Isolated photon production at hadron colliders proceeds via direct production
and fragmentation processes. Theory predictions for the isolated photon and
photon-plus-jet cross section often impose idealised photon isolation criteria,
eliminating the fragmentation contribution and introducing a systematic
uncertainty in the comparison to data. We present NNLO predictions for the
photon-plus-jet cross section with the experimental isolation including both,
direct and fragmentation contributions. Predictions with two different
parton-to-photon fragmentation functions are compared, allowing for an
estimation of the uncertainty stemming from the only loosely constrained photon
fragmentation functions.Comment: 11 pages, 2 figures, one table, contribution to the proceedings of
"Loops and Legs in Quantum Field Theory - LL2022, 25-30 April, 2022, Ettal,
Germany
