Quantifying jet modifications with substructure

TL;DR

This paper reviews how jet substructure modifications in heavy-ion collisions can reveal details of parton energy loss mechanisms and medium properties, emphasizing the importance of jet scale dependence and multi-parton quenching insights.

Contribution

It introduces a leading-logarithmic correction framework for jet spectra based on multi-parton quenching, advancing understanding of jet-medium interactions.

Findings

Jet suppression depends on jet scales due to medium resolution effects.

Leading-logarithmic corrections improve jet spectrum predictions.

Jet substructure observables are sensitive to medium-induced modifications.

Abstract

The striking suppression and modification patterns that are observed in jet observables measured in heavy-ion collisions with respect to the proton-proton baseline have the potential to constrain the spatio-temporal branching process of energetic partons in a dense QCD medium. The mechanism of jet energy loss is intricately associated with medium resolution of jet substructure fluctuations. This naturally affects the behavior of the suppression of jets at high-pT, inducing an explicit dependence on jet scales. In this contribution, we review recent work on using the insight from multi-parton quenching to calculate leading-logarithmic corrections to the single-inclusive jet spectrum, and discuss its impact on a wide range of observables, including jet substructure.