Figure 2

d$ N $/d$ y $ for protons (A=1) up to $^4$He (A=4) and the corresponding anti-particles in central (0-10%) Pb--Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 2.76 TeV. The blue lines are fits with an exponential function. Statistical uncertainties are shown as lines, whereas the systematic uncertainties are represented by boxes.
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