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arXiv · 2610.40879

Transverse momentum correlations and QED effects in TMD determinations

Laurent Favart·Francesco Hautmann·Aleksandra Lelek·Louis Moureaux
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Abstract

Extractions of the non-perturbative, transverse momentum dependent (TMD) hadron's structure from experimental measurements of vector-boson spectra at hadron colliders are strongly influenced by correlations across boson's transverse momentum bins and by Quantum Electrodynamics (QED) effects, both from photon emission and from the photon-photon collision background. We present a Monte Carlo framework to take this into account, and illustrate the results with a comparison of theoretical predictions with the high-precision LHCb measurements of $Z$-boson production in the forward rapidity region. We discuss the relationship with the CMS data set at central rapidities.

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Laurent Favart, Francesco Hautmann, Aleksandra Lelek, Louis Moureaux. 2026-10-29. Transverse momentum correlations and QED effects in TMD determinations. https://arxiv.org/abs/2610.40879

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