Recent progress in defining and understanding jets

TL;DR

This paper reviews recent advances in jet finding algorithms at hadron colliders, including new algorithms, computational methods, pileup subtraction techniques, and improved understanding of QCD effects on jet measurements.

Contribution

It presents the latest developments in jet algorithms, computational approaches, and theoretical understanding, enhancing precision in jet physics at colliders.

Findings

Development of an infrared safe seedless cone algorithm

Implementation of fast computational methods for jet finders

Universal pileup subtraction techniques

Abstract

This talk reviews some key developments that have taken place in hadron-collider jet finding over the past couple of years, including: technical advances such as the complete formulation of an infrared safe seedless cone algorithm and fast computational approaches to sequential recombination jet finders like the kt algorithm, together with universal methods for subtracting pileup; progress in understanding the sensitivity of jet algorithms to the underlying event and hadronisation; and work that exploits our knowledge of QCD divergences to better define and predict heavy-flavour jet cross sections.