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Two-Loop Five-Parton Leading-Colour Finite Remainders in the Spinor-Helicity Formalism

De Laurentis, Giuseppe; Maître, Daniel

Two-Loop Five-Parton Leading-Colour Finite Remainders in the Spinor-Helicity Formalism Thumbnail


Authors

Giuseppe De Laurentis



Abstract

We present all two-loop five-parton leading-colour finite remainders in the spinor-helicity formalism by analysing numerical evaluations of their known expressions in terms of Mandelstam invariants. Recasting them in terms of spinor-helicity variables allows us to obtain expressions which are more compact, faster to evaluate, numerically more stable and manifestly free from poles of higher order than necessary. At the same time, due to the better scaling of our reconstruction strategy with the complexity of the input, we required one order of magnitude fewer numerical samples to complete the analytical reconstruction than were needed by the authors of ref. [1], albeit using higher numerical working precision. This places our reconstruction technique as an alternative to the finite-field single-numerator reconstruction for future applications.

Citation

De Laurentis, G., & Maître, D. (2021). Two-Loop Five-Parton Leading-Colour Finite Remainders in the Spinor-Helicity Formalism. Journal of High Energy Physics, 2021(1), Article 16. https://doi.org/10.1007/jhep02%282021%29016

Journal Article Type Article
Acceptance Date Dec 21, 2020
Online Publication Date Feb 2, 2021
Publication Date 2021
Deposit Date Jan 7, 2021
Publicly Available Date Apr 12, 2021
Journal Journal of High Energy Physics
Print ISSN 1126-6708
Publisher Scuola Internazionale Superiore di Studi Avanzati (SISSA)
Peer Reviewed Peer Reviewed
Volume 2021
Issue 1
Article Number 16
DOI https://doi.org/10.1007/jhep02%282021%29016
Related Public URLs https://arxiv.org/abs/2010.14525

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Publisher Licence URL
http://creativecommons.org/licenses/by/4.0/

Copyright Statement
This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited.





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