Abstract
The future MPD experiment at the NICA collider is aimed to study hot and dense matter created in heavy-ion collisions at center-of-mass energies of 4 to 11 GeV. Measurements of photon spectra via reconstruction of electron–positron pairs from photon conversions provide a unique opportunity to probe the temperature of the produced medium and study π0- and \(\eta \)-meson yields down to low transverse momenta. In this work, feasibility of photon conversion measurements in the MPD experiment is discussed. A proposal to increase the photon conversion probability using a dedicated retractable converter is presented, and prospects for probing the material budget of the experiment using converted photons are evaluated.
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Funding
The work was suported by the Russian Foundation for Basic Research, project no. 18-02-40045 and supported in part by the NRNU MEPhI within Project 5-100 (Contract no. 02.a03.21.0005, 27.08.2013). The reported results were obtained using the resources of the Data Processing Center of the Reactor Complex PIK of the NRC Kurchatov Institute–PNPI.
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Translated by M. Potapov
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Kryshen, E., Burmasov, N., Ivanishchev, D. et al. Prospects for Photon Conversion Measurements in the Future MPD Experiment at NICA. Phys. Part. Nuclei 54, 613–618 (2023). https://doi.org/10.1134/S1063779623040226
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DOI: https://doi.org/10.1134/S1063779623040226