Heavy flavor production is a sensitive probe of all stages in the evolution of a heavy ion collision system, and in particular heavy quarkonia could be direct probes of quark deconfinement in A+A collisions. The characterization of the competing effects on the yield in heavy ion collisions (like energy loss or suppression by collisions with initial partons or co-movers) requires a detailed description of the production, from p+p and p+A to A+A collisions.
The unique versatility and increasing performance of the BNL/RHIC collider has provided several beams combinations at √SNN from 7 to 500GeV. Also, improvements of the PHENIX experiment allow deeper study than has been previously published.
This talk aims at presenting recent PHENIX results on J/ψ, ψ′ and open charm and beauty productions at √SNN=200GeV in several collision systems and focus on the additional degrees of freedom in p+A and A+A collisions have compared to p+p collisions.
