Tomography of the quark?gluon plasma by heavy quarks

Using the recently published model [1, 2] for the collisional energy loss of heavy quarks in a quark–gluon plasma (QGP), based on perturbative QCD (pQCD), we study the centrality dependence of RAA and RAA(pminT), measured by the PHENIX Collaboration, and compare our model with other approaches based on pQCD and on anti de Sitter/conformal field theory (AdS/CFT).