An $n$-point QCD two-loop amplitude

Abstract

We present an explicit expression for a particular $n$-gluon two loop scattering partial amplitude. Specifically we present an analytic form for the single trace $N_c$ independent colour partial amplitude for the case where all external gluons have positive helicity.

v3 : clarification of eq 7.2, citations updated. arXiv admin note: text overlap with arXiv:1911.06547

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• The dimension-shift conjecture for one-loop amplitudes
• Virtual QCD corrections to gluon-initiated diphoton plus jet production at hadron colliders
• Two-loop all-plus helicity amplitudes for self-dual Higgs boson with gluons via unitarity cut constraints
• Symmetric reduction of high-multiplicity one-loop integrals and maximal cuts