Hoffmann, Gerald W.563139892008-08-282008-08-282002http://hdl.handle.net/2152/721textPresented here are the results of analysis of data for Au+Au at 130 GeV per nucleon pair. The data were taken by the STAR detector at RHIC. Production properties of Ξ− and its anti-particle are investigated through the measurement of ratios and yields, which are compared to previous SPS results as well as various model predictions. An anti-particle to particle ratio of 0.85±0.03(stat.)±0.05(sys.) is found for the 10% most central events. An exponential fit to the transverse mass spectra results in mid-rapidity yields and inverse slope parameters of dN/dy = 1.98±0.08(stat.) and T = 358±7(stat.) for the particle, and dN/dy = 1.73±0.07(stat.) and T = 357±7(stat.) for the anti-particle. Systematic errors for the fit results are estimated to be ∼ 20%. The ratio, yields, and inverse slope parameters are observed to be greater than SPS measurements from P b + P b collisions at 17.3 GeV per nucleon pair, indicating smaller net baryon content at mid-rapidity and hotter initial temperatures from the collisions at RHIC.electronicengCopyright is held by the author. Presentation of this material on the Libraries' web site by University Libraries, The University of Texas at Austin was made possible under a limited license grant from the author who has retained all copyrights in the works.Colliders (Nuclear physics)Heavy ion collisionsThesis3110641