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arXiv · 2110.15839

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
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Abstract

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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R. Gauld, A. Gehrmann-De Ridder, T. Gehrmann, E. W. N. Glover, A. Huss, I. Majer, A. Rodriguez Garcia. 2021-10-29. Transverse momentum distributions in low-mass Drell-Yan lepton pair production at NNLO QCD. https://doi.org/10.1016/j.physletb.2022.137111

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