Anti-Lambda/Anti-Proton ratios at the AGS

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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.
8 pages revtex, 4 postscript figures

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Nuclear Theory, High Energy Physics - Phenomenology, Nuclear Experiment

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http://salesiana.dossiersoluciones.com/handle/123456789/82921

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/nucl-th/9806006
 http://arxiv.org/abs/nucl-th/9806006

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arXiv