Suppression of high-pT particle production in AA collisions: the role of   in-medium color-flow
  The suppression of high-pT single-hadron spectra in heavy-ion collisions is usually interpreted as due to parton energy-loss of high-momentum quarks and gluons propagating in the plasma. Here, we discuss to what extent this partonic picture must be complemented by a picture of medium-modified hadronization. In particular, we show how color-exchange with the medium modifies the properties of color singlet-clusters arising from the parton branchings, producing a softening of the hadron spectra. 
A. Beraudo, J.G. Milhano and U.A. Wiedemann
hep-ph nucl-ex nucl-th