2006/03/31 by Stefano Moretti, S. Moretti, M. R. Nolten +3 · 3 citations
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph
paper · pdf · doi:10.1016/j.physletb.2006.06.078
published as Phys.Lett.B639:513-519,2006; Erratum-ibid.B660:607-609,2008 · 12 pages, 4 figures, LaTeX, one figure corrected, some text changes, conclusions unchanged, version to appear in PLB, Erratum added
openalex publication_date 2006/07/13 · arxiv created 2007/11/08 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/03
We calculate purely weak virtual one-loop corrections to the production cross section of top–antitop pairs at the Large Hadron Collider via the gluon–gluon fusion subprocess. We find very small negative corrections to the total cross section, of order − 0.6 % , but significantly larger effects to the differential one, particularly in the transverse momentum distribution, of order − 5 % to − 10 % (in observable regions). In case of parity-conserving spin-asymmetries of the final state, α S 2 α W corrections are typically of a few negative percent, with the exception of positive and negative peaks at + 12 % and − 5 % , respectively (near where the tree-level predictions change sign), while those arising in parity-violating asymmetries (which are identically zero in QCD) are typically at a level of a few permille.