PoS - Proceedings of Science
Volume 380 - Particles and Nuclei International Conference 2021 (PANIC2021) - Hadrons in medium - hyperons and mesons in nuclear matter
π0 production in Ag + Ag collisions at 1.23 A GeV beam energy measured with HADES
A. Shabanov*  on behalf of the HADES collaboration
Full text: pdf
Pre-published on: March 14, 2022
Published on: May 24, 2022
One of the major goals of the HADES experiment is the measurements of spectra of dileptons originating from dense nuclear matter.
The normalization of these spectra is given by the $\pi^0$ yield dominating the low mass region (M<0.14 GeV$/c^2$).
Another reason to study yield of $\pi^0$-mesons is a unique possibility to measure and compare all three isospin components of pion triplet in the same experiment.
In this work the preliminary results of measurements of $\pi^0$ production at $\sqrt{s_{NN}} = 2.42$ GeV energy are presented.
The results are obtained for the reaction Ag+Ag in the HADES experiment at 1.23 A GeV beam energy.
The yields of $\pi^0$ were measured via $\pi^0\rightarrow\gamma\gamma$ decay in the acceptance of the ECal detector.
The ECal covers the $\pi^0$ acceptance range $0 < p_t < 1$ GeV/c and $0.16 < y_{cm} < 1.16$.
The acceptance and efficiency corrections are applied.
Preliminary results on inclusive $\pi^0$ multiplicity per participant is compared with the available world data.
DOI: https://doi.org/10.22323/1.380.0217
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