Bonn 2020 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 24: Heavy-Ion Collisions and QCD Phases V

HK 24.7: Vortrag

Mittwoch, 1. April 2020, 15:45–16:00, J-HS F

Confronting the fluid description of extreme QCD matter with experimental data from RHIC and the LHC — •Damir Devetak1, Andrea Dubla2, Stefan Floerchinger3, Eduardo Grossi3, Silvia Masciocchi1,2, Aleksas Mazeliauskas4, and Ilya Selyuzhenkov21Physikalisches Institut, Universität Heidelberg — 2GSI Helmholtzzentrum für Schwerionenforschung — 3Institut für Theoretische Physik, Universität Heidelberg — 4Theoretical Physics Department, CERN

In heavy-ion collisions at relativistic energies, QCD matter reaches extreme conditions in terms of temperature and energy density. Its space-time evolution is successfully described within a framework of relativistic fluid dynamics. A new efficient and flexible computational framework to solve the fluid equations will be discussed. In this contribution, detailed comparison to experimental data on identified charged particle production in nucleus-nucleus collisions at RHIC and the LHC energies, differentially in event centrality and the particle momentum will be presented. The speed and flexibility of our calculations, together with the high precision of recent experimental measurements, allow to extract fundamental properties of hot and dense deconfined QCD matter such as its transport coefficients and freeze-out temperature. We also investigate tensions between experimental data and the fluid description, which forms a platform for testing new hypotheses.

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