Measurement of the mid-rapidity transverse energy distribution from sNN=130 GeV Au+Au collisions at RHIC
PHENIX Collaboration, K. Adcox
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 ET / Nch 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(sNN)=130 GeV is at least epsilonBj = 4.6 GeV/fm3 which is a factor of 1.6 larger than found at sqrt(sNN)=17.2 GeV (Pb+Pb at CERN).
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