Twist expansion of differential cross-sections of forward Drell-Yan process
arXiv:1412.2289 · doi:10.1063/1.4916002
Abstract
Forward Drell-Yan process at the LHC is a sensitive tool for investigating higher twist effects in QCD. The expansion of all Drell-Yan structure functions is performed assuming GBW saturation model and the saturation scale plays the role of the hadronic scale of OPE. We show that the Lam-Tung relation is broken at twist 4. The results open the way for a forthcoming analysis of multiple scattering and higher twist effects.
4 pages, 2 figures, talk presented at the International Workshop on Diffraction in High-Energy Physics Primosten (Croatia), September 10 - 16, 2014