# Jet substructure measurements in pp collisions at $\sqrt{s}$ = 13 TeV with ALICE

## TL;DR

This paper reports detailed jet substructure measurements in proton-proton collisions at 13 TeV using ALICE, focusing on groomed jet momentum fraction and other observables, comparing results with theoretical predictions and simulations.

## Contribution

It provides high-precision jet substructure data at 13 TeV with ALICE, including groomed jet momentum fraction and track-based jets, enhancing understanding of QCD processes.

## Key findings

- Jet substructure observables agree with pQCD calculations.
- Measurements show dependence on jet resolution and event activity.
- ALICE's capabilities enable precise substructure measurements with low constituent cutoff.

## Abstract

We present a variety of jet substructure measurements performed in pp collisions at $\sqrt{s}$ = 13 TeV with the focus on the groomed jet momentum fraction $z_{\rm{g}}$ in a wide range of $p_{\rm{T}}$ between 20 and 200 GeV/$c$ and jet resolution $0.2 < R < 0.5$. Thanks to the capabilities of the ALICE apparatus jet substructure measurement are possible with an infrared constituent cutoff at 0.3 GeV. Furthermore, the angular resolution of the ALICE detectors allows the measurement of jet substructure observables with a high precision. The measurements are compared to pQCD calculations and MC generators. Furthermore, the measurement of track-based jets at the same centre-of-mass energy and its dependence on the event activity are presented for different jet resolutions.