Laurentis, Giuseppe De and Maitre, Daniel (2019) 'Extracting analytical one-loop amplitudes from numerical evaluations.', Journal of high energy physics., 7 . p. 123.
In this article we present a method to generate analytic expressions for the integral coefficients of loop amplitudes using numerical evaluations only. We use highprecision arithmetics to explore the singularity structure of the coefficients and decompose them into parts of manageable complexity. To illustrate the usability of our method we provide analytical expressions for all helicity configurations of the colour-ordered six-point gluon amplitudes at one loop with a gluon in the loop.
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|Publisher Web site:||https://doi.org/10.1007/JHEP07(2019)123|
|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:||30 June 2019|
|Date deposited:||01 August 2019|
|Date of first online publication:||22 July 2019|
|Date first made open access:||No date available|
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