Momentum distribution of produced hadrons is the basic characteristic of the collision. Spectra measured in different systems can be compared to each other. Such comparison is called the "nuclear modification factor" (RAA) and it answers a very important question: how the QGP modifies hadron spectra.
The dependence of the nuclear modification factor RAA on pT measured in the centrality intervals 0-5%, 10-20%, 30-40%, 50-60% and 60-80%. Statistical uncertainties are shown with vertical bars and systematic uncertainties with brackets.
Our group performed measurement of charged particle multiplicity of charged particles dNch/dy and RAA in different collision systems at different energies. See our results here: