Heribertus Bayu Hartanto
A numerical evaluation of planar two-loop helicity amplitudes for a W-boson plus four partons
Hartanto, Heribertus Bayu; Badger, Simon; Brønnum-Hansen, Christian; Peraro, Tiziano
Authors
Dr Simon Badger simon.d.badger@durham.ac.uk
Visiting Professor
Christian Brønnum-Hansen
Tiziano Peraro
Abstract
We present the first numerical results for the two-loop helicity amplitudes for the scattering of four partons and a W-boson in QCD. We use a finite field sampling method to reduce directly from Feynman diagrams to the coefficients of a set of master integrals after applying integration-by-parts identities. Since the basis of master integrals is not yet fully known analytically, we identify a set of master integrals with a simple divergence structure using local numerator insertions. This allows for accurate numerical evaluation of the amplitude using sector decomposition methods.
Citation
Hartanto, H. B., Badger, S., Brønnum-Hansen, C., & Peraro, T. (2019). A numerical evaluation of planar two-loop helicity amplitudes for a W-boson plus four partons. Journal of High Energy Physics, 2019(9), Article 119. https://doi.org/10.1007/jhep09%282019%29119
Journal Article Type | Article |
---|---|
Acceptance Date | Aug 29, 2019 |
Online Publication Date | Sep 16, 2019 |
Publication Date | Sep 30, 2019 |
Deposit Date | Oct 11, 2019 |
Publicly Available Date | Oct 31, 2019 |
Journal | Journal of High Energy Physics |
Print ISSN | 1126-6708 |
Publisher | Scuola Internazionale Superiore di Studi Avanzati (SISSA) |
Peer Reviewed | Peer Reviewed |
Volume | 2019 |
Issue | 9 |
Article Number | 119 |
DOI | https://doi.org/10.1007/jhep09%282019%29119 |
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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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