Measurement of prompt photon production and W/Z boson production in association with jets at ATLAS

Measurement of prompt photon production and W/Z boson production in association with jets at ATLAS The production of prompt isolated photons and W/Z-boson in association with jets are an important test of perturbative QCD prediction and also yield information about the parton distribution functions of the proton. In this talk, we present the latest measurements of prompt photon production using proton-proton collision data collected by the ATLAS experiment at √s=13 TeV. This includes the differential cross-section measurements of isolated di-photon production. We also present a measurement that probes the event topologies of prompt isolated photons produced in association with two hadronic jets. Latest results of differential cross-sections measurements for Z-boson production in association jets will be also presented including association with heavy flavour. Each measurement is corrected for detector inefficiency and resolution and the results are compared to state-of-the-art theory predictions, indicating several interesting discrepancies. If available, studies on the modelling of various processes in the state-of-art MC generators and fixed-order predictions will be presented.