Description
Jets and their substructure in pp collisions offer a unique opportunity to probe various aspects of quantum chromodynamics (QCD), ranging from perturbative QCD tests to the study of non-perturbative phenomena such as hadronization. They also probe the transition between perturbative and non-perturbative regimes. In heavy-ion collisions, jets serve as a novel tool to investigate the microscopic properties of the deconfined quark-gluon plasma (QGP). Recently, significant progress has been made in developing jet substructure observables to explore these properties. The ALICE experiment is particularly well-suited for jet measurements due to its advanced high-precision tracking system, which is especially beneficial for detecting low transverse momentum jets.
This talk will highlight recent ALICE measurements of inclusive and semi-inclusive jets, along with various jet substructure observables in both pp and Pb-Pb collisions. These substructure studies encompass the jet Lund plane map, jet angularities, groomed jet momentum fraction, groomed jet radius, number of soft drop splittings, subjet fragmentation functions, and two-point energy correlator. The comparisons between data and predictions from Monte Carlo (MC) models as well as analytical calculations will be discussed.