Next-to-leading order QCD corrections to diphoton-plus-jet production through gluon fusion at the LHC

TL;DR

This paper calculates the NLO QCD corrections to gluon-fusion diphoton-plus-jet production at the LHC, highlighting the importance of these corrections for accurate theoretical predictions.

Contribution

It provides the first detailed NLO QCD calculation for the gluon-fusion subprocess in diphoton-plus-jet production, including differential distributions and infrared divergence cancellation.

Findings

Significant NLO corrections observed

Demonstrates necessity of combining with quark-induced channels at NNLO

Enhances precision of theoretical predictions for LHC processes

Abstract

We compute the next-to-leading order (NLO) QCD corrections to the gluon-fusion subprocess of diphoton-plus-jet production at the LHC. We compute fully differential distributions by combining two-loop virtual corrections with one-loop real radiation using antenna subtraction to cancel infrared divergences. We observe significant corrections at NLO which demonstrate the importance of combining these corrections with the quark-induced diphoton-plus-jet channel at next-to-next-to-leading order (NNLO).