SMuK 2023 – scientific programme
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HK: Fachverband Physik der Hadronen und Kerne
HK 65: Heavy-Ion Collisions and QCD Phases XII
HK 65.3: Talk
Thursday, March 23, 2023, 16:15–16:30, SCH/A216
Characterising the hot and dense fireball with virtual photons at HADES — •Niklas Schild für die HADES Kollaboration — Technische Universität Darmstadt, 64289 Darmstadt, Germany
Electromagnetic probes (γ, γ∗) offer a unique opportunity to study the conditions in heavy-ion collisions throughout their whole evolution. Since they can escape the strongly interacting medium, they may bring direct information from their origins to a detector.
In this contribution, we present measurements of such dileptons from Ag+Ag collisions, collected at the High-Acceptance-DiElectron-Spectrometer (HADES), at √sNN=2.55 GeV. A particular focus is set on the multidifferential analysis of the anisotropic flow in terms of centrality, rapidity, transverse momentum and invariant mass. Through the isolation of the in-medium contribution, this will allow insights into the flow at early stages of the collision, and therefore into the time evolution of the system’s collectivity as a whole.