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HK: Fachverband Physik der Hadronen und Kerne
HK 65: Heavy-Ion Collisions and QCD Phases XII
HK 65.1: Talk
Thursday, March 23, 2023, 15:45–16:00, SCH/A216
Reconstruction of neutral mesons via photon conversion method in Ag-Ag collisions at 1.58A GeV with HADES* — •Tetiana Povar for the HADES collaboration — Bergische Universität Wuppertal,Wuppertal,Germany
The High Acceptance DiElectron Spectrometer (HADES) situated at GSI Darmstadt, Germany, aims to measure nuclear matter at high densities and medium temperatures by means of heavy ion collisions. As leptons do not interact strongly with the formed medium in all stages of such collisions, electrons and positrons can provide information about the full fireball evolution. Hence, the study of virtual photons and their decay into electron pairs (e− + e+ ) are one of the main goals in the HADES physics program.
The major background in the di-electron spectrum at low invariant masses are Dalitz-decays of light neutral mesons. Hence, precisely extracting the yields of neutral mesons produced in the collisions is necessary for proper background subtraction in all di-electron analyses.
In this talk we will present preliminary results on the transverse mass and rapidity resolved π0- and η-production yields in Ag-Ag collisions measured with HADES via the photon conversion method at 1.58A GeV incident beam energy.
* Work supported by BMBF (05P19PXFCA, 05P21PXFC1), and GSI.