# NLL${'}$ resummation of jet mass

## TL;DR

This paper develops a resummation framework for jet mass and energy distribution observables using effective field theory, including NLO corrections, improving data agreement and reducing uncertainties.

## Contribution

It introduces a novel resummation method for non-global observables with full NLO corrections within an effective field theory framework.

## Key findings

- Enhanced agreement with experimental data
- Reduced theoretical uncertainties
- First step towards higher-logarithmic resummation

## Abstract

Starting from a factorization theorem in effective field theory, we present resummed results for two non-global observables: the invariant-mass distribution of jets and the energy distribution outside jets. Our results include the full next-to-leading-order corrections to the hard, jet and soft functions and are implemented in a parton-shower framework which generates the renormalization-group running in the effective theory. The inclusion of these matching corrections leads to an improved description of the data and reduced theoretical uncertainties. They will have to be combined with two-loop running in the future, but our results are an important first step towards the higher-logarithmic resummation of non-global observables.