A bstract We consider the transverse-momentum (q T) distribution of Drell-Yan lepton pairs produced with invariant masses (M) from low values up to the Z -boson peak (4 ≤ M ≤ 116 GeV). We present perturbative predictions obtained by consistently combining the resummation of logarithmically enhanced QCD corrections at small q T (q T ≪ M) up to next-to-next-to-next-to-next-to-leading logarithmic accuracy with the available fixed-order calculations at next-to-next-to-leading order (i. e. O (ₒ^3) ) valid at large q T. For very low q T (q T ~ Λ QCD), non-perturbative (NP) QCD effects become dominant and have been included through a NP form factor with a small number of free-parameters. We compare our results with multiple experimental datasets from hadron colliders, finding excellent agreement between theory and data. By fitting the NP parameters, we achieve a precise extraction of the NP form factor and the so-called Collins-Soper kernel.
Camarda et al. (Thu,) studied this question.