System size dependence of freeze-out properties at RHIC

Details System size dependence of freeze-out properties at RHIC System size dependence of freeze-out properties at RHIC

2007-05-04

arxiv.org/abs/0705.0691v1

Int.J.Mod.Phys.E16:1800-1805,2007

Physics

Nuclear Physics

Nuclear Experiment

6 pages, 6 figures, poster proceedings for the Quark Matter 2006 Conference, Shanghai, China, 14th-20th Novermber 2006, submit

Scientific paper

10.1142/S0218301307007027

The STAR experiment at RHIC has measured identified pi(+/-), K(+/-) and p(pbar) spectra and ratios from sqrt(s_NN) = 62.4 and 200 GeV Cu+Cu collisions. The new Cu+Cu results are studied with hydro-motivated blast-wave and statistical model frameworks in order to characterize the freeze-out properties of this system. Along with measurements from Au+Au and p+p collisions, the obtained freeze-out parameters are discussed as a function of collision energy, system size, centrality and inferred energy density. This multi-dimensional systematic study reveals the importance of the collision geometry and furthers our understanding of the QCD phases.

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