Resummation for W and Z production at large p{T}.
Soft-collinear effective theory is used to perform threshold resummation for W and Z production at large transverse momentum to next-to-next-to-leading logarithmic accuracy including matching to next-to-leading fixed-order results. The results agree very well with data from the Tevatron, and predictions are made for the high-p{T} spectra at the LHC. While the higher-log terms are of moderate size, their inclusion leads to a substantial reduction of the perturbative uncertainty. With these improvements, the parton distribution function uncertainties now dominate the error on the predicted cross section.
Institut für Theoretische Physik, Universität Bern, Sidlerstrasse 5, CH-3012 Bern, Switzerland.
Thomas
T
Becher
Christian
C
Lorentzen
Matthew D
MD
Schwartz