NNLO Photon Production with Realistic Photon Isolation
Abstract
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.
Cite
@article{arxiv.2208.02669,
title = {NNLO Photon Production with Realistic Photon Isolation},
author = {X. Chen and T. Gehrmann and E. W. N. Glover and M. Höfer and A. Huss and R. Schürmann},
journal= {arXiv preprint arXiv:2208.02669},
year = {2022}
}
Comments
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"