Measurement of the lambda and lambda^bar particles in Au+Au Collisions at sqrt(s_NN)=130 GeV

Abstract

We present results on the measurement of lambda and lambda^bar production in Au+Au collisions at sqrt(s_NN)=130 GeV with the PHENIX detector at RHIC. The transverse momentum spectra were measured for minimum bias and for the 5% most central events. The lambda^bar/lambda ratios are constant as a function of p_T and the number of participants. The measured net lambda density is significantly larger than predicted by models based on hadronic strings (e.g. HIJING) but in approximate agreement with models which include the gluon junction mechanism.

arXiv comment6 pages, RevTeX 3, 4 figures, 2 tables, 310 authors, submitted to Phys. Rev. Lett. on 17 April 2002. Plain text data tables for the points plotted in figures for this and previous PHENIX publications are (will be made) publicly available at http://www.phenix.bnl.gov/phenix/WWW/run/phenix/papers.html

References in corpus (11)

• Suppression of Hadrons with Large Transverse Momentum in Central Au+Au Collisions at $sqrt {s sub {sub {NN}}}_ = 130 GeV
• Hadron production in Au-Au collisions at RHIC
• Baryon Stopping and Charged Particle Distributions in Central Pb+Pb Collisions at 158 GeV per Nucleon
• Centrality dependence of pi^[+/-], K^[+/-], p and p-bar production from sqrt(s_NN)=130 GeV Au + Au collisions at RHIC
• Centrality Dependence of Charged Particle Multiplicity in Au-Au Collisions at sqrt(s_NN)=130 GeV
• Can Gluons Trace Baryon Number?
• Baryon Number Transport via Gluonic Junctions
• The PHENIX Experiment at RHIC
• Charged Particle Production in Proton-, Deuteron-, Oxygen- and Sulphur-Nucleus Collisions at 200 GeV per Nucleon
• Proton and Antiproton Distributions at Mid-Rapidity in Proton-Nucleus and Sulphur-Nucleus Collisions
• Recent results from E877 for Au+Au collisions at AGS energy

Cited by in corpus (99)

