# Measurement of the mid-rapidity transverse energy distribution from $\sqrt{s_{NN}}=130$ GeV Au+Au collisions at RHIC

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).
Document type :
Journal articles
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http://hal.in2p3.fr/in2p3-00131859
Contributor : Dominique Girod <>
Submitted on : Monday, February 19, 2007 - 3:47:27 PM
Last modification on : Tuesday, January 5, 2021 - 9:30:19 AM

### Citation

K. Adcox, S.S. Adler, N. N. Ajitanand, Y. Akiba, J. Alexander, et al.. Measurement of the mid-rapidity transverse energy distribution from $\sqrt{s_{NN}}=130$ GeV Au+Au collisions at RHIC. Physical Review Letters, American Physical Society, 2001, 87, pp.052301. ⟨10.1103/PhysRevLett.87.052301⟩. ⟨in2p3-00131859⟩

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