Figure 45

Squared particle masses calculated from the momentum and velocity determined with ITS-TPC and HMPID, respectively, in central Pb-Pb collisions at $\sNN$ = 2.76 TeV. The velocity is calculated from the Cherenkov angle measured in the HMPID. Dotted lines indicate the PDG mass values. The pion tail on the left-hand side is suppressed by an upper cut on the Cherenkov angle. The deuteron peak is clearly visible.