Hadron-string cascade versus hydrodynamics in Cu+Cu collisions at   $\sqrt{s_{NN}}=200$ GeV
  Single particle spectra as well as elliptic flow in Cu+Cu collisions at $\sqrt{s_{NN}}=200$ GeV are investigated within a hadronic cascade model and an ideal hydrodynamic model. Pseudorapidity distribution and transverse momentum spectra for charged hadrons are surprisingly comparable between these two models. However, a large deviation is predicted for the elliptic flow. The forthcoming experimental data will clarify the transport and thermalization aspects of matter produced in Cu+Cu collisions. 
T. Hirano, M. Isse, Y. Nara, A. Ohnishi, K. Yoshino