Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
HK: Fachverband Physik der Hadronen und Kerne
HK 50: Heavy-Ion Collisions and QCD Phases VIII
HK 50.4: Vortrag
Donnerstag, 13. März 2025, 16:30–16:45, HS 3 Chemie
Investigating dense nuclear matter - resent collective flow 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.
We discuss recent high statistics results on collective flow phenomena in Au+Au and Ag+Ag collisions. Moreover, flow coefficients vn up to the 6th order are investigated for the first time in this energy regime. Their combined information allows to construct for the first time a full 3D picture of the angular particle emission in momentum space. The multi-differential results for protons and light nuclei will be shown in different centrality classes over a large region of phase space. Furthermore, flow fluctuations, stemming from variations of the emission pattern, are investigated by an event-by-event correlation of flow coefficients.
The data provide essential constraints for theoretical transport models utilised in the determination of the properties of dense baryonic matter, such as its viscosity and equation-of-state (EOS).
Supported by the Helmholtz Forschungsakademie HFHF and the BMBF grant 05P24RF2.
Keywords: Equation-of-state; Dense nuclear matter; Collective flow phenomena