Resonance Production in Heavy Ion Collisions

Abstract

The resonance production of $\Delta$, K(892), $\Sigma$(1385), $\Lambda$(1520) and $\varphi$ from elementary p+p and Au+Au collisions at $\sqrt{s_{\mathrm{NN}}}=$ 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.

6 pages 4 figures, conference proceedings

References in corpus (1)

• Freeze-out dynamics at RHIC