Selected Experimental Results from Heavy-Ion Collisions at LHC
Figure 20
(Color online) Measurements of the nuclear modification factor in central heavy-ion collisions at two different center-of-mass energies, as a function of , for pions () [174, 175] and charged hadrons [26, 27], compared to several theoretical predictions (see text). The error bars on the points are the statistical uncertainties, and the boxes around the data points are the systematic uncertainties. Additional absolute normalization uncertainties of order 5% to 10% are not plotted. The bands for several of the theoretical calculations represent their uncertainties.
