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Vector boson production at hadron colliders: transverse-momentum resummation and leptonic decay

2015/07/31 by Stefano Catani, Daniel de Florian, Giancarlo Ferrera +1 · 3 citations
Physics and Astronomy · #Boson #Electron #Electroweak interaction #Gauge (firearms) #Hadron #High-Energy Particle Collisions Research #Large Hadron Collider #Lepton #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Physics #Production (economics) #Quantum Chromodynamics and Particle Interactions #Quantum chromodynamics #Recoil #Resummation #Standard Model (mathematical formulation) #hep-ex #hep-ph

paper · pdf · doi:10.1007/jhep12(2015)047

Comments and references added, additional quantitative information included in some figures, results unchanged, version to appear on JHEP

openalex publication_date 2015/12/01 · arxiv created 2015/12/06 · arxiv updated 2016/01/27 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/06

Abstract

We consider the transverse-momentum (q T ) distribution of Drell-Yan lepton pairs produced, via W and Z/γ * decay, in hadronic collisions. At small values of q T , we resum the logarithmically-enhanced perturbative QCD contributions up to next-to-next-to-leading logarithmic accuracy. Resummed results are consistently combined with the known O(αS2) fixed-order results at intermediate and large values of q T . Our calculation includes the leptonic decay of the vector boson with the corresponding spin correlations, the finite-width effects and the full dependence on the final-state lepton(s) kinematics. The computation is encoded in the numerical program DYRes, which allows the user to apply arbitrary kinematical cuts on the final-state leptons and to compute the corresponding distributions in the form of bin histograms. We present a comparison of our results with some of the available LHC data. The inclusion of the leptonic decay in the resummed calculation requires a theoretical discussion on the q T recoil due to the transverse momentum of the produced vector boson. We present a q T recoil procedure that is directly applicable to q T resummed calculations for generic production processes of high-mass systems in hadron collisions.

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