Speaker
Description
QCD jets play a central role in probing QCD at high precision and in new physics searches at colliders. They are also extensively studied in ultra relativistic heavy ion collisions as multi-dimensional probes of the quark gluon plasma (QGP) that is created in the aftermath of the collisions. While the theory for jet evolution in vacuum is well established, in the presence of a hot and dense QCD medium new emergent phenomena take place as a result of jet-medium interactions that have been recently uncovered and are currently being studied. In this talk, I will focus on the emblematic observable of jet quenching that is the nuclear modification factor and show that by exploring its dependence on jet pT, collision centrality and jet cone size we can extract valuable information about the dynamics and mechanisms of jet energy loss. I will in particular present a recent theoretical calculation that accounts for quantum interferences effects on energy loss that parton shower undergo in the QGP. I will also show predictions that were recently compared to ATLAS and ALICE data.
