Systematic studies of the centrality and {radical}(s{sub {sub N}}{sub {sub N}}) dependence of the dE{sub T}/d{eta} and dN{sub ch}/d{eta} in heavy ion collisions at midrapidity
- Brookhaven National Laboratory, Upton, New York 11973-5000 (United States); and others
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 {radical}(s{sub NN})=19.6,130, and 200 GeV as a function of centrality. The presented results are compared to measurements from other RHIC experiments and experiments at lower energies. The {radical}(s{sub NN}) dependence of dE{sub T}/d{eta} and dN{sub ch}/d{eta} per pair of participants is consistent with logarithmic scaling for the most central events. The centrality dependence of dE{sub T}/d{eta} and dN{sub ch}/d{eta} 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 {radical}(s{sub NN}). A survey of comparisons between the data and available theoretical models is also presented.
- OSTI ID:
- 20696016
- Journal Information:
- Physical Review. C, Nuclear Physics, Vol. 71, Issue 3; Other Information: DOI: 10.1103/PhysRevC.71.034908; (c) 2005 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2813
- Country of Publication:
- United States
- Language:
- English
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