The Drell-Yan process as a testing ground for parton distributions up to LHC
Eduardo Basso, Claude Bourrely, Roman Pasechnik, Jacques Soffer
TL;DR
This paper discusses how Drell-Yan dilepton production in hadron collisions can test and improve parton distribution functions across a wide energy range, from Tevatron to LHC.
Contribution
It compares experimental Drell-Yan cross section measurements with various perturbative QCD predictions and parton distribution sets, highlighting their effectiveness in probing hadronic structure.
Findings
Agreement between measurements and predictions varies with energy and PDF set.
Statistical approach PDFs show different compatibility compared to traditional sets.
Data constrains parton distributions at high energies.
Abstract
The Drell-Yan massive dilepton production in hadron-hadron collisions provides a unique tool, complementary to Deep Inelastic Scattering, for improving our understanding of hadronic substructure and in particular for testing parton distributions. We will consider measurements of the differential and double-differential Drell-Yan cross sections from FNAL Tevatron up to CERN LHC energies and they will be compared to the predictions of perturbative QCD calculations using most recent sets (CT14 and MMHT14) of parton distribution functions, as well as those provided by the statistical approach.
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