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arXiv · 1712.02229

A first look at two-loop five-gluon scattering in QCD

Simon Badger·Christian Brønnum-Hansen·Heribertus Bayu Hartanto·Tiziano Peraro
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Abstract

We compute the leading colour contributions to five-gluon scattering at two loops in massless QCD. The integrands of all independent helicity amplitudes are evaluated using d-dimensional generalised unitarity cuts and finite field reconstruction techniques. Numerical evaluation of the integral basis is performed with sector decomposition methods to obtain the first benchmark results for all helicity configurations of a 2 to 3 scattering process in QCD.

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Simon Badger, Christian Brønnum-Hansen, Heribertus Bayu Hartanto, Tiziano Peraro. 2017-12-06. A first look at two-loop five-gluon scattering in QCD. https://doi.org/10.1103/physrevlett.120.092001

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