Scaling properties in bulk and pT-dependent particle production near midrapidity in relativistic heavy ion collisions
- Wyslouch, Boleslaw
- Wenger, Edward Allen
- Veres, Gabor
- Verdier, Robin
- Vaurynovich, Siarhei S.
- van Nieuwenhuizen, Gerrit Jan
- Stephans, George S. F.
- Roland, Gunther M.
- Roland, Christof E.
- Reed, C.
- Loizides, Constantin
- Li, Wei
- Kulinich, Piotr
- Kane, J. L.
- Henderson, C.
- Gulbrandsen, K.
- Ballintijn, Maarten
- Alver, Burak Han
- Busza, Wit
DOIAbstract
The centrality dependence of the midrapidity charged-particle multiplicity density (|η|<1) is presented for Au+Au and Cu+Cu collisions at RHIC over a broad range of collision energies. The multiplicity measured in the Cu+Cu system is found to be similar to that measured in the Au+Au system, for an equivalent Npart, with the observed factorization in energy and centrality still persistent in the smaller Cu+Cu system. The extent of the similarities observed for bulk particle production is tested by a comparative analysis of the inclusive transverse momentum distributions for Au+Au and Cu+Cu collisions near midrapidity. It is found that, within the uncertainties of the data, the ratio of yields between the various energies for both Au+Au and ...
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