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Abstract <p>The global polarization of hyperons and anisotropic collective flow are important observables carrying the information about earlier evolution processes in the strongly interacting matter formed in collisions of relativistic heavy ions. The former yields information about vorticity in non-central collisions, and the latter contains the information about the earlier evolution of the overlap region and the equation of state. The study of both effects at NICA collider energies is an important goal of the MPD experiment. In this paper, the global polarization and collective flow of <InlineEquation ID="IEq1"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="11496_2025_9092_Article_IEq1.gif" Format="GIF" Height="14" Rendition="HTML" Resolution="72" Type="Linedraw" Width="13" /> </InlineMediaObject> <EquationSource Format="TEX">\(\Lambda \)</EquationSource> <!--PhysPart2470249Troshin-m1--> </InlineEquation> hyperons are studied by fitting the invariant mass in Bi + Bi nuclear collisions simulated by the PHSD event generator at an energy <InlineEquation ID="IEq2"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="11496_2025_9092_Article_IEq2.gif" Format="GIF" Height="19" Rendition="HTML" Resolution="72" Type="Linedraw" Width="50" /> </InlineMediaObject> <EquationSource Format="TEX">\(\sqrt {{{s}_{{NN}}}} \)</EquationSource> <!--PhysPart2470249Troshin-m2--> </InlineEquation> = 9.2 GeV.</p>

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Global Polarization and Collective Flow of Λ Hyperons in the MPD Experiment

  • 期刊论文

  • 发表日期：

    2025年6月27日

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  • V. V. Troshin

摘要

Abstract

The global polarization of hyperons and anisotropic collective flow are important observables carrying the information about earlier evolution processes in the strongly interacting matter formed in collisions of relativistic heavy ions. The former yields information about vorticity in non-central collisions, and the latter contains the information about the earlier evolution of the overlap region and the equation of state. The study of both effects at NICA collider energies is an important goal of the MPD experiment. In this paper, the global polarization and collective flow of \(\Lambda \) hyperons are studied by fitting the invariant mass in Bi + Bi nuclear collisions simulated by the PHSD event generator at an energy \(\sqrt {{{s}_{{NN}}}} \) = 9.2 GeV.