Two-loop amplitudes for O α s 2 $$ \mathcal{O}\left({\alpha}_s^2\right) $$ corrections to Wγγ production at the LHC

Two-loop amplitudes for O α s 2 $$ \mathcal{O}\left({\alpha}_s^2\right) $$ corrections to Wγγ production at the LHC

Abstract We present the two-loop helicity amplitudes contributing to the next-to-next-to-leading order QCD predictions for W-boson production in association with two photons at the Large Hadron Collider. We derived compact analytic expressions for the two-loop amplitudes in the leading colour limit,...

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Bibliographic Details
Main Authors: Simon Badger, Heribertus Bayu Hartanto, Zihao Wu, Yang Zhang, Simone Zoia
Format: Article
Language:English
Published: SpringerOpen 2024-12-01
Series:Journal of High Energy Physics
Subjects:
Electroweak Precision Physics
Higher-Order Perturbative Calculations
Scattering Amplitudes
Online Access:https://doi.org/10.1007/JHEP12(2024)221
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Summary:Abstract We present the two-loop helicity amplitudes contributing to the next-to-next-to-leading order QCD predictions for W-boson production in association with two photons at the Large Hadron Collider. We derived compact analytic expressions for the two-loop amplitudes in the leading colour limit, and provide numerical results for the subleading colour contributions. We employ a compact system of integration-by-part identities provided by the NeatIBP package, allowing for an efficient computation of the rational coefficients of the scattering amplitudes over finite fields.
ISSN:1029-8479

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