Multiplicity Dependence of Pion, Kaon, Proton and Lambda Production in p–Pb Collisions at √sNN = 5.02 TeV

Abelev, B. and Adam, J. and Adamova, D. and Adare, A. M. and Aggarwal, M. M. and Rinella, G. A. and Agnello, M. and Agócs, András and Agostinelli, A. and Ahammed, Y. Z. and Ahmad, N. and Masoodi, A. A. and Ahmed, I. and Ahn, S. U. and Ahn, S. A. and Aimo, I. and Aiola, S. and Ajaz, M. and Akindinov, A. and Aleksandrov, D. and Alessandro, B. and Alexandre, D. and Alici, A. and Alkin, A. and Alme, J. and Alt, T. and Altini, V. and Altinpinar, S. and Altsybeev, I. and Prado, C. A. G. and Barnaföldi, Gergely Gábor and Bencédi, Gyula and Berényi, Dániel and Boldizsár, László and Dénes, Ervin and Hamar, Gergő and Kiss, Gábor and Lévai, Péter and Molnár, Levente and Oláh, László and Pochybova, Sona (2014) Multiplicity Dependence of Pion, Kaon, Proton and Lambda Production in p–Pb Collisions at √sNN = 5.02 TeV. PHYSICS LETTERS B, 728. pp. 25-38. ISSN 0370-2693

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Abstract

In this Letter, comprehensive results on π±, K±, K0 S, 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 similar to what has been observed in pp and Pb–Pb collisions at the LHC. The measured pT distributions are compared to d–Au, Au–Au and Pb–Pb results at lower energy and with predictions based on QCD-inspired and hydrodynamic models.

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