Charged jet production cross section ratio for different resolution parameters as defined in Eq.[7]. The data in p-Pb collisions at $\snn = 5.02$ TeV are compared to PYTHIA6 (tune: Perugia 2011, no uncertainties shown) and POWHEG+PYTHIA8 (combined stat. and syst. uncertainties shown) at the same energy, and to pp collisions at 7 TeV (only stat. uncertainties shown).