Drell-Yan lepton-pair production: q_T resummation at N³LL accuracy and fiducial cross sections at N³LO

2021/03/31 by Stefano Camarda, Leandro Cieri, Giancarlo Ferrera · 1 citation
Physics and Astronomy · #hep-ph #hep-ex

paper · pdf · doi:10.1103/physrevd.104.l111503

17 pages, 3 figures. Slightly expanded text, figure and references added, results unchanged. Version published on PRD

arxiv created 2022/01/11 · arxiv updated 2022/01/12

Abstract

We present high-accuracy QCD predictions for the transverse-momentum (q_T) distribution and fiducial cross sections of Drell-Yan lepton pairs produced in hadronic collisions. At small value of q_T we resum to all perturbative orders the logarithmically enhanced contributions up to next-to-next-to-next-to-leading logarithmic (N³LL) accuracy, including all the next-to-next-to-next-to-leading order (N³LO) (i.e. O(α_S³)) terms. Our resummed calculation has been implemented in the public numerical program DYTurbo, which produces fast and precise predictions with the full dependence on the final-state leptons kinematics. We consistently combine our resummed results with the known O(α_S³) fixed-order predictions at large values of q_T thus obtaining full N³LO accuracy also for fiducial cross sections. We show numerical results at LHC energies discussing the reduction of the perturbative uncertainty with respect to lower-order calculations.

Cited by

• The Drell-Yan Process at NNLL^′+NNLO using Rapidity Dependent Jet Vetoes