  Results for high multiplicity pp and p-Pb collisions at the LHC have revealed
that these small collision systems exhibit features of collectivity. To
understand the origin of these unexpected phenomena, the relative transverse
activity classifier ($R_{\rm{T}}$) can be exploited as a tool to disentangle
soft and hard particle production, by studying the yield of charged particles
in different topological regions associated with transverse momentum trigger
particles. This allows to study system size dependence of charged particle
production of different origins and in particular search for jet-quenching
effects. Here, results on the system size and $R_{\rm{T}}$ dependence of
charged particle production in pp, p-Pb and Pb-Pb collisions at $\sqrt{s_{\rm
NN}}$ = 5.02 TeV are presented.
