Figure 12

Ratio $(\Omega^− + \overline{\Omega}^+)/\Phi$ as a function of $\pt$ for Pb-Pb collisions at $\snn$ = 2.76 TeV (centrality 0-10\%), pp collisions at $\sqrt{s}$ = 7 TeV and Au-Au collisions at $\snn$ = 200 GeV (centrality 0-12%). The statistical uncertainties are shown as bars, systematic uncertainties (including $\pt$-uncorrelated and $\pt$-correlated components) are shown as shaded boxes, and the sum in quadrature of the statistical and systematic uncertainties (for the pp data) is shown as open boxes. Also shown are predictions of this ratio made by various models for central Pb-Pb collisions at $\snn$ = 2.76 TeV (centrality 0-20% for HIJING/B$\overline{\mathrm{B}}$, centrality 0-10% for the other models).