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arXiv · 2102.01820

Two-loop leading colour QCD corrections to $q \bar{q} \to \gamma \gamma g$ and $q g \to \gamma \gamma q$

Bakul Agarwal·Federico Buccioni·Andreas von Manteuffel·Lorenzo Tancredi
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Abstract

We present the leading colour and light fermionic planar two-loop corrections for the production of two photons and a jet in the quark-antiquark and quark-gluon channels. In particular, we compute the interference of the two-loop amplitudes with the corresponding tree level ones, summed over colours and polarisations. Our calculation uses the latest advancements in the algorithms for integration-by-parts reduction and multivariate partial fraction decomposition to produce compact and easy-to-use results. We have implemented our results in an efficient C++ numerical code. We also provide their analytic expressions in Mathematica format.

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Bakul Agarwal, Federico Buccioni, Andreas von Manteuffel, Lorenzo Tancredi. 2021-02-03. Two-loop leading colour QCD corrections to $q \bar{q} \to \gamma \gamma g$ and $q g \to \gamma \gamma q$. https://doi.org/10.1007/jhep04(2021)201

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