Abstract
The results on the production of strange and multi-strange hadrons (K0S, Λ, Ξ and Ω) measured with ALICE in Pb-Pb collisions at the top LHC energy of [see formula in PDF] = 5.02 TeV are reported. Thanks to its excellent tracking and particle identification capabilities, ALICE is able to measure weakly decaying particles through the topological reconstruction of the identified hadronic decay products. Results are presented as a function of centrality and include transverse momentum spectra measured at central rapidity, pT-dependent Λ/K0S ratios and integrated yields. A systematic study of strangeness production is of fundamental importance for determining the thermal properties of the system created in ultrarelativistic heavy ion collisions. In order to study strangeness enhancement, the yields of studied particles are normalised to the corresponding measurement of pion production in the various centrality classes. The results are compared to measurements performed at lower energies, as well as to different systems and to predictions from statistical hadronization models.
Highlights
Measurement of strangeness production represents an important source of information about the strongly interacting system created in relativistic heavy-ion collisions
The ALICE detector was designed for the study of heavy-ion collisions at the LHC
Its Inner Tracking System (ITS), which consists of six layers of silicon detectors, provides precision tracking and vertexing close to the interaction point
Summary
Measurement of strangeness production represents an important source of information about the strongly interacting system created in relativistic heavy-ion collisions. LHC Run II data from Pb-Pb collisions constitute a large statistics sample at high collision energy. In these proceedings we deoscfri√besNnNew=re5su.0l2ts on the production of KS0 , Λ (Λ), Ξ TeV. We first describe the method (Ξ) and used for. Ω (Ω) in Pb-Pb collisions the identification of these at the energy particles and the main results concerning transverse momentum spectra and hadrochemistry
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