Jet Quenching at the LHC

The smallest building blocks of matter, quarks and gluons (partons), are ordinarily confined within hadrons. At the extreme temperatures and energy densities reached in high-energy heavy-ion collisions at the Large Hadron Collider (LHC), these quarks and gluons become deconfined and form a strongly interacting Quark–Gluon Plasma (QGP). This medium behaves as an almost perfect, opaque fluid, yet its fundamental properties remain under exploration. Jets, produced in the early stages of high-energy particle collisions, provide powerful probes of the QGP. As these high-momentum partons traverse the medium, they lose energy and undergo modifications to their internal structure, a phenomenon known as jet quenching. In this talk, I will present recent jet quenching measurements from the LHC, highlighting advances in precision, novel differential observables that isolate different jet-medium interactions, and new constraints on QGP properties from comparisons to state-of-the-art theoretical calculations.