Measurements of transverse energy distributions in Au + Au collisions at s(NN)**(1/2) = 200-GeV

Collaboration
Jul, 2004
15 pages
Published in:
  • Phys.Rev.C 70 (2004) 054907
e-Print:
Experiments:

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Abstract:
Transverse energy (ETE_T) distributions have been measured for Au+Au collisions at sNN=200\sqrt{s_{NN}}= 200 GeV by the STAR collaboration at RHIC. ETE_T is constructed from its hadronic and electromagnetic components, which have been measured separately. ETE_T production for the most central collisions is well described by several theoretical models whose common feature is large energy density achieved early in the fireball evolution. The magnitude and centrality dependence of ETE_T per charged particle agrees well with measurements at lower collision energy, indicating that the growth in ETE_T for larger collision energy results from the growth in particle production. The electromagnetic fraction of the total ETE_T is consistent with a final state dominated by mesons and independent of centrality.
  • nucleus nucleus: colliding beams
  • scattering: heavy ion
  • gold
  • hadron: multiple production
  • charged particle: multiplicity
  • energy spectrum: transverse energy
  • transverse energy: hadronic
  • transverse energy: electromagnetic
  • impact parameter: dependence
  • STAR