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Performance study of the hyperon global polarization measurements with MPD at NICA

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Abstract

One of the goals of the future Multi-Purpose Detector (MPD) is to investigate vortical structure of matter by studying polarization observables in heavy-ion collisions in the energy range of several GeV per nucleon. We present here the performance study of global polarization of \(\varLambda \) hyperons within the framework of the MPD experiment at Nuclotron-based Ion Collider fAcility (NICA) to analyze the sensitivity of the detector to these observables during the initial stage of the experimental setup. The study has been performed via Monte Carlo simulation made for the collisions of Bi+Bi at \(\sqrt{s_{\textrm{NN}}} = 9.02\) GeV using Parton-Hadron-String Dynamics (PHSD) model. Full chain of spin direction transfer from the model to MC simulation has been implemented.

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Data Availability Statement

Data will be made available on reasonable request. [Author’s comment: The datasets generated during and/or analysed during the current study are available from the corresponding author on reasonable request.]

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Acknowledgements

The work of P. Parfenov and A. Taranenko was supported by the Ministry of Science and Higher Education of the Russian Federation, Project “New Phenomena in Particle Physics and the Early Universe” No FSWU-2023-0073. We thank Evgeni Kolomeitsev for useful discussions.

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Authors and Affiliations

  1. Joint Institute for Nuclear Research, 141980, Dubna, Russia

    Elizaveta Nazarova, Vadim Kolesnikov, Petr Parfenov, Oleg Teryaev, Valerii Troshin, Vadym Voronyuk & Alexander Zinchenko

  2. National Research Nuclear University MEPhI, 115409, Moscow, Russia

    Petr Parfenov, Arkadiy Taranenko & Valerii Troshin

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  1. Elizaveta Nazarova
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Correspondence to Elizaveta Nazarova.

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Code Availability Statement

This manuscript has associated code/software in a data repository. [Author’s comment: The code/software generated during and/or analysed during the current study is available in the MPDROOT framework repository: https://git.jinr.ru/nica/mpdroot/-/tree/dev/physics/globalPolarization.]

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Communicated by Carlos Munoz Camacho.

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Nazarova, E., Kolesnikov, V., Parfenov, P. et al. Performance study of the hyperon global polarization measurements with MPD at NICA. Eur. Phys. J. A 60, 85 (2024). https://doi.org/10.1140/epja/s10050-024-01308-4

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