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Transverse Energy Measurement in Au+Au Collisions by the STAR Experiment

Abstract : Transverse energy ($E_T$) has been measured with both of its components, namely hadronic ($E_T^{had}$) and electromagnetic ($E_T^{em}$) in a common phase space at mid-rapidity for 62.4 GeV Au+Au collisions by the STAR experiment. $E_T$ production with centrality and $\sqrt{s_{NN}}$ is studied with similar measurements from SPS to RHIC and is compared with a final state gluon saturation model (EKRT). The most striking feature is the observation of a nearly constant value of $E_T/N_{ch} \sim 0.8$ GeV from AGS, SPS to RHIC. The initial energy density estimated by the boost-invariant Bjorken hydrodynamic model, is well above the critical density for a deconfined matter of quarks and gluons predicted by lattice QCD calculations.
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Contributor : Dominique Girod <>
Submitted on : Friday, June 20, 2008 - 10:14:19 AM
Last modification on : Wednesday, March 4, 2020 - 3:12:02 PM

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R. Sahoo. Transverse Energy Measurement in Au+Au Collisions by the STAR Experiment. 20th International Conference on Ultra-Relativistic Nucleus Nucleus Collisions (Quark Matter 2008), Feb 2008, Jaipur, India. pp.897-901, ⟨10.1007/s12648-011-0096-5⟩. ⟨in2p3-00289238⟩



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