Multiplicity Dependence of Pion, Kaon, Proton and Lambda Production in p-Pb Collisions at $\sqrt{s_{\rm NN}}$ = 5.02 TeV

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5.02 TeV
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In this Letter comprehensive results on π±, K±, K0S, p(p) and Λ(Λ ̄) production at mid-rapidity (0 < yCMS < 0.5) in p-Pb collisions at √sNN = 5.02 TeV, measured by the ALICE detector at the LHC, are reported.  The transverse momentum distributions exhibit a hardening as a function of event multiplicity, which is stronger for heavier particles. This behavior is reminiscent of the features observed in Pb--Pb collisions as a function of collision centrality.  The measured pT distributions are compared to results at lower energy and with predictions based on QCD-inspired and hydrodynamic models.