Separation power of hadron identification in the ITS (red), TPC (magenta), TOF (blue), and HMPID (green) as a function of \pt at mid-rapidity for inelastic pp and 0$-$90\% \pbpb collisions at \snnF TeV The left (right) panel shows the separation of pions and kaons (kaons and protons), expressed as the distance between the expected average PID signal divided by the resolution for the pion (kaon) (see eq. \ref{separ}), averaged over $|\eta| < $ 0.5 The lower panels show the range in which the ITS, TPC, TOF, and HMPID provide a separation power $\approx$ 2$\sigma$ or larger.