https://arxiv.org/abs/1204.1411
[1204.1411] Measurement of the underlying event in the Drell-Yan process in proton-proton...
Abstract page for arXiv paper 1204.1411: Measurement of the underlying event in the Drell-Yan process in proton-proton collisions at sqrt(s) = 7 TeV
drell yan processof theunderlying event
https://arxiv.org/abs/hep-ph/0211110
[hep-ph/0211110] Initial-State Interactions in the Unpolarized Drell-Yan Process
Abstract page for arXiv paper hep-ph/0211110: Initial-State Interactions in the Unpolarized Drell-Yan Process
hep phinitial state