Diomega production in relativistic heavy ion collisions

Details Diomega production in relativistic heavy ion collisions Diomega production in relativistic heavy ion collisions

2001-07-26

arxiv.org/abs/nucl-th/0107070v1

Phys.Lett. B624 (2005) 210-216

Physics

Nuclear Physics

Nuclear Theory

4 pages, RevTex, 3 figs included

Scientific paper

10.1016/j.physletb.2005.08.031

Using a multiphase transport model, we study the production of a new strange dibaryon (\Omega\Omega)_{0+} in dense hadronic matter formed in relativistic heavy ion collisions. The (multi-)strange baryons (\Xi and \Omega) 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} (\Omega\Omega)_{0+} per event at the RHIC energy of \sqrt s=130A GeV. The production probability would be enhanced by two orders of magnitude if (\Omega\Omega)_{0+} and omega reach chemical equilibrium during heavy ion collisions. We further find that the yield of (\Omega\Omega)_{0+} increases continuously from SPS to the highest RHIC energy.

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