NNLO QCD corrections to diphoton production with an additional jet at the LHC

Understand

We calculate the NNLO QCD corrections to diphoton production with an additional jet at the LHC.

• Our calculation represents the first NNLO-accurate prediction for the transverse momentum distribution of the diphoton system.
• The improvement in the accuracy of the theoretical prediction is significant, by a factor of up to four relative to NLO QCD.
• Our calculation is exact except for the finite remainder of the two-loop amplitude which is included at leading color.