# Figure 1

 The $\dedx$ as a function of the momentum $p$ at mid-rapidity $|\eta|< 0.2$ for 0-5% (left panel) and 60-80% (right panel) Pb-Pb collisions. In each momentum bin, the $\dedx$ spectra have been normalized to have unit integrals and only bins with more than 0.1% of the counts are shown (making electrons not visible in this plot except at very low momentum). The curves show the final $\mdedx$ responses for pions, kaons, and protons.