# Isolated photon and photon+jet production at NNLO QCD accuracy and the ratio Rγ13/8

Chen, X; Gehrmann, T; Glover, Nigel; Höfer, M; Huss, Alexander (2019). Isolated photon and photon+jet production at NNLO QCD accuracy and the ratio Rγ13/8. arXiv.org 1905.08577, University of Zurich.

## Abstract

We discuss different approaches to photon isolation in fixed-order calculations and present anew next-to-next-to-leading order (NNLO) QCD calculation ofRγ13/8, the ratio of the inclusiveisolated photon cross section at 8 TeV and 13 TeV, differential in the photon transversemomentum, which was recently measured by the ATLAS collaboration.

## Abstract

We discuss different approaches to photon isolation in fixed-order calculations and present anew next-to-next-to-leading order (NNLO) QCD calculation ofRγ13/8, the ratio of the inclusiveisolated photon cross section at 8 TeV and 13 TeV, differential in the photon transversemomentum, which was recently measured by the ATLAS collaboration.