Lambda(1520) and Sigma(1385) resonance production in Au+Au and p+p collisions at RHIC (sqrt{s_NN}=200 GeV)

Abstract

The production of Lambda(1520) in p+p and Au+Au collisions provided by the RHIC at sqrt{s_NN}=200 GeV are investigated using the STAR detector. A preliminary Sigma(1385) signal is also shown. Models predict that a late rescattering phase in ultra-relativistic heavy ion collisions should lower the measured yields of these resonances. This reduction is presently confirmed through the Lambda(1520)/Lambda ratio which has been calculated for p+p collisions and compared with Au+Au collisions.

6 pages, 10 figures, To appear in the proceedings of the 7th International Conference on Strangeness in Quark Matter (SQM 2003), Submitted to J.Phys.G

References in corpus (1)

• Matter-induced modification of resonances at RHIC freezeout

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• Excited hadrons as a signal for quark-gluon plasma formation
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