Speaker
Description
Jet substructure, defined by observables constructed from the distribution of constituents within a jet, provides the versatility to tailor observables to specific regions of QCD radiation phase space. This flexibility allows us to test not only our understanding of perturbative QCD but also the nature of nonperturbative effects including hadronization — and has resulted in jet substructure becoming an essential tool to study rare event topologies in searches for new physics. In this talk, I will highlight recent jet substructure measurements at the LHC and RHIC. I will discuss measurements in proton-proton collisions, which enable differential tests of our understanding of perturbative QCD, and measurements in heavy-ion collisions, which provide exciting new opportunities to reveal the nature of the quark-gluon plasma.