https://doi.org/10.1140/epjs/s11734-025-02001-3
Regular Article
Building blocks of exponentiated colour factors
School of Physical Sciences, National Institute of Science Education and Research, An OCC of Homi Bhaba National Institute, 752050, Jatni, Odisha, India
a
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Received:
11
June
2025
Accepted:
29
September
2025
Published online:
28
October
2025
Abstract
Exponentiated colour factors (ECFs) are essential to study the soft anomalous dimension in perturbative QCD using Feynman diagrams known as webs. Traditionally, ECFs are obtained by acting the web mixing matrices to a column vector made out of the colour factors of the diagrams present in a web. In this paper, we propose a new method to obtain them using a simpler approach that uses the concepts developed in Agarwal et al. (JHEP 06:020, 2022, https://doi.org/10.1007/JHEP06(2022)020, arXiv:2204.05936 [hep-ph]). We provide an example to validate our method.
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© The Author(s), under exclusive licence to EDP Sciences, Springer-Verlag GmbH Germany, part of Springer Nature 2025
Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
