Speaker
Description
In heavy-ion collisions at few GeV per nucleon energy regime, QCD matter with densities several times larger than the normal nuclear matter density and temperatures of about 80 MeV is created. At such extreme conditions the fundamental properties of the hadrons are expected to be modified. The properties of produced QCD matter can be extracted directly from its emissivity in electromagnetic sector or from the production of the rare (multi-) strange particles.
The High Acceptance DiElecton Spectrometer (HADES), installed at heavy-ion synchrotron SIS18 at the GSI Helmholtzzentrum für Schwerionenforschung (Germany), is currently the only experiment studying properties of strongly interacting matter in a few A GeV energy regime. It studies dielectron and hadron production in heavy-ion collisions, as well as in proton- and pion-induced reactions in the energy range of 1 − 4 GeV. HADES is a fixed-target experiment with large angular acceptance and high rate capabilities.
In this contribution main emphasis will be put on most recent results on strangeness and dielectron production in Au+Au collisions at sqrt(sNN) = 2.42 GeV. The high statistics data allows for studying multi-differential distributions.
Experimental spectra will be confronted with results obtained by other experiments as well as with available model calculations. The future experimental program at SIS18 during FAIR Phase-0 will also be discussed.
| Topic: | Memorial session for H. Oeschler |
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