Resonance Production in Heavy Ion Collisions

Details Resonance Production in Heavy Ion Collisions Resonance Production in Heavy Ion Collisions

2005-01-31

arxiv.org/abs/nucl-ex/0501033v1

Acta Phys.Hung.A24:175-180,2005

Physics

Nuclear Physics

Nuclear Experiment

6 pages 4 figures, conference proceedings

Scientific paper

10.1556/APH.24.2005.1-4.24

The resonance production of $\Delta$, K(892), $\Sigma$(1385), $\Lambda$(1520) and $\phi$ from elementary p+p and Au+Au collisions at $\sqrt{s_{\rm NN}} = $ 200 GeV from the STAR experiment at RHIC is presented. Yields and spectra are discussed in terms of chemical and thermal freeze-out conditions. Thermal models do not describe sufficiently the yields of the resonance production in central Au+Au collisions. The approach which includes pseudo-elastic and elastic hadronic interactions after chemical freeze-out until thermal freeze-out suggests a time span of $\Delta \tau>$5 fm/c.

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