Bonn 2020 – scientific programme
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HK: Fachverband Physik der Hadronen und Kerne
HK 25: Heavy-Ion Collisions and QCD Phases VI
HK 25.5: Talk
Wednesday, April 1, 2020, 15:00–15:15, J-HS G
Nuclear modification of charged-particle production with the ALICE experiment — •Youssef El Mard Bouziani for the ALICE collaboration — Institut für Kernphysik, Goethe-Universität Frankfurt
The ALICE experiment at the LHC is designed to study the properties of the hot and dense deconfined QCD medium, the Quark-Gluon Plasma, believed to be created in high-energy heavy-ion collisions. The interaction between quarks or gluons and the medium can be investigated by comparing the charged-particle production in Pb-Pb collisions and a corresponding reference measurement in pp collisions. This comparison is expressed by means of the nuclear modification factor RAA, the ratio of the yield in AA collisions and the yield in pp collisions scaled by the number of binary collisions.
In this talk, we present the nuclear modification factor of charged particles based on Pb-Pb collisions at √sNN = 5.02 TeV recorded in 2015 and 2018 with special focus on high pT. This analysis of RAA furthermore draws upon the improved precision of the charged-particle production in pp collisions at √s = 5.02 TeV measured in 2017.
Supported by BMBF and the Helmholtz Association.