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arXiv · 1511.05409

Analytic form of the two-loop planar five-gluon all-plus-helicity amplitude in QCD

T. Gehrmann·J. M. Henn·N. A. Lo Presti
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Abstract

Virtual two-loop corrections to scattering amplitudes are a key ingredient to precision physics at collider experiments. We compute the full set of planar master integrals relevant to five-point functions in massless QCD, and use these to derive an analytical expression for the two-loop five-gluon all-plus-helicity amplitude. After subtracting terms that are related to the universal infrared and ultraviolet pole structure, we obtain a remarkably simple and compact finite remainder function, consisting only of dilogarithms.

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T. Gehrmann, J. M. Henn, N. A. Lo Presti. 2016-04-15. Analytic form of the two-loop planar five-gluon all-plus-helicity amplitude in QCD. https://doi.org/10.1103/physrevlett.116.062001

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