Electroweak Radiative Corrections to Neutral-Current Drell-Yan Processes at Hadron Colliders
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.
Keywords
Cite
@article{arxiv.hep-ph/0108274,
title = {Electroweak Radiative Corrections to Neutral-Current Drell-Yan Processes at Hadron Colliders},
author = {U. Baur and O. Brein and W. Hollik and C. Schappacher and D. Wackeroth},
journal= {arXiv preprint arXiv:hep-ph/0108274},
year = {2010}
}
Comments
Revtex3 file, 39 pages, 2 tables, 12 figures