First Look at Two-Loop Five-Gluon Scattering in QCD

First Look at Two-Loop Five-Gluon Scattering in QCD

We compute the leading-color contributions to five-gluon scattering at two loops in massless QCD. The integrands of all independent helicity amplitudes are evaluated using d-dimensional generalized unitarity cuts and finite field reconstruction techniques. Numerical evaluation of the integral basis...

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Veröffentlicht in:Physical review letters 2018-03, Vol.120 (9), p.092001-092001, Article 092001
Hauptverfasser: Badger, Simon, Brønnum-Hansen, Christian, Hartanto, Heribertus Bayu, Peraro, Tiziano
Format: Artikel
Sprache:eng
Schlagworte:
Helicity
Quantum chromodynamics
Scattering
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Zusammenfassung:We compute the leading-color contributions to five-gluon scattering at two loops in massless QCD. The integrands of all independent helicity amplitudes are evaluated using d-dimensional generalized 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→3 scattering process in QCD.
ISSN:0031-9007
1079-7114
DOI:10.1103/physrevlett.120.092001