J/$\psi ->$e$^{+}$e$^{-}$ measurements in Cu+Cu collisions at $\surd $s$_{NN }$= 200 GeV

J/Psi production in Cu+Cu collisions at $\surd $s$_{NN}$= 200 GeV has been measured by the PHENIX experiment at the Relativistic Heavy Ion Collider (RHIC) in the rapidity ranges $\vert $y$\vert \quad <$ 0.35 and 1.2 $< \quad \vert $y$\vert \quad <$ 2.2 and the transverse momentum range p$_{T} \quad <$ 10 GeV/c via the dielectron and dimuon decay channels. The J/Psi yield and the nuclear modification factor (R$_{AA})$ as a function of centrality, transverse momentum and rapidity were obtained and will be compared with results from p+p and Au+Au collisions at the same center-of-mass energy. The data shows a strong suppression in the J/Psi production as a function of centrality for the most central collisions that is independent of rapidity. A survey of theoretical models will be presented and compared with the J/Psi measurements.