Strangeness production in d+Au collisions at $\sqrt{s_{NN}}$ = 200 GeV in STAR

TL;DR

This paper reports measurements of strange hadron production in central d+Au collisions at 200 GeV, revealing strangeness enhancement and particle type dependence in nuclear modification factors, suggesting final state effects influence the Cronin effect.

Contribution

It provides new experimental data on strangeness production and nuclear modification factors in d+Au collisions at 200 GeV, highlighting particle type dependence and potential final state effects.

Findings

Significant strangeness enhancement in central d+Au collisions.

Particle type dependence of nuclear modification factors at intermediate pT.

Indications of final state effects impacting the Cronin effect.

Abstract

We report on the measurements of strange hadron ($K^0_S$, $\Lambda$, $\Xi$) production in the most central (0-20%) d+Au collisions at \sqrt{s_{NN}} = 200 GeV in STAR. Significant strangeness enhancement is observed in the most central d+Au collisions, especially for multi-strange hyperons ($\Xi$). The nuclear modification factor ($R_{dAu}$) of identified particles shows possible particle type -- baryon (protons, $\Lambda$), meson ($\pi$,$K^0_S$, $\phi$) -- dependence at intermediate $p_T$ (2 - 3.5 GeV/c), indicating that the final state may have an impact on the Cronin effect.