Towards a study of the effects of dynamical factorization breaking at LHCb

TL;DR

This paper discusses the potential breakdown of factorization in high-energy proton-proton collisions at LHCb, focusing on azimuthal correlations in Z+jet events to study non-factorizable effects.

Contribution

It proposes a method to investigate dynamical factorization breaking using Z+jet production and azimuthal correlations at LHCb.

Findings

Plan for measuring azimuthal correlations with LHCb data

Identification of non-factorizable effects in transverse momentum distributions

Potential to challenge standard factorization assumptions in QCD

Abstract

The factorization of short-distance partonic cross-sections from universal long-distance kinematic distributions is fundamental to phenomenology at hadron colliders. It has been predicted however that observables sensitive to momenta transverse to the direction of an energetic parton cannot be factorized in the usual way, even at high energies. It should be possible to study this factorization breaking using Z+jet production in high-energy proton-proton collisions by studying azimuthal correlations between a Z boson and associated charged hadrons. A plan to perform this measurement with data collected by LHCb will be discussed, along with related work.