11th International Conference on Hard and Electromagnetic Probes of High-Energy Nuclear Collisions

In this work, by exploiting jet substructure techniques, we identify the transition from early-time perturbative splittings to late-time non-perturbative emissions and its associated timescale at both RHIC and LHC energies. We introduce three experimentally robust splittings along the jet clustering tree, each related to the perturbative, non-perturbative-like regions and the transition between them. The population of such splittings is quantified via a first phenomenological study of the formation time in a Monte Carlo model to highlight its sensitivities and discuss its experimental feasibility. Finally, we show how these timescales change in a scenario when jet quenching effects, induced by an extended Quark-Gluon Plasma, take place along the parton shower.