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Diomega production in relativistic heavy ion collisions

Subrata Pal·C. M. Ko·Z. Y. Zhang
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Abstract

Using a multiphase transport model, we study the production of a new strange dibaryon (ΩΩ)_{0+} in dense hadronic matter formed in relativistic heavy ion collisions. The (multi-)strange baryons (Ξand Ω) are produced by strangeness-exchange reactions between antikaons and hyperons in the pure hadronic phase. The rescattering between the omegas at midrapidity leads to a production probability of \simeq 3x10^{-7} (ΩΩ)_{0+} per event at the RHIC energy of \sqrt s=130A GeV. The production probability would be enhanced by two orders of magnitude if (ΩΩ)_{0+} and omega reach chemical equilibrium during heavy ion collisions. We further find that the yield of (ΩΩ)_{0+} increases continuously from SPS to the highest RHIC energy.

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Subrata Pal, C. M. Ko, Z. Y. Zhang. 2001-07-26. Diomega production in relativistic heavy ion collisions. https://doi.org/10.1016/j.physletb.2005.08.031

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