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Electroweak Radiative Corrections to Neutral-Current Drell-Yan Processes at Hadron Colliders

U. Baur·O. Brein·W. Hollik·C. Schappacher·D. Wackeroth
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Abstract

We calculate the complete electroweak O(alpha) corrections to pp, pbar p -> l+l- X (l=e, mu) in the Standard Model of electroweak interactions. They comprise weak and photonic virtual one-loop corrections as well as real photon radiation to the parton-level processes q bar q -> gamma,Z -> l+l-. We study in detail the effect of the radiative corrections on the l+l- invariant mass distribution, the cross section in the Z boson resonance region, and on the forward-backward asymmetry, A_FB, at the Fermilab Tevatron and the CERN Large Hadron Collider. The weak corrections are found to increase the Z boson cross section by about 1%, but have little effect on the forward-backward asymmetry in the Z peak region. Threshold effects of the W box diagrams lead to pronounced effects in A_FB at m(l+l-) approx 160 GeV which, however, will be difficult to observe experimentally. At high di-lepton invariant masses, the non-factorizable weak corrections are found to become large.

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U. Baur, O. Brein, W. Hollik, C. Schappacher, D. Wackeroth. 2001-08-31. Electroweak Radiative Corrections to Neutral-Current Drell-Yan Processes at Hadron Colliders. https://doi.org/10.1103/physrevd.65.033007

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