Strange and Non-Strange (Anti-)Baryon Production at 200 GeV per Nucleon

TL;DR

This paper investigates baryon and hyperon production in high-energy nucleus-nucleus collisions, revealing enhanced anti-hyperon production at 200 GeV per nucleon, and compares rapidity distributions of net hyperons to participant protons.

Contribution

It provides new measurements of strangeness production and hyperon distributions at high energies, highlighting differences in anti-baryon yields in heavy-ion collisions.

Findings

Enhanced $ar{ ext{Lambda}}$ production at 200 GeV per nucleon

Comparison of hyperon and proton rapidity distributions

Variation of strangeness production across collision systems

Abstract

Rapidity distributions of net hyperons ($\Lambda - \overline{\Lambda}$) are compared to distributions of participant protons ($p - \overline{p}$). Strangeness production (mean multiplicities of produced $\Lambda/\Sigma^0$ hyperons and $\langle K + \overline{K} \rangle$) in central nucleus-nucleus collisions is shown for different collision systems at different energies. An enhanced production of $\overline{\Lambda}$ compared to $\overline{p}$ is observed at 200 GeV per nucleon.