Systematic studies of the centrality and root s(NN) dependence of the dE(T)/d eta and dN(ch)/d eta in heavy ion collisions at midrapidity

Date
2005-03-01
Authors
Adler, S.
Belikov, Sergey
Bhagavatula, S.
Constantin, Paul
Grau, Nathan
Hill, John
Lajoie, John
Lebedev, Alexandre
Ogilvie, Craig
Rak, Jan
Rosati, Marzia
Wohn, F.
et al.
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Abstract

The PHENIX experiment at the relativistic heavy ion collider (RHIC) has measured transverse energy and charged particle multiplicity at midrapidity in Au+Au collisions at center-of-mass energies √sNN=19.6,130, and 200GeV as a function of centrality. The presented results are compared to measurements from other RHIC experiments and experiments at lower energies. The √sNN dependence of dET/dη and dNch/dη per pair of participants is consistent with logarithmic scaling for the most central events. The centrality dependence of dET/dη and dNch/dη is similar at all measured incident energies. At RHIC energies, the ratio of transverse energy per charged particle was found to be independent of centrality and growing slowly with √sNN. A survey of comparisons between the data and available theoretical models is also presented.

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This article is published as Adler, Stephen Scott, S. Afanasiev, C. Aidala, N. N. Ajitanand, Y. Akiba, J. Alexander, R. Amirikas et al. "Systematic studies of the centrality and s NN dependence of the d E T/d η and d N ch/d η in heavy ion collisions at midrapidity." Physical Review C 71, no. 3 (2005): 034908. DOI: 10.1103/PhysRevC.71.034908. Posted with permission.

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