Simon Badger
Two-loop leading colour helicity amplitudes for W±γ + j production at the LHC
Badger, Simon; Hartanto, Heribertus Bayu; Kryś, Jakub; Zoia, Simone
Authors
Heribertus Bayu Hartanto
Jakub Krys jakub.m.krys@durham.ac.uk
PGR Student Doctor of Philosophy
Simone Zoia
Abstract
We present the two-loop leading colour QCD helicity amplitudes for the process pp → W (→ lν)γ + j. We implement a complete reduction of the amplitudes, including the leptonic decay of the W-boson, using finite field arithmetic, and extract the analytic finite remainders using a recently identified basis of special functions. Simplified analytic expressions are obtained after considering permutations of a rational kinematic parametrisation and multivariate partial fractioning. We demonstrate efficient numerical evaluation of the two-loop colour and helicity summed finite remainders for physical kinematics, and hence the suitability for phenomenological applications.
Citation
Badger, S., Hartanto, H. B., Kryś, J., & Zoia, S. (2022). Two-loop leading colour helicity amplitudes for W±γ + j production at the LHC. Journal of High Energy Physics, 2022(5), Article 35. https://doi.org/10.1007/jhep05%282022%29035
Journal Article Type | Article |
---|---|
Acceptance Date | Apr 14, 2022 |
Online Publication Date | May 5, 2022 |
Publication Date | 2022-05 |
Deposit Date | Jul 5, 2022 |
Publicly Available Date | Jul 5, 2022 |
Journal | Journal of High Energy Physics |
Print ISSN | 1126-6708 |
Publisher | Scuola Internazionale Superiore di Studi Avanzati (SISSA) |
Peer Reviewed | Peer Reviewed |
Volume | 2022 |
Issue | 5 |
Article Number | 35 |
DOI | https://doi.org/10.1007/jhep05%282022%29035 |
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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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