Omega and AntiOmega production in Pb+Pb and p+p collisions at 30, 40 and 158 AGeV

Details Omega and AntiOmega production in Pb+Pb and p+p collisions at 30, 40 and 158 AGeV Omega and AntiOmega production in Pb+Pb and p+p collisions at 30, 40 and 158 AGeV

2003-05-26

arxiv.org/abs/nucl-ex/0305029v2

J.Phys. G30 (2004) S357-S362

Physics

Nuclear Physics

Nuclear Experiment

Contribution to the proceedings of "Strangeness in Quark Matter 2003" (March 2003, Atlantic Beach NC, USA), to be published in

Scientific paper

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, = 0.47 +- 0.07 and T(AntiOmega) = 285 +- 39 MeV, = 0.15 +- 0.02.

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