Heidelberg 2015 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 54: Heavy Ion Collisions and QCD Phases 7

HK 54.7: Vortrag

Donnerstag, 26. März 2015, 16:15–16:30, T/SR14

Event characterization and high order flow components of Au-Au collisions at 1.23 AGeV with HADES — •Behruz Kardan, Christoph Blume, and Maja Subotic for the HADES collaboration — Goethe-Universiät, Frankfurt am Main

HADES provides a large acceptance combined with a high mass resolution and therefor allows to study dielectron and hadron production in heavy-ion collisions with unprecedented precision. With the high statistics of seven billion Au-Au collisions at 1.23 AGeV recorded in April/May 2012 also the investigation of higher order flow harmonics is possible.

Collective flow is a sensitive probe for the properties of extreme QCD matter. However, its interpretation relies on the understanding of the initial conditions e.g. the eccentricity of the fireball created in the nuclear overlap region.

Based on Glauber Monte Carlo calculations the initial conditions of nuclear collisions, with special emphasis on the correlations between participating nucleons, were examined. Observables of event-by-event flow fluctuations with respect to the reaction centrality are deduced from geometrical properties of the initial state and compared to the measured data.

Supported by Helmholtz Alliance EMMI, GSI and HIC for FAIR.