The ALICE PID performance in Run 1 and perspectives in view of Run 2

The extended capability in particle identification (PID) is one of the most characterizing features of the ALICE experiment. Several PID techniques are exploited in ALICE to cover a wide range of momenta based on specific energy loss (ITS, TPC), transition radiation (TRD), time of flight (TOF), Cherenkov radiation (HMPID), calorimetry (PHOS, EMCAL) measurements and topological PID. In Run 1 we explored extensively the combination of these techniques to improve particle separation in a statistical Bayesian approach or in a more traditional Nσ cut approach. The results of such developments will be presented together with the perspectives for Run 2. The completion of the installation of the central barrel detectors will allow us to further improve the performances.