Strangeness production in different collision systems and at different collision energies with the STAR experiment
Strangeness production has been suggested as a sensitive probe to the early dynamics of the deconfined matter created in heavy-ion collisions. In these proceedings, we report new measurements of strange hadron (Ks0, Λ, Λ̅, Ξ, Ξ̅, ϕ, Ω, Ω̅) production in Au+Au collisions at √sNN = 7.7, 9.2, 11.5, 14.6, 19.6 GeV and in O+O, Zr+Zr and Ru+Ru collisions at √sNN = 200 GeV. The presented results include transverse momentum spectra, rapidity distributions, nuclear modification factors (RCP), antibaryon-to-baryon ratio, and Ω-to-ϕ ratios. A significant Ω-to-ϕ enhancement is observed in central Au+Au collisions at √sNN≥7.7 GeV, with a similar trend in O+O and isobar (Zr+Zr, Ru+Ru) collisions at 200 GeV, where the enhancement grows from peripheral to central events. The results hint at a possible Ω-to-ϕ enhancement pattern that appears consistent at similar Npart values across different collision systems at √sNN = 200 GeV.
Authors
- Weiguang Yuan
Publication Details
- Journal
- Springer Link (Chiba Institute of Technology)
- Published
- 2026-04-17
- DOI
- https://doi.org/10.1051/epjconf/202636411007/pdf
- Primary Topic
- High-Energy Particle Collisions Research
- Type
- article
- Field-Weighted Citation Impact
- 0.00