Strange Meson Enhancement in PbPb Collisions

Abstract

The NA44 Collaboration has measured yields and differential distributions of K+, K-, pi+, pi- in transverse kinetic energy and rapidity, around the center-of-mass rapidity in 158 A GeV/c Pb+Pb collisions at the CERN SPS. A considerable enhancement of K+ production per pi is observed, as compared to p+p collisions at this energy. To illustrate the importance of secondary hadron rescattering as an enhancement mechanism, we compare strangeness production at the SPS and AGS with predictions of the transport model RQMD.

11 pages, including 4 figures, LATEX

References in corpus (3)

• Baryon Stopping and Charged Particle Distributions in Central Pb+Pb Collisions at 158 GeV per Nucleon
• Charged Kaon and Pion Production at Midrapidity in Proton Nucleus and Sulphur Nucleus Collisions
• Strangeness in ultrarelativistic nucleus-nucleus collisions

Cited by in corpus (20)

• Systematic Measurements of Identified Particle Spectra in pp, d+Au and Au+Au Collisions from STAR
• Energy Dependence of Pion and Kaon Production in Central Pb+Pb Collisions
• Identified particle distributions in pp and Au+Au collisions at sqrt{s_NN}=200 GeV
• Pion and kaon production in central Pb+Pb collisions at 20A and 30A GeV: Evidence for the onset of deconfinement
• Maximum Relative Strangeness Content in Heavy Ion Collisions Around 30 A.GeV
• Evidence for a New State of Matter: An Assessment of the Results from the CERN Lead Beam Programme
• Kaon Production and Kaon to Pion Ratio in Au+Au Collisions at $\snn=130$ GeV
• Strange hadron production in heavy ion collisions from SPS to RHIC
• Energy Dependence of $\Lambda$ and $\bar{\Lambda }$ Production at CERN-SPS Energies
• Observing Quark-Gluon Plasma with Strange Hadrons
• Systematic Study of the Kaon to Pion Multiplicity Ratios in Heavy-Ion Collisions
• Transition from Baryon- to Meson-Dominated Freeze Out -- Early Decoupling around 30 A GeV?
• Xi production at AGS energies
• (Anti)Proton and Pion Source Sizes and Phase Space Densities in Heavy Ion Collisions
• Survey of experimental data
• Systematics of mid-rapidity K-/pi ratio in heavy-ion collisions
• Kaon Phase Space Density in Heavy Ion Collisions
• Strange Particle Production from SIS to LHC
• Performance of the Endcap Time-of-Flight detector in the STAR beam-energy scan
• Correlations in STAR: interferometry and event structure