Nonperturbative contributions to a resummed leptonic angular distribution in inclusive Z/γ^* boson production

2012/01/01 by Marco Guzzi, Pavel Nadolsky, Pavel M. Nadolsky · 1 citation
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph

paper · pdf · doi:10.1142/s2010194512009324

8 pages, 3 figures. Presented at conference: "The QCD Evolution Workshop", May 14-17 2012, Thomas Jefferson National Accelerator Facility, Newport News, VA

openalex publication_date 2012/01/01 · arxiv created 2013/09/05 · arxiv updated 2015/06/11 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/29

Abstract

We summarize a new analysis of the distribution ϕ_η^* of charged leptons produced in decays of Z and γ^* bosons in the Collins-Soper-Sterman (CSS) formalism for transverse momentum resummation. By comparing the ϕ_η^* distribution measured at the Tevatron with the resummed CSS cross section with approximate \cal O(α_s²) Wilson coefficients, we constrain the magnitude of the nonperturbative Gaussian smearing factor and analyze its uncertainty caused by variations in scale parameters. We find excellent agreement between the ϕ_η^* data and our theoretical prediction, provided by the ResBos resummation program. The nonperturbative factor that we obtained can be used to update resummed QCD predictions for precision measurements in inclusive W and Z production and for comparisons to various models of nonperturbative dynamics.

Citations

• Electroweak radiative corrections to neutral-current Drell-Yan processes at hadron colliders
• Weak radiative corrections to the Drell-Yan process for large invariant mass of a dilepton pair
• Soft gluon effects on lepton pairs at hadron colliders

Cited by

• QCD EVOLUTION WORKSHOP: INTRODUCTION