Speaker
Description
HADES is a large acceptance di-electron spectrometer operating at SIS18, GSI, Germany to study hadron-proton, hadron-nucleus and nucleus-nucleus collisions at 1-2 AGeV beam energies. The new electromagnetic calorimeter (ECAL) was used for the first time at the HADES setup in 2019 for the study of Ag+Ag reaction at 1.23 AGeV and 1.58 AGeV beam energies.
The talk is devoted to methods of the π0 mass spectra reconstruction from these data. The analysis includes several steps: 1) calibration of each module of the ECal detector, 2) identification of γ-quants, 3) reconstruction of γ-γ invariant mass spectra, 4) subtraction of combinatorial background and 5) efficiency correction. The obtained results show experimental capabilities of the new detector and allow to normalize yields of other particles.