• Formation of dense partonic matter in relativistic nucleus-nucleus collisions at RHIC: Experimental evaluation by the PHENIX collaboration
• A Multi-Phase Transport Model for Relativistic Heavy Ion Collisions
• Hadron production in central nucleus-nucleus collisions at chemical freeze-out
• Identified Charged Particle Spectra and Yields in Au+Au Collisions at sqrt(s_NN) = 200 GeV
• Hadronization in heavy ion collisions: Recombination and fragmentation of partons
• Elliptic Flow of Identified Hadrons in Au+Au Collisions at sqrt(s_NN) = 200 GeV
• Hadron production in heavy ion collisions: Fragmentation and recombination from a dense parton phase
• Hydrodynamic Models for Heavy Ion Collisions
• High-p_T Charged Hadron Suppression in Au+Au Collisions at sqrt(s_NN) = 200 GeV
• Multiple Interactions and the Structure of Beam Remnants
• Nuclear Stopping in Au+Au Collisions at sqrt(sNN) = 200 GeV
• Scaling properties of proton and anti-proton production in sqrt(s_NN) = 200 GeV Au + Au collisions
• K(892)* Resonance Production in Au+Au and p+p Collisions at sqrt(sNN) = 200 GeV at RHIC
• Multi-Strange Baryon Production in Au-Au collisions at sqrt(s_NN) = 130 GeV
• Single Identified Hadron Spectra from sqrt(s_NN)=130 GeV Au+Au Collisions
• Spectra and ratios of identified particles in Au+Au and d+Au collisions at sqrt(s_NN)=200 GeV
• Energy dependence of Lambda and Xi production in central Pb+Pb collisions at 20A, 30A, 40A, 80A, and 158A GeV measured at the CERN Super Proton Synchrotron
• Strange hadron production in Au+Au collisions at $\sqrt{s_{{}_{\mathrm{NN}}}}$ = 7.7, 11.5, 19.6, 27, and 39 GeV
• Centrality Dependence of Thermal Parameters Deduced from Hadron Multiplicities in Au + Au Collisions at sqrt{s_{NN}} = 130 GeV
• Rapidity Dependence of Charged Antiparticle-to-Particle Ratios in Au+Au Collisions at $\sqrt{s_{NN}}=200$ GeV
• Chemical freeze-out in ultra-relativistic heavy ion collisions at sqrt(s)_NN = 130 and 200 GeV
• Hadron Production and Phase Changes in Relativistic Heavy Ion Collisions
• Invariant-Mass Spectroscopy for Condensed Single- and Double-\kbar Nuclear Clusters to be Formed as Residues in Relativistic Heavy-Ion Collisions
• RHIC-tested predictions for low-$p_T$ and high-$p_T$ hadron spectra in nearly central Pb+Pb collisions at the LHC
• Centrality Dependent Particle Production at $y=0$ and $y\sim 1$ in Au+Au Collisions at sqrt(sNN)=200GeV
• Transverse Activity of Kaons and the Deconfinement Phase Transition in Nucleus--Nucleus Collisions
• Deuteron and antideuteron production in Au+Au collisions at sqrt(s_NN)=200 GeV
• Baryon Number Violation and String Topologies
• Strange freezeout
• Heavy quark energy loss and D-Mesons at RHIC and LHC energies
• Production of Light Nuclei in Heavy Ion Collisions Within Multiple Freezeout Scenario
• Soft gluon emission off a heavy quark revisited
• Net baryon density in Au+Au collisions at the Relativistic Heavy Ion Collider
• Pentaquark baryon production at the Relativistic Heavy Ion Collider
• Baryon Junction Loops in HIJING/BBv2.0 and the Baryon/Meson Anomaly at RHIC
• Strange anti-particle to particle ratios at mid-rapidity in sqrt(s_NN)= 130 GeV Au+Au Collisions
• Cross sections for pentaquark baryon production from protons in reactions induced by hadrons and photons
• Strange hadron production in heavy ion collisions from SPS to RHIC
• Diffusion and local deconfinement in relativistic systems
• Deuteron production in AuAu collisions at $\sqrt{s_{NN}}=7-200$ GeV via pion catalysis
• Production rates for hadrons, pentaquarks ${\Theta }^{+}$ and ${\Theta }^{\ast ++}$, and di-baryon $(\Omega \Omega {)}_{0^{+}}$ in relativistic heavy ion collisions by a quark combination model
• Sub-threshold production of K^{0}_{s} mesons and Λ hyperons in Au(1.23A GeV)+Au
• The non-Abelian feature of parton energy loss in energy dependence of jet quenching in high-energy heavy-ion collisions
• Identified hadron transverse momentum spectra in Au+Au collisions at sqrt(s_(NN))=62.4 GeV
• Hadron production by quark combination in central Pb+Pb collisions at $\sqrt{s_{NN}}=17.3$ GeV
• Charge Particle Multiplicity and Transverse Energy Measurements in Au-Au collisions in PHENIX at RHIC
• Anomalous net-baryon-rapidity spectra at RHIC
• Effects of Strong Color Fields on Baryon Dynamics
• Vector meson spectral function and dilepton production rate in a hot and dense medium within an effective QCD approach
• Hadronization in heavy ion collisions: recombination or fragmentation?
• Freezeout systematics due to the hadron spectrum
• Hadron Yield Correlation in Combination Models in High Energy AA Collisions
• Dependence of hadron spectra on decoupling temperature and resonance contributions
• Transient field fluctuations effects in d+Au and Au+Au collisions at \sqrt{s_nn} = 200 GeV
• Rate Equation Network for Baryon Production in High Energy Nuclear Collisions
• Transverse Dynamics at RHIC
• Rapidity dependence of deuteron production in Au+Au collisions at $\sqrt{s_{NN}}$ = 200 GeV
• Systematics of chemical freeze-out parameters in heavy-ion collision experiments
• Measurement of K0S, Lambda, Antilambda production at HERA
• Production of Protons and Light Nuclei in Au+Au Collisions at $\sqrt{s_{\mathrm{NN}}}$ = 3 GeV with the STAR Detector
• Low Mass Dilepton Rate from the Deconfined Phase
• Strong Color Field Baryonic Remnants in Nucleus-Nucleus Collisions at 200A GeV
• Generalisation of Gunion-Bertsch Formula for Soft Gluon Emission
• Centrality dependence of charged antiparticle to particle ratios near mid-rapidity in d+Au collisions at sqrt(s_NN)=200 GeV
• Properties of the QGP created in heavy-ion collisions
• Nuclear Modification Factor for Charged Pions and Protons at Forward Rapidity in Central Au+Au Collisions at 200 GeV
• Hadron Spectra and QGP Hadronization in Au+Au Collisions at RHIC
• Strange Baryon Production From Nucleus-Nucleus Collisions at the AGS, SPS and RHIC
• RHIC Physics with the Parton Cascade Model
• Hadron production from resonance decay in relativistic collisions
• Measurements of chemical potentials in Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}=5.02$ TeV
• Identified charged antiparticle to particle ratios near midrapidity in Cu+Cu collisions at sqrt(s) = 62.4 and 200 GeV
• Baryon-antibaryon dynamics in relativistic heavy-ion collisions
• A schematic model for QCD II: finite temperature regime
• Strange hadron production in a quark combination model in Au+Au collisions at RHIC energies
• On Hydrodynamical Description of Thermal Photons
• Polarization of Lambda^0 hyperons in nucleus-nucleus collisions at high energies
• Novel scheme for parametrizing the chemical freeze-out surface in Heavy Ion Collision Experiments
• The New Physics at RHIC. From Transparency to High p${}_t$ Suppression
• Energy dependence of transverse quark flow in heavy ion collisions
• Statistical Hadronization as a Snapshot of a dynamical Fireball Evolution
• Estimations of ${\bar{\Omega }}^{+}/{\Omega }^{-}$ at RHIC from a QGP Model with Diquarks
• Effects of nuclear absorption on the antiLambda/antiproton ratio in relativistic heavy ion collisions
• Beam energy dependence of strange hadron production from STAR at RHIC
• Relativistic Heavy-Ion Physics: Experimental Overview
• Formation of light nuclei at chemical freezeout: Description within a statistical thermal model
• Particle Production at the SPS and the QCD Phase Diagram
• Thermal description of transverse-momentum spectra at RHIC
• Hadronization Approach for a Quark-Gluon Plasma Formed in Relativistic Heavy Ion Collisions
• Forward Lambda Production and Nuclear Stopping Power in d + Au Collisions at sqrt(s_NN) = 200 GeV
• News on Strangeness at Ultrarelativistic Energies - Review of Microscopic Models
• Multistrange Hyperon Production on Nuclear Targets
• Stopping and Baryon Transport in Heavy Ion Reactions
• Light-front wavefunction dependence of the quark recombination
• Correlations in the Parton Recombination Model
• Strangeness chemical potential from the baryons relative to the kaons particle ratios
• Study of strange quark density fluctuations in Au+Au Collisions at $\sqrt{s_{NN}}$ = 7.7-200 GeV from AMPT Model
• Global Observables at PHENIX
• Chemical freeze-out systematics of thermal model analysis using hadron yield ratios