English

Lambda(1520) production at SPS and RHIC energies

Nuclear Experiment 2009-09-29 v1

Abstract

The recent preliminary results from central Au+Au collisions at sNN=\sqrt{s_{\rm NN}} = 130 GeV from the STAR experiment at RHIC are presented and discussed along with the results on the Λ\Lambda(1520) production in cental Pb+Pb and p+p collisions at s=\sqrt{s} = 17 GeV from the NA49 experiment at the SPS. The Λ\Lambda(1520) is measured with the invariant mass reconstruction of the decay products in the hadronic channel (K^{-}, p). The mean Λ\Lambda(1520) multiplicity scaled by the number of participants decreases from p+p to Pb+Pb collisions at the same energy of s\sqrt{s} = 17 GeV. An upper limit estimate of the multiplicity from the first measurement at sNN=\sqrt{s_{\rm NN}} = 130 GeV shows the same trend. Comparisons with model predictions provides an indication of possible medium effects on the resonance and their decay daughters.

Keywords

Cite

@article{arxiv.nucl-ex/0308028,
  title  = {Lambda(1520) production at SPS and RHIC energies},
  author = {C. Markert},
  journal= {arXiv preprint arXiv:nucl-ex/0308028},
  year   = {2009}
}

Comments

7 pages, proceedings of Strange Quarks in Matter (SQM2001), Frankfurt, Germany

R2 v1 2026-07-22T18:18:34.927Z