Abstract
The distribution of W and Z bosons produced with small transverse momentum ( $p_{\rm T}$ ) at hadron colliders receives important contributions from large logarithms arising from soft gluon emission. Although conventionally the all-orders resummation of these ‘Sudakov’ logarithms is performed in impact parameter (Fourier transform) space, $p_{\rm T}$ -space resummation is also possible, and offers certain advantages. We present a detailed phenomenological analysis of W and Z production at small $p_{\rm T}$ at the Tevatron $p \bar p$ collider, using $p_{\rm T}$ -space resummation. A good description of the CDF and D0 data can be obtained provided a significant non-perturbative contribution is included. We also present predictions for the LHC.
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