Fragmentation of CDF jets: perturbative or non-perturbative?

TL;DR

This paper presents recent CDF jet fragmentation measurements, comparing experimental data with Monte Carlo simulations and perturbative QCD calculations to understand the nature of jet fragmentation.

Contribution

It provides new experimental results on jet fragmentation across a wide energy range and compares them with theoretical models and simulations.

Findings

Experimental distributions of charged particle momenta and kT in jets.

Average track multiplicities and angular distributions analyzed.

Comparison with Monte Carlo and perturbative QCD calculations.

Abstract

Presented are the most recent jet fragmentation results from CDF: inclusive distributions of charged particle momenta and their kT in jets; average track multiplicities, as well as angular distributions of multiplicity flow, for a wide range of jet energies with ET from 40 to 300 GeV. The results are compared with Monte-Carlo and, when possible, analytical calculations performed in resummed perturbative QCD approximations (MLLA).