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Centrality dependent particle production at y=0 and y~1 in Au+Au collisions at sNN= 200 GeV

  • I. Arsene*
  • , I. G. Bearden
  • , D. Beavis
  • , C. Besliu
  • , B. Budick
  • , H. Bøggild
  • , C. Chasman
  • , C. H. Christensen
  • , P. Christiansen
  • , J. Cibor
  • , R. Debbe
  • , E. Enger
  • , J. J. Gaardhøje
  • , M. Germinario
  • , K. Hagel
  • , H. Ito
  • , A. Jipa
  • , F. Jundt
  • , J. I. Jørdre
  • , C. E. Jørgensen
  • R. Karabowicz, E. J. Kim, T. Kozik, T. M. Larsen, J. H. Lee, Y. K. Lee, S. Lindal, R. Lystad, G. Løvhøiden, Z. Majka, A. Makeev, M. Mikelsen, M. Murray, J. Natowitz, B. Neumann, B. S. Nielsen, D. Ouerdane, R. Płaneta, F. Rami, C. Ristea, O. Ristea, D. Röhrich, B. H. Samset, D. Sandberg, S. J. Sanders, R. A. Scheetz, P. Staszel, T. S. Tveter, F. Videbaek, R. Wada, Z. Yin, I. S. Zgura
*Corresponding author for this work
  • University of Bucharest
  • University of Copenhagen
  • Brookhaven National Laboratory
  • New York University
  • Polish Academy of Sciences
  • University of Oslo
  • Texas A&M University
  • Université de Strasbourg
  • University of Bergen
  • Jagiellonian University in Kraków
  • University of Kansas
  • Johns Hopkins University

Research output: Contribution to journalJournal articlepeer-review

Abstract

Particle production of identified charged hadrons, π±,K±, p, and p̄ in Au+Au collisions at sNN= 200 GeV, has been studied as a function of transverse momentum and collision centrality at y=0 and y~1 by the BRAHMS experiment at Brookhaven National Laboratory's Relativistic Heavy-Ion Collider. Significant collective transverse flow at kinetic freeze-out has been observed in the collisions. The magnitude of the flow rises with the collision centrality. Proton and kaon yields relative to the pion production increase strongly as the transverse momentum increases and also increase with centrality. Particle yields per participant nucleon show a weak dependence on the centrality for all particle species. Hadron production remains relatively constant within one unit around midrapidity in Au+Au collisions at sNN= 200 GeV.

Original languageEnglish
Article number014908
JournalPhysical Review C - Nuclear Physics
Volume72
Issue number1
DOIs
StatePublished - 2005.07

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