2006/08/31 by J. G. Körner, J. G. Korner, Z. Merebashvili +1
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph
paper · pdf · doi:10.1103/physrevd.74.094006
published as Phys.Rev.D74:094006,2006 · 11 pages, Revtex, slight change in title and abstract, one paragraph and reference added, matches published version
openalex publication_date 2006/11/03 · arxiv created 2006/11/04 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
We calculate the one-loop squared contributions to the next-to-next-to-leading order O(\ensuremathα2\ensuremathαs2) radiative QCD corrections for the production of heavy quark pairs in the collisions of unpolarized on-shell photons. In particular, we present analytical results for the squared matrix elements that correspond to the product of the one-loop amplitudes. All results of the perturbative calculation are given in the dimensional regularization scheme. These results represent the Abelian part of the corresponding gluon-induced next-to-next-to-leading order cross section for heavy quark pair hadroproduction.