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arXiv · 2409.08146

Two-loop amplitudes for $\mathcal{O}(\alpha_s^2)$ corrections to $W\gamma\gamma$ production at the LHC

Simon Badger·Heribertus Bayu Hartanto·Zihao Wu·Yang Zhang·Simone Zoia
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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.

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Simon Badger, Heribertus Bayu Hartanto, Zihao Wu, Yang Zhang, Simone Zoia. 2024-09-12. Two-loop amplitudes for $\mathcal{O}(\alpha_s^2)$ corrections to $W\gamma\gamma$ production at the LHC. https://arxiv.org/abs/2409.08146

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