Jet and jet substructure: ALICE results

TL;DR

This paper reviews recent ALICE experiment measurements of jet substructure in various collision systems, providing insights into QCD phenomena and the properties of quark-gluon plasma through high-precision data and model comparisons.

Contribution

It presents new high-precision measurements of jet substructure in pp, p-Pb, and Pb-Pb collisions, advancing understanding of QCD and QGP properties.

Findings

Data generally agree with MC models in pp collisions

Jet quenching observed in Pb-Pb collisions

Insights into hadronization and non-perturbative effects

Abstract

Jets and their substructure in pp collisions offer a unique opportunity to probe various aspects of quantum chromodynamics (QCD), ranging from perturbative QCD (pQCD) tests to studies 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 high-precision tracking system, which is especially beneficial for detecting low transverse momentum jets. This contribution will highlight recent ALICE measurements of inclusive and semi-inclusive jets, along with various jet substructure observables in pp, p-Pb, and Pb-Pb collisions. The comparisons between data and predictions from Monte Carlo (MC) models as well as analytical calculations will be discussed.