Selected Experimental Results from Heavy-Ion Collisions at LHC

Figure 17

(Color online) Centrality dependence of (𝑑𝑁_ch/𝑑𝜂)/(⟨𝑁_part⟩/2) for Pb+Pb collisions at √𝑠_NN=2.76 TeV [14] and Au+Au collisions at √𝑠_NN=200 GeV. The RHIC results are scaled up by a factor of 2.15. Also shown are comparisons to theoretical model calculations [144] and some parametrization based on detail shape of 𝑑𝑁_ch/𝑑𝜂 distributions at RHIC [47] and ⟨𝑁_part⟩.