Jet quenching for measuring the QCD collectivity temporal structure

Abstract

In this thesis we use the medium-induced gluon radiation spectrum to study the quark gluon plasma generated at the LHC. In particular, we employ a new computational algorithm that exactly resums the QCD potential without truncations — either in the opacity expansion or the perturbative tails. First, we compare the fully resummed spectrum with different analytical approaches, improving our understanding of the physics behind the emission process. Then, we find an efficient way of computing the radiation spectrum in a realistically evolving media described by a hydrodynamical simulation, a crucial step to implement the framework in phenomenology. Finally, we analyze the impact that the propagation during the initial stages of the collision, which is usually neglected, has on jet quenching observables.