Photon isolation effects at NLO in gamma gamma + jet final states in hadronic collisions

TL;DR

This paper calculates next-to-leading order QCD corrections for diphoton plus jet production in hadronic collisions, including jet fragmentation and various photon isolation criteria, to improve theoretical predictions.

Contribution

It introduces a comprehensive NLO calculation that incorporates jet fragmentation and allows for arbitrary infrared-safe photon isolation definitions.

Findings

Different photon isolation criteria significantly affect the cross section.

The cross section's dependence on isolation parameters is quantitatively analyzed.

The results enhance the precision of diphoton plus jet predictions at colliders.

Abstract

We present the NLO QCD corrections to diphoton plus jet production at hadron colliders. Our calculation includes contributions from the fragmentation of a hadronic jet into a highly energetic photon, and consequently allows the implementation of arbitrary infrared-safe photon isolation definitions. We compare different photon isolation criteria and perform a detailed study of the dependence of the diphoton plus jet cross section on the photon isolation parameters.