Cookies

We use cookies to ensure that we give you the best experience on our website. By continuing to browse this repository, you give consent for essential cookies to be used. You can read more about our Privacy and Cookie Policy.


Durham Research Online
You are in:

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

De Laurentis, Giuseppe and Maître, Daniel (2021) 'Two-Loop Five-Parton Leading-Colour Finite Remainders in the Spinor-Helicity Formalism.', Journal of high energy physics., 2021 (1).

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.

Item Type:Article
Full text:(VoR) Version of Record
Available under License - Creative Commons Attribution 4.0.
Download PDF
(668Kb)
Status:Peer-reviewed
Publisher Web site:https://doi.org/10.1007/JHEP02(2021)016
Publisher 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.
Date accepted:21 December 2020
Date deposited:12 April 2021
Date of first online publication:02 February 2021
Date first made open access:12 April 2021

Save or Share this output

Export:
Export
Look up in GoogleScholar