Enhanced strange baryon production in Au+Au collisions compared to p+p at sqrts = 200 GeV

Abstract

We report on the observed differences in production rates of strange and multi-strange baryons in Au+Au collisions at sqrts = 200 GeV compared to pp interactions at the same energy. The strange baryon yields in Au+Au collisions, then scaled down by the number of participating nucleons, are enhanced relative to those measured in pp reactions. The enhancement observed increases with the strangeness content of the baryon, and increases for all strange baryons with collision centrality. The enhancement is qualitatively similar to that observed at lower collision energy sqrts =17.3 GeV. The previous observations are for the bulk production, while at intermediate pT, 1 < pT< 4 GeV/c, the strange baryons even exceed binary scaling from pp yields.

arXiv comment7 pages, 4 figures. Printed in PRC

References in corpus (29)

• Identified Charged Particle Spectra and Yields in Au+Au Collisions at sqrt(s_NN) = 200 GeV
• Transverse momentum and collision energy dependence of high $p_T$ hadron suppression in Au+Au collisions at ultrarelativistic energies
• Comparison of Chemical Freeze-Out Criteria in Heavy-Ion Collisions
• Particle-type dependence of azimuthal anisotropy and nuclear modification of particle production in Au+Au collisions at s(NN)**(1/2) = 200-GeV
• Chemical Equilibration in Pb+Pb Collisions at the SPS
• Energy and system size dependence of chemical freeze-out in relativistic nuclear collisions
• Identified particle distributions in pp and Au+Au collisions at sqrt{s_NN}=200 GeV
• Induced Gluon Radiation in a QCD Medium
• Measurements of Strange Particle Production in $p+p$ Collisions at $\sqrt{s}$= 200 GeV
• Transverse Momentum Spectra in Au+Au and d+Au Collisions at $\sqrt{s_{NN}}$=200 GeV and the Pseudorapidity Dependence of High p${}_T$ Suppression
• Identified baryon and meson distributions at large transverse momenta from Au+Au collisions at $\sqrt{s_{{}_{NN}}}=200$ GeV
• High-p_T Charged Hadron Suppression in Au+Au Collisions at sqrt(s_NN) = 200 GeV
• Identified hadron spectra at large transverse momentum in p+p and d+Au collisions at \sqrts_NN = 200 GeV
• Core-Corona Separation in Ultra-Relativistic Heavy Ion Collisions
• Effect of Jet Quenching on High-$p_T$ Hadron Spectra in High-energy Nuclear Collisions
• Multi-Strange Baryon Production in Au-Au collisions at sqrt(s_NN) = 130 GeV
• Charged hadron transverse momentum distributions in Au+Au collisions at sqrt(s_NN) = 200 GeV
• Pion, kaon, proton and anti-proton transverse momentum distributions from p+p and d+Au collisions at $\sqrt{s_{NN}}=200$ GeV
• Enhancement of hyperon production at central rapidity in 158 A GeV/c Pb-Pb collisions
• Measurements of transverse energy distributions in Au+Au collisions at $\sqrt{s_{NN}}=200$ GeV
• Strangeness enhancement and Energy dependence in Heavy Ion Collisions
• Baryon Junction Loops in HIJING/BBv2.0 and the Baryon/Meson Anomaly at RHIC
• Importance of reaction volume in hadronic collisions: Canonical enhancement
• Transient field fluctuations effects in d+Au and Au+Au collisions at \sqrt{s_nn} = 200 GeV
• Strong Color Field Baryonic Remnants in Nucleus-Nucleus Collisions at 200A GeV
• Strange quark production in a statistical effective model
• Centrality dependence of strangeness and (anti)hyperon production at BNL RHIC
• Particle Production in Proton-Proton and Deuteron-Gold Collisions at RHIC
• Strangeness Enhancement in p-A Collisions: Consequences for the Interpretation of Strangeness Production in A-A Collisions

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