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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Agarwal, B., Buccioni, F., von Manteuffel, A. et al. Two-loop leading colour QCD corrections to \( q\overline{q} \) → γγg and qg → γγq. J. High Energ. Phys. 2021, 201 (2021). https://doi.org/10.1007/JHEP04(2021)201
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DOI: https://doi.org/10.1007/JHEP04(2021)201