“…For (dE T /dη)/(0.5N part ), data are shown from FOPI 0-1% centrality Au+Au collisions [27], E802 0%-5% centrality Au+Au collisions [28], NA49 0-7% centrality Pb+Pb collisions [29,30], STAR 0%-5% centrality Au+Au collisions [18], and CMS 0%-5% centrality Pb+Pb collisions [30]. For (dN ch /dη)/(0.5N part ), data are shown from FOPI [27], E802 [28,31,32], NA49 [29], STAR [18,33], PHO-BOS 0-3% centrality Au+Au collisions [17], ALICE 0%-5% centrality Pb+Pb collisions [34], and ATLAS [35] Pb+Pb collisions interpolated to 0%-5% centrality. The data are plotted on a log-log scale to illustrate the power law behavior of both (dE T /dη)/(0.5N part ) and (dN ch /dη)/(0.5N part ) as a function of log( ply as E T /N ch , is a variable that is related to the average transverse mass of the produced particles [3].…”