q_T Uncertainties for W and Z Production
arXiv:hep-ph/0508215 · doi:10.1063/1.2122139
Abstract
Analysis of semi-inclusive DIS hadroproduction suggests broadening of transverse momentum distributions at small x below 1E-3 ~ 1E-2 which can be modeled in the Collins-Soper-Sterman formalism by a modification of impact parameter dependent parton densities. We investigate these consequences for the production of electroweak bosons at the Tevatron and the LHC. If substantial small-x broadening is observed in forward Z boson production in the Tevatron Run-2, it will strongly affect the predicted q_T distributions for W and Z boson production at the LHC.
4 pages, 2 figures; contribution to the XIII International Workshop on Deep Inelastic Scattering (DIS 2005)