Non-Global and Clustering Effects for Groomed Multi-Prong Jet Shapes

TL;DR

This paper develops a precise theoretical framework to account for non-global and clustering effects in groomed multi-prong jet observables, showing these effects are universal and have minimal impact on spectra.

Contribution

It provides a next-to-leading logarithmic resummation of non-global and clustering effects for groomed multi-pronged jets, highlighting their universality and small influence.

Findings

Non-global and clustering effects depend only on flavor structure and opening angle.

Spectral differences with and without these effects are minimal.

The effects are universal, independent of the hard process or underlying event.

Abstract

We present a resummation valid to next-to leading logarithmic accuracy of the non-global and clustering effects in groomed (with modified mass drop tagger) multi-pronged observables. These effects are universal in the sense that they depend only on the flavor structure of the $1\to 2$ splitting forming the multi-pronged subjets and the opening angle of the splitting, being insensitive to the underlying hard process or underlying event. The differential spectra with and without the non-global and clustering effects are presented, and the change in the spectra is found to be small.