We present a compact analytic expression for the leading colour two-loop five-gluon amplitude in Yang-Mills theory with a single negative helicity and four positive helicities. The analytic result is reconstructed from numerical evaluations over finite fields. The numerical method combines integrand reduction, integration-by-parts identities and Laurent expansion into a basis of pentagon functions to compute the coefficients directly from six-dimensional generalised unitarity cuts.

Analytic helicity amplitudes for two-loop five-gluon scattering: the single-minus case

Badger S.;
2019

Abstract

We present a compact analytic expression for the leading colour two-loop five-gluon amplitude in Yang-Mills theory with a single negative helicity and four positive helicities. The analytic result is reconstructed from numerical evaluations over finite fields. The numerical method combines integrand reduction, integration-by-parts identities and Laurent expansion into a basis of pentagon functions to compute the coefficients directly from six-dimensional generalised unitarity cuts.
JOURNAL OF HIGH ENERGY PHYSICS
2019
1
N/A
N/A
http://arxiv.org/abs/1811.11699v1
Perturbative QCD; Scattering Amplitudes; High Energy Physics - Phenomenology; High Energy Physics - Phenomenology; High Energy Physics - Theory
Badger S.; Bronnum-Hansen C.; Hartanto H.B.; Peraro T.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/2318/1770897
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