Transverse Energy Measurements from the Beam Energy Scan in PHENIX

Mitchell, J. T. and Adare, A. and Afanasiev, S. and Aidala, C. and Ajitanand, N. N. and Csanád, Máté and Csörgő, Tamás and Kincses, Dániel and Kiss, Ádám and Varga-Kőfaragó, Mónika and Nagy, Márton and Novák, Tamás and Ster, András and Sziklai, János István and Tarján, Péter and Ujvári, Balázs and Vargyas, Márton and Vértesi, Róbert and Zimányi, József (2016) Transverse Energy Measurements from the Beam Energy Scan in PHENIX. NUCLEAR PHYSICS A, 956. pp. 842-845. ISSN 0375-9474

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Abstract

Transverse energy distributions at midrapidity have been measured by the PHENIX experiment at the BNL Relativistic Heavy Ion Collider (RHIC) for Au+Au, U+U, Cu+Au, Cu+Cu, 3He+Au, d+Au, and p+p collisions over a wide energy range from √sNN = 7.7 GeV to √sNN = 200 GeV as a function of centrality. For central Au+Au collisions, it is observed that the midrapidity Bjorken energy density demonstrates a power law behavior from √sNN = 7.7 GeV to √sNN = 2.76 TeV. At a given collision energy, the data presented as a function of Npart are independent of the size of the collision system. For Au+Au, Cu+Au, and Cu+Cu collisions, the centrality-dependent data are better described by scaling with the number of constituent quark participants than scaling with the number of nucleon participants.

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