Lambda and Antilambda polarization in Au-Au collisions at RHIC

TL;DR

This paper applies a recent model to explain the near-zero polarization of Lambda and Antilambda hyperons observed in 200 GeV Au-Au collisions at RHIC, comparing it with other models to interpret experimental data.

Contribution

It demonstrates how a new model can account for hyperon polarization data in heavy-ion collisions and discusses its relation to existing models.

Findings

Hyperons show near-zero polarization in RHIC Au-Au collisions

The model successfully explains the experimental polarization results

Comparison with other models highlights key differences in polarization mechanisms

Abstract

Recent experiments at RHIC have shown that in 200 GeV Au-Au collisions, the Lambda and Antilambda hyperons are produced with very small polarizations [1], almost consistent with zero. These results can be understood in terms of a model that we recently proposed [2]. In this work, we show how this model may be applied in such collisions, and also will discuss the relation of our results with other models, in order to explain the experimental data.