar to p(T) less than or similar to 4 GeV/c) and intermediate (4 GeV/c less than or similar to p(T) less than or similar to 8 GeV/c) transverse momentum. Different shadowing parametrizations are considered and the obtained Cronin peaks are investigated at RHIC and LHC energies.