Transverse-momentum resummation at mixed QCD$\otimes$QED NNLL accuracy for Z boson production at hadron colliders

TL;DR

This paper develops a theoretical framework for accurately predicting the transverse momentum distribution of Z bosons at hadron colliders by combining QCD and QED resummation techniques up to NNLL accuracy, revealing percent-level effects.

Contribution

It introduces a novel mixed QCD and QED resummation approach at NNLL accuracy for Z boson production, extending previous pure QCD methods.

Findings

Percent-level effects from mixed QCD$ imes$QED resummation

Enhanced precision in Z boson transverse momentum predictions

Impact on collider phenomenology and measurements

Abstract

We consider the transverse momentum ($q_T$) distribution of neutral charged bosons at hadron colliders. We perform the resummation of the logarithmically-enhanced effects due to simultaneous QCD and QED initial-state radiation, up to mixed next-to-next-to-leading logarithmic (NNLL) accuracy. We study the impact of such mixed QCD$\otimes$QED resummed contributions on top of pure QCD corrections, finding percent-level effects.