The production of charged pions, kaons and (anti)protons has been measured at mid-rapidity (−0.5<y<0den">de">) in p–Pb collisions at den">de"> using the ALICE detector at the LHC. Exploiting particle identification capabilities at high transverse momentum (def3" title="Click to view the MathML source">pTden">de">), the previously published def3" title="Click to view the MathML source">pTden">de"> spectra have been extended to include measurements up to 20 GeV/c for seven event multiplicity classes. The def3" title="Click to view the MathML source">pTden">de"> spectra for pp collisions at den">de">, needed to interpolate a pp reference spectrum, have also been extended up to 20 GeV/c to measure the nuclear modification factor (RpPbden">de">) in non-single diffractive p–Pb collisions.
At intermediate transverse momentum (2<pT<10 GeV/cden">de">) the proton-to-pion ratio increases with multiplicity in p–Pb collisions, a similar effect is not present in the kaon-to-pion ratio. The def3" title="Click to view the MathML source">pTden">de"> dependent structure of such increase is qualitatively similar to those observed in pp and heavy-ion collisions. At high def3" title="Click to view the MathML source">pTden">de"> (>10 GeV/cden">de">), the particle ratios are consistent with those reported for pp and Pb–Pb collisions at the LHC energies.
At intermediate def3" title="Click to view the MathML source">pTden">de"> the (anti)proton RpPbden">de"> shows a Cronin-like enhancement, while pions and kaons show little or no nuclear modification. At high def3" title="Click to view the MathML source">pTden">de"> the charged pion, kaon and (anti)proton RpPbden">de"> are consistent with unity within statistical and systematic uncertainties.