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Cyclic Mario worlds - color-decomposition for one-loop QCD
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Theoretical Physics.ORCID iD: 0000-0002-6697-775x
2018 (English)In: Journal of High Energy Physics (JHEP), ISSN 1126-6708, E-ISSN 1029-8479, no 4, article id 141Article in journal (Refereed) Published
Abstract [en]

We present a new color decomposition for QCD amplitudes at one-loop level as a generalization of the Del Duca-Dixon-Maltoni and Johansson-Ochirov decomposition at tree level. Starting from a minimal basis of planar primitive amplitudes we write down a color decomposition that is free of linear dependencies among appearing primitive amplitudes or color factors. The conjectured decomposition applies to any number of quark flavors and is independent of the choice of gauge group and matter representation. The results also hold for higher-dimensional or supersymmetric extensions of QCD. We provide expressions for any number of external quark-antiquark pairs and gluons. [GRAPHICS] .

Place, publisher, year, edition, pages
2018. no 4, article id 141
Keywords [en]
Perturbative QCD, Scattering Amplitudes, Gauge Symmetry
National Category
Subatomic Physics
Identifiers
URN: urn:nbn:se:uu:diva-355467DOI: 10.1007/JHEP04(2018)141ISI: 000432044000001OAI: oai:DiVA.org:uu-355467DiVA, id: diva2:1229275
Funder
Swedish Research Council, 621-2014-5722Knut and Alice Wallenberg Foundation, KAW 2013.0235Available from: 2018-06-29 Created: 2018-06-29 Last updated: 2018-06-29Bibliographically approved

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