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arXiv · 1808.05823

Testing the system size dependence of hydrodynamical expansion and thermal particle production with $π$, K, p, and $ϕ$ in Xe-Xe and Pb-Pb collisions with ALICE

F. Bellini
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Abstract

We present new results on transverse momentum spectra, integrated yields, and mean transverse momenta of pions, kaons, and protons, as well as of $ϕ$-mesons for various centrality classes measured in Pb-Pb and Xe-Xe collisions at the LHC. This unique set of data allows us to investigate bulk particle production for very different systems at similar multiplicities. The chemical and kinetic freeze-out parameters are extracted via statistical-thermal and combined blast-wave fits to the data in heavy-ion collisions and are compared to results obtained in pp and p-Pb collisions at similar multiplicities. The evolution of collective-like effects from pp and p-Pb collisions to Xe-Xe and Pb-Pb collisions is further investigated by detailed comparisons to predictions from models.

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F. Bellini. 2018-08-17. Testing the system size dependence of hydrodynamical expansion and thermal particle production with $π$, K, p, and $ϕ$ in Xe-Xe and Pb-Pb collisions with ALICE. https://doi.org/10.1016/j.nuclphysa.2018.09.082

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