Münster 2017 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 40: Heavy Ion Collisions and QCD Phases IX

HK 40.3: Vortrag

Donnerstag, 30. März 2017, 14:30–14:45, F 3

Low mass dielectrons from Au+Au Collisions at 1.23A GeV with HADES — •Patrick Sellheim — Goethe-Universität Frankfurt

Dielectrons are well suited to access the hot and dense stage of heavy-ion collisions and to identify hadron modifications induced by the medium. In the past years, various experiments measured dileptons and observed in the low mass region an excess over the so-called hadronic cocktail. In continuation of these studies, HADES measured e+e production in Au+Au collisions at 1.23A GeV.

In this contribution, the reconstructed e+e pair spectra will be presented. The multi-differential analysis allows to extract properties of strongly interacting matter at low collision energies. Moreover, the reconstructed pair spectra will be compared to microscopic transport model calculations, but also to the coarse-graining approaches.

This work has been supported by BMBF (05P15RFFCA), GSI, HIC for FAIR, HGS-HIRe and H-QM.

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