The one-loop gluon amplitude for heavy-quark production at NNLO

Abstract

We compute the one-loop QCD amplitude for the process gg → QQ̄ in dimensional regularization through order ǫ2 in the dimensional regulator and for arbitrary quark mass values. This result is an ingredient of the NNLO cross-section for heavy quark production at hadron colliders. The calculation is performed in conventional dimensional regularization, using well known reduction techniques as well as a method based on recent ideas for the functional form of one-loop integrands in four dimensions.

Topics

    3 Figures and Tables

    Download Full PDF Version (Non-Commercial Use)