Measurement of the mid-rapidity transverse energy distribution from s(NN)**(1/2) = 130-GeV Au + Au collisions at RHIC

Collaboration
Apr, 2001

Citations per year

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Abstract:
The first measurement of energy produced transverse to the beam direction at RHIC is presented. The mid-rapidity transverse energy density per participating nucleon rises steadily with the number of participants, closely paralleling the rise in charged-particle density, such that E_T / N_ch remains relatively constant as a function of centrality. The energy density calculated via Bjorken's prescription for the 2% most central Au+Au collisions at sqrt(s_NN)=130 GeV is at least epsilon_Bj = 4.6 GeV/fm^3 which is a factor of 1.6 larger than found at sqrt(s_NN)=17.2 GeV (Pb+Pb at CERN).
Note:
  • 307 authors, 6 pages, 4 figures, 1 table, submitted to PRL 4/18/2001: revised version submitted to PRL 5/24/2001 Journal-ref: Phys.Rev.Lett. 87, 052301 (2001)
  • scattering: heavy ion
  • gold
  • multiple production
  • rapidity: central region
  • energy: density
  • transverse energy: density
  • multiplicity: density
  • PHENIX
  • experimental results
  • Brookhaven RHIC Coll