Skip to main navigation Skip to search Skip to main content

Semihard Scattering Unraveled from Collective Dynamics by Two-Pion Azimuthal Correlations in [Formula presented] [Formula presented] Collisions

  • G. Agakichiev
  • , H. Appelshäuser
  • , R. Baur
  • , J. Bielcikova
  • , P. Braun-Munzinger
  • , A. Cherlin
  • , A. Drees
  • , S. I. Esumi
  • , K. Filimonov
  • , Z. Fraenkel
  • , Ch Fuchs
  • , P. Glässel
  • , G. Hering
  • , P. Huovinen
  • , B. Lenkeit
  • , A. Marín
  • , F. Messer
  • , M. Messer
  • , J. Milosevic
  • , D. Miśkowiec
  • O. Nix, Yu Panebrattsev, V. Petráček, A. Pfeiffer, J. Rak, I. Ravinovich, S. Razin, P. Rehak, H. Sako, N. Saveljic, W. Schmitz, S. Shimansky, E. Socol, H. J. Specht, J. Stachel, H. Tilsner, I. Tserruya, C. Voigt, S. Voloshin, C. Weber, J. P. Wessels, J. P. Wurm, V. Yurevich
  • GSI Helmholtz Centre for Heavy Ion Research
  • Heidelberg University 
  • Max Planck Institute for Nuclear Physics
  • Weizmann Institute of Science
  • University of Minnesota Twin Cities
  • Stony Brook University
  • Joint Institute for Nuclear Research
  • Brookhaven National Laboratory

Research output: Contribution to journalArticlepeer-review

Abstract

Elliptic flow and two-particle azimuthal correlations of charged hadrons and high-[Formula presented] pions ([Formula presented]) have been measured close to midrapidity in [Formula presented] [Formula presented] collisions by the CERES experiment. Elliptic flow ([Formula presented]) rises linearly with [Formula presented] to a value of about [Formula presented] at [Formula presented]. Beyond [Formula presented], the slope decreases considerably, possibly indicating a saturation of [Formula presented] at high [Formula presented]. Two-pion azimuthal anisotropies for [Formula presented] exceed the elliptic flow values by about [Formula presented] in midcentral collisions. These nonflow contributions are attributed to nearside and back-to-back jetlike correlations, the latter exhibiting centrality dependent broadening.

Original languageEnglish
Pages (from-to)5
Number of pages1
JournalPhysical Review Letters
Volume92
Issue number3
DOIs
StatePublished - 2004

Fingerprint

Dive into the research topics of 'Semihard Scattering Unraveled from Collective Dynamics by Two-Pion Azimuthal Correlations in [Formula presented] [Formula presented] Collisions'. Together they form a unique fingerprint.

Cite this