Omega and AntiOmega production in Pb+Pb and p+p collisions at 30, 40 and 158 AGeV
Michael Mitrovski
Abstract
We report preliminary results on Omega and AntiOmega production in central Pb+Pb collisions at 30, 40 and 158 AGeV and p + p interactions at 158 GeV. The midrapidity AntiOmega/Omega ratio is estimated to be 0.45 +- 0.05 and 0.41 +- 0.18 for central Pb+Pb collisions at 158 and 40 AGeV, respectively. The corresponding value for 158 GeV p+p interactions is 0.67 +- 0.62. For central Pb+Pb collisions at 158 AGeV fully corrected distributions are obtained. The inverse slope parameters of the transverse mass spectrum and total yields are T(Omega) = 276 +- 23 MeV, <Omega> = 0.47 +- 0.07 and T(AntiOmega) = 285 +- 39 MeV, <AntiOmega> = 0.15 +- 0.02.
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