München 2019 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 4: Heavy-Ion Collisions and QCD Phases I

HK 4.7: Vortrag

Montag, 18. März 2019, 15:45–16:00, HS 15

Understanding soft hadron production at RHIC and LHC with relativistic fluid dynamics — •Damir Devetak for the ALICE collaboration — PI, Heidelberg

The Quark-Gluon Plasma (QGP), created in ultra-relativistic heavy-ion collisions, is a system of strongly interacting partons. Experimental evidence from RHIC and LHC points towards a fluid-like behaviour of the formed QGP during its expansion. Here we concentrate on transverse momentum spectra of identified particles for central collisions as a function of collision energy in the ranges of RHIC and LHC. We investigate in detail how well experimental data are described by a fluid model based on causal relativistic fluid dynamics, including a Cooper-Frye type kinetic freeze-out and subsequent strong resonance decays. Also the dependence on model parameters such as the initial energy density, freeze-out temperature and viscosities will be discussed.