Physics and Astronomy
Journal or Book Title
Physical Review Letters
The first measurement of energy produced transverse to the beam direction at the Relativistic Heavy-Ion Collider at Brookhaven National Laboratory is presented. The midrapidity 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 √sNN=130GeV is at least εBj=4.6 GeV/fm3, which is a factor of 1.6 larger than found at √sNN=17.2 GeV ( Pb+Pb at CERN).
American Physical Society
Adcox, K.; Belikov, Sergey; Hill, John C.; Lajoie, John G.; Lebedev, Alexandre; Ogilvie, Craig; Petridis, Athanasios; Rosati, Marzia; Wohn, F. K.; et al.; and PHENIX Collaboration, "Measurement of the midrapidity transverse energy distribution from root(NN)-N-S=130 GeV Au+Au collisions at RHIC" (2001). Physics and Astronomy Publications. 361.