q_T Uncertainties for W and Z Production

Details q_T Uncertainties for W and Z Production q_T Uncertainties for W and Z Production

2005-08-22

arxiv.org/abs/hep-ph/0508215v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages, 2 figures; contribution to the XIII International Workshop on Deep Inelastic Scattering (DIS 2005)

Scientific paper

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.

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