  We perform an analysis of jet quenching in heavy and light ion collisions for
scenarios without and with quark-gluon plasma formation in $pp$ collisions. We
find that the results for these scenarios are very similar, and both of them
are in reasonable agreement with data for heavy ion collisions. However, their
results become differ significantly for light nuclei. Using the parameters
fitted to heavy ion data on the nuclear modification factor $R_{AA}$, we make
predictions for 0.2 and 7 TeV O+O collisions that can be verified by future
experiments at RHIC and the LHC.

High Energy Physics - Phenomenology;Nuclear Theory