7-12 June 2018
Auditorium Maximum
Europe/Warsaw timezone
15th International Workshop on Meson Production, Properties and Interaction
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Contribution plenary talk

Auditorium Maximum - Medium lecture hall (A,B)

Energy and system dependence of light- and heavy-flavor hadron production in pp, p-Pb, Xe-Xe and Pb-Pb collisions at the LHC

Speakers

  • Jacek OTWINOWSKI

Primary authors

Collaboration

ALICE

Abstract content

We report the measurement of light- and heavy-flavor hadron production in central ($|\eta|< 0.9$) and forward ($-4.0<\eta<-2.5$) rapidities in pp ($\sqrt{s}=2.76~{\rm TeV}$, $5.02~{\rm TeV}$ and $7~{\rm TeV}$), p-Pb ($\sqrt{s_{\rm NN}}=5.02~{\rm TeV}$), Xe-Xe ($\sqrt{s_{\mathrm NN}} = 5.44~{\rm TeV}$) and Pb-Pb ($\sqrt{s_{\mathrm NN}} = 2.76~{\rm TeV}$ and $5.02~{\rm TeV}$) collisions with ALICE at the LHC. We present the transverse momentum ($p_{\mathrm T}$) spectra and $p_{\mathrm T}$-integrated yields for different hadron species. The hadron production for different collision systems is compared as a function of collision energy, collision centrality or charged particle multiplicity. It allows us to explore the effect of multiple-parton interactions on hadron production in small systems as well as to characterize the thermodynamic and transport properties of hot and dense QCD matter produced in heavy-ion collisions. The measurement of a comprehensive set of resonances with lifetimes in a wide range of 1-46 fm/$c$ is suitable for a systematic study of the role of re-scattering and regeneration in the hadronic phase. The $p_{\rm T}$-integrated hadron yields are compared to predictions from thermal-statistical models. Hydrodynamic and recombination models are tested against the measured spectra and particle ratios (baryon/meson, resonance/non-resonance) at low and intermediate $p_{\mathrm T}$. Finally, the $p_{\rm T}$ spectra measured in p-Pb, Xe-Xe and Pb-Pb collisions are compared to those in pp collisions in terms of nuclear modification factors and are confronted with the parton energy loss models.