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arXiv · hep-ph/0703283

Electroweak corrections to large transverse momentum production of W bosons at the LHC

Johann H. Kuhn·A. Kulesza·S. Pozzorini·M. Schulze
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Abstract

To match the precision of present and future measurements of W-boson production at hadron colliders, electroweak radiative corrections must be included in the theory predictions. In this paper we consider their effect on the transverse momentum (p_T) distribution of W bosons, with emphasis on large p_T. We evaluate the full electroweak O(α) corrections to the process pp -> Wj including virtual and real photonic contributions. We also provide compact approximate expressions which are valid in the high-energy region, where the electroweak corrections are strongly enhanced by logarithms of \hat{s}/M_W^2. These expressions include quadratic and single logarithms at one loop as well as quartic and triple logarithms at two loops. Numerical results are presented for proton-proton collisions at 14 TeV. The corrections are negative and their size increases with p_T. At the LHC, where transverse momenta of 2 TeV or more can be reached, the one- and two-loop corrections amount up to -40% and +10%, respectively.

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Johann H. Kuhn, A. Kulesza, S. Pozzorini, M. Schulze. 2007-03-27. Electroweak corrections to large transverse momentum production of W bosons at the LHC. https://doi.org/10.1016/j.physletb.2007.06.028

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