Jet substructure with analytical methods

TL;DR

This paper analytically studies the mass distribution of QCD jets after applying various jet substructure techniques, providing insights that could improve future tools for LHC physics analysis.

Contribution

It performs next-to-leading order analytical calculations of jet substructure methods, offering a contrast to Monte Carlo approaches and enhancing understanding of their behavior.

Findings

Analytical calculations match fixed-order results.

Dominant logarithmic behaviors are identified.

Insights for improving jet substructure techniques.

Abstract

We consider the mass distribution of QCD jets after the application of jet substructure methods, specifically the mass-drop tagger, pruning, trimming and their variants. In contrast to most current studies employing Monte Carlo methods, we carry out analytical calculations at the next-to-leading order level, which are sufficient to extract the dominant logarithmic behaviour for each technique, and compare our findings to exact fixed-order results. Our results should ultimately lead to a better understanding of these jet substructure methods which in turn will influence the development of future substructure tools for LHC phenomenology.