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Gießen 2024 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 75: Invited Talks IV

HK 75.2: Invited Talk

Friday, March 15, 2024, 11:30–12:00, HBR 14: HS 1

Investigating dense nuclear matter - recent results from HADES — •Behruz Kardan for the HADES collaboration — Goethe-Universität, Frankfurt am Main

The study of strongly interacting matter under extreme conditions is one of the most important topics in the exploration of Quantum Chromodynamics (QCD).

In this talk, we highlight new measurements by HADES, the High-Acceptance Dielectron Spectrometer located at the SIS18 at GSI in Darmstadt, which is currently the only experimental setup with the unique ability to measure rare and penetrating probes at the high-µB frontier of the QCD phase diagram. The possibility of performing measurements with the same apparatus in a variety of reaction systems, such as elementary exclusive channels, in cold nuclear matter, and in its dense and excited state, provides a broad and complementary way of exploring the properties of strongly interacting matter. The main objective of the physics program is to investigate the emissivity of resonance matter, the role of baryonic resonances in these reactions, and the mechanism of strangeness and light nuclei production.

We discuss recent high statistics results on spectra, collective flow phenomena and correlations of hadrons, light nuclei, and dileptons. The data provide essential constraints for theoretical transport models utilised in the determination of the properties of dense baryonic matter, such as its emissivity and equation-of-state (EOS).

Supported by the Helmholtz Forschungsakademie HFHF and the BMBF grant 05P21RFFC3.

Keywords: Equation-of-state; Dense nuclear matter; Strangeness; Dielectron; Collective flow phenomena

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