Geometrical scaling for energies available at the BNL Relativistic Heavy Ion Collider to those at the CERN Large Hadron Collider
M. Petrovici (Faculty of Physics, University of Bucharest, Romania, National Institute for Physics and Nuclear Engineering - IFIN-HH, Hadron Physics Department, Bucharest, Romania); A. Lindner (Faculty of Physics, University of Bucharest, Romania, National Institute for Physics and Nuclear Engineering - IFIN-HH, Hadron Physics Department, Bucharest, Romania); A. Pop (National Institute for Physics and Nuclear Engineering - IFIN-HH, Hadron Physics Department, Bucharest, Romania); M. Târzilă (Faculty of Physics, University of Bucharest, Romania, National Institute for Physics and Nuclear Engineering - IFIN-HH, Hadron Physics Department, Bucharest, Romania); I. Berceanu (National Institute for Physics and Nuclear Engineering - IFIN-HH, Hadron Physics Department, Bucharest, Romania)
Based on recent experimental results at the BNL Relativistic Heavy Ion Collider (RHIC) and the CERN Large Hadron Collider (LHC), the dependence of identified light flavor charged hadrons on , the relevant scale in the gluon saturation picture, is studied from GeV up to 5.02 TeV. This study is extended to the slopes of the dependence on the particle mass and the parameter from Boltzmann-Gibbs blast wave (BGBW) fits of the spectra. A systematic decrease of the slope of the dependence on from Beam Energy Scan (BES) to LHC energies is evidenced. While, for the RHIC energies, within the experimental errors, does not depend on centrality, at the LHC energies a deviation from a linear behavior is observed towards the most central collisions. The influence of the corona contribution on the observed trends is discussed. The slopes of the particle mass dependence and the parameter from BGBW fits scale well with . Similar systematic trends for at TeV are in a good agreement with the ones corresponding to Pb-Pb collisions at and 5.02 TeV, pointing to a system-size-independent behavior.
