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Production of Subthreshold Pions in Heavy-Ion Collisions Using a Hydrodynamic Approach with a Nonequilibrium Equation of State

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Bulletin of the Russian Academy of Sciences: Physics Aims and scope

Abstract—

A hydrodynamic approach with a nonequilibrium equation of state is used to describe collisions between heavy ions with medium energies. The double differential cross sections for the production of subthreshold \({{\pi }^{0}}\) mesons and \({{\pi }^{ + }}\)mesons during collisions between various nuclei are calculated to develop this approach with the inclusion of nuclear viscosity effects. They are in good agreement with the available experimental data.

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Authors and Affiliations

  1. Emperor Alexander I State Transport University, 190031, St. Petersburg, Russia

    A. T. D’yachenko

  2. Konstantinov Institute of Nuclear Physics, National Research Center “Kurchatov Institute”, 188300, Gatchina, Leningrad oblast, Russia

    A. T. D’yachenko & I. A. Mitropolsky

Authors
  1. A. T. D’yachenko
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  2. I. A. Mitropolsky
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Correspondence to A. T. D’yachenko.

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Translated by I. Obrezanova

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D’yachenko, A.T., Mitropolsky, I.A. Production of Subthreshold Pions in Heavy-Ion Collisions Using a Hydrodynamic Approach with a Nonequilibrium Equation of State. Bull. Russ. Acad. Sci. Phys. 84, 391–396 (2020). https://doi.org/10.3103/S1062873820040061

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  • DOI: https://doi.org/10.3103/S1062873820040061

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