Abstract
Centrality dependence of the directed flow of protons in Au + Au collisions at the beam energy of 1.23 \(A\) GeV collected by the HADES experiment at GSI is presented. Measurements are performed with respect to the spectators plane estimated using the Forward Wall hodoscope. Biases due to non-flow correlations and correlated detector effects are evaluated. The corresponding systematic uncertainties are quantified using estimates of the spectators plane from various forward rapidity regions constructed from groups of Forward Wall channels and protons reconstructed with the HADES tracking system.
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Funding
The work is supported by the Ministry of Science and Higher Education of the Russian Federation, Project “Fundamental properties of elementary particles and cosmology” no. 0723-2020-0041, the Russian Foundation for Basic Research funding within the research project no. 18-02-40086, the European Union’s Horizon 2020 research and innovation program under grant agreement no. 871072, the National Research Nuclear University MEPhI in the framework of the Russian Academic Excellence Project (contract no. 02.a03.21.0005, 27.08.2013).
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Mamaev, M., Golosov, O. & Selyuzhenkov, I. Estimating Non-Flow Effects in Measurements of Anisotropic Flow of Protons with the HADES Experiment at GSI. Phys. Part. Nuclei 53, 277–281 (2022). https://doi.org/10.1134/S1063779622020514
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DOI: https://doi.org/10.1134/S1063779622020514