Sudakov logarithm resummation for vector boson production at hadron colliders

A complete description of W and Z boson production at high-energy colliders requires the resummation of large Sudakov logarithms which dominate the pr oduction at small transverse momentum. Currently there are two techniques f or performing this resummation: impact parameter space and transverse momen tum space. We argue that the latter can be formulated in a way which retain s the advantages of the former, while at the same time allowing a smooth tr ansition to finite-order dominance at high transverse momentum.