9–15 Jun 2019
Bari, Italy
Europe/Zurich timezone

Strange and non-strange light-flavour hadron production in Pb-Pb and p-Pb collisions at LHC energies with ALICE

11 Jun 2019, 15:00
20m
Sala Federico II (Villa Romanazzi Carducci)

Sala Federico II

Villa Romanazzi Carducci

Speaker

Michal Sefcik (Pavol Jozef Safarik University (SK))

Description

The ALICE experiment is dedicated to the study of strongly interacting matter at the extremely high temperatures and energy densities reached at the LHC. Its excellent tracking and particle-identification capabilities allow characterising the hot nuclear matter via detailed measurements of particle production in nucleus-nucleus collisions. In addition, the study of proton-nucleus collisions provides a fundamental benchmark for initial state and cold nuclear matter effects.

During the LHC Run2, the ALICE collaboration recorded data from Pb--Pb and p--Pb collisions at the unprecedented energies of $\sqrt{s_{\rm NN}}$ = 5.02 and 8.16 TeV, respectively. Measurements of the production of light-flavour hadrons $\pi$, K, p, $\Lambda$, $\Xi$ and $\Omega$ are reported.
Results are presented as a function of the collision centrality or multiplicity and include transverse momentum spectra, ratios of spectra, integrated yields and nuclear modification factors. Hydrodynamic model predictions are tested through comparison to the measured spectral shapes.

A systematic study of strangeness production is of fundamental importance for determining the thermal properties of the system created in ultra-relativistic heavy-ion collisions. In order to study strangeness enhancement, the measured particle yields are normalised to the yields of pions in the corresponding centrality or multiplicity classes. The results are compared to measurements
performed at lower energies, to different collision systems and to predictions from statistical hadronisation models.

Track Strangeness and Light Flavour
Collaboration name ALICE Collaboration

Primary author

Michal Sefcik (Pavol Jozef Safarik University (SK))

Presentation materials