TY  - THES
AU  - Otto, Jan-Hendrik
TI  - Dielectron reconstruction in Ag+Ag collisions at √{s<sub>NN</sub>} = 2.55 GeV with HADES
PB  - Justus Liebig University Giessen 
VL  - Dissertation
M1  - GSI-2023-00286
SP  - 224 p.
PY  - 2022
N1  - Dissertation, Justus Liebig University Giessen , 2022
AB  - The study of strongly interacting matter under extreme conditions in terms of temperature and pressure has moved more and more in the focus of high energy physics over the last decades. These conditions can be created in the collision of heavy-ions at various facilities around the world, together covering a broad range of collision energies starting in the GeV region and ranging up to energies of several TeV. In order to study the medium created in such collisions and get an insight in the underlying processes, dileptons are ideal messengers as they do not interact strongly and can therefore leave the medium unharmed carrying their initial properties to the particle detectors. They thus reveal the thermal conditions and the lifetime of the medium but also give insights into meson properties at high densities. One of the experiments dedicated to the investigation of strongly interacting matter is the High Acceptance DiElectron Spectrometer (HADES). It is a versatile detector with particular focus on dielectron measurements in pion, proton, deuteron and (heavy-) ion-induced reactions using proton or nucleus targets in the SIS-18 energy range (1-2 GeV/nucleon). Its excellent particle identification capabilities also allow for the investigation of hadronic observables. The analysis of a high statistics sample of Ag+Ag collisions (4.5 billion events for 0 - 40 
KW  - ddc:530 (Other)
LB  - PUB:(DE-HGF)11
DO  - DOI:10.22029/JLUPUB-7207
UR  - https://repository.gsi.de/record/276667
ER  -