Two-loop leading colour QCD corrections to qq¯ → γγg and qg → γγq

Bakul Agarwal, Federico Buccioni, Andreas von Manteuffel, Lorenzo Tancredi

Research output: Contribution to journalArticlepeer-review

39 Scopus citations

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.

Original languageEnglish
Article number201
JournalJournal of High Energy Physics
Volume2021
Issue number4
DOIs
StatePublished - Apr 2021
Externally publishedYes

Keywords

  • NLO Computations
  • QCD Phenomenology

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