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Anti-Lambda/Anti-Proton ratios at the AGS

G. J. Wang·R. Bellwied·C. Pruneau·G. Welke
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Abstract

We attempt to explain the large ${\bar Λ}/\bar p$ ratios measured in heavy ion collisions at $12~{\rm A\cdot GeV}/c$ beam momentum within an hadronic framework. The ratios are large compared to corresponding ratios in $pp$ collisions, and to thermal fits. We show using a simple model and a detailed cascade calculation that different annihilation cross--sections of $\bar Λ$'s and $\bar p$'s, and the net conversion of $\bar p$'s to $\bar Λ$'s, do not account for the enhancement. Uncertainties in elementary cross--sections and formation times are also considered.

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G. J. Wang, R. Bellwied, C. Pruneau, G. Welke. 1998-06-02. Anti-Lambda/Anti-Proton ratios at the AGS. https://arxiv.org/abs/nucl-th/9806006

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