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Transverse momentum distributions in low-mass Drell-Yan lepton pair production at NNLO QCD

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arxiv 2110.15839 v3 pith:INTH7SNG submitted 2021-10-29 hep-ph hep-ex

Transverse momentum distributions in low-mass Drell-Yan lepton pair production at NNLO QCD

R. Gauld , A. Gehrmann-De Ridder , T. Gehrmann , E. W. N. Glover , A. Huss , I. Majer , A. Rodriguez Garcia This is my paper
classification hep-ph hep-ex
keywords momentumperturbativetransversecolliderdistributionsenergiesleptonnnlo
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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The production of lepton pairs at low invariant mass and finite transverse momentum resolves QCD dynamics at the boundary between the perturbative and non-perturbative domains. We investigate the impact of NNLO QCD corrections on these observables at energies corresponding to the BNL RHIC collider and to fixed-target experiments. Satisfactory perturbative convergence is observed in both cases. Only the collider data are found to be well-described by perturbative QCD, thus indicating the importance of non-perturbative effects in lepton-pair transverse momentum distributions at fixed target energies.

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