Strange Baryon resonance production in VsNN=200 GeV p+p and Au+Au
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Publication date
2006
Authors
Bai, Y.
Benedosso, F.
Botje, M.A.J.
Castillo, J.
Grebenyuk, O.
Mischke, A.
Peitzmann, T.
Russcher, M.J.
Snellings, Raimond
van der Kolk, N.
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Abstract
We report the measurements of Σ(1385) and Λ(1520) production in p+p and Au+Au collisions at VsNN=200 GeV from the STAR Collaboration. The yields and the pT spectra are presented and discussed in terms of chemical and thermal freeze-out conditions and compared to model predictions. Thermal and microscopic models do not adequately describe the yields of all the resonances produced in central Au+Au collisions. Our results indicate that there may be a time span between chemical and thermal freeze-out during which elastic hadronic interactions occur.
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Bai, Y, Benedosso, F, Botje, M A J, Castillo, J, Grebenyuk, O, Mischke, A, Peitzmann, T, Russcher, M J, Snellings, R J M & van der Kolk, N 2006, 'Strange Baryon resonance production in VsNN=200 GeV p+p and Au+Au', Physical Review Letters, vol. 97, no. 13, pp. 132301/1-132301/6.