  After almost two decades of investigation, jet quenching has become a
fundamental tool to study the properties of the QCD matter produced in
high-energy nuclear collisions. Despite the large progress in both experimental
and theoretical tools, several unknowns remain to be solved. In particular the
systematics of the QCD matter parameters extracted at different energies and
centralities is still puzzling. On the other hand, a lot of attention has been
put in the last few years to a correct resummation of the multiple scatterings
that the particles of the jet suffer when traversing the QCD matter. Present
formalisms have substantially improved the multiple-soft or single hard
scattering approximations, common in the last twenty years. We show here that
medium parameters extracted with full resummed medium-induced gluon radiation
spectra significantly differ from these two extreme approximations, providing a
natural systematics for different collision energies and centralities, with no
inconsistencies. For the case of the full resummation this ensures that the
density of scattering centers as a function of the temperature qualitatively
agree with the equation of state computed in lattice QCD.
