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HK: Fachverband Physik der Hadronen und Kerne
HK 55: Heavy-Ion Collisions and QCD Phases XIII
HK 55.2: Vortrag
Mittwoch, 13. März 2024, 17:45–18:00, HBR 62: EG 03
Prospects of reconstructing low-momentum and low-mass dileptons in HADES — •Iuliana-Carina Udrea for the HADES collaboration — TU Darmstadt, Darmstadt, Germany
The dileptons resulting from the decay of virtual photons are not subject to the strong force, thus their mean-free path is much longer than the size of the fireball. This allows them to leave the medium without rescattering and be the direct source of information. The transport properties of the hot and dense matter, e.g. its electrical conductivity, can be extracted via the yield of virtual photons in the low mass, low momentum limit: pee=0 MeV/c, Mee→ 0 MeV/c2.
In this contribution, we will present the analysis of low-momentum and low-mass dilepton spectra using the data collected by the HADES experiment in March 2019 of Ag+Ag collisions at √sNN=2.42 GeV. Moreover, we will present a feasibility study of dielectrons with a reduced magnetic field.
This work is supported by GSI F&E and HGS-HIRe.
Keywords: dilepon; virtual photon; HADES; low-mass low-momentum; electrical conductivity