Non-perturbative effects in the transverse momentum distribution of electroweak bosons at the LHC

TL;DR

This paper introduces a new non-perturbative gluon emission model in initial state parton showers that accurately describes the transverse momentum distribution of electroweak bosons at the LHC, improving theoretical predictions.

Contribution

A novel non-perturbative gluon emission model in initial state parton showers that matches experimental data across various energies and predicts Z boson transverse momentum at the LHC.

Findings

Model describes previous experimental data well

Predicts Z boson pT distribution at LHC accurately

Provides a basis for comparing different theoretical approaches

Abstract

The transverse momentum of electroweak bosons in a Drell-Yan process is an important quantity for the experimental program at the LHC. The new model of non-perturbative gluon emission in an initial state parton shower presented in this note gives a good description of this quantity for the data taken in previous experiments over a wide range of CM energy. The model's prediction for the transverse momentum distribution of Z bosons for the LHC is presented and used for a comparison with other approaches.