Analysis of inclusive differential cross sections of prompt isolated photon production in proton–proton collisions at the ATLAS detector

The aim of this work is to study inclusive differential spectra of prompt isolated photon production in proton–proton collisions measured with the ATLAS detector at center-of-mass energies of 8 and 13 TeV.The analysis is based on published ATLAS experimental data available in the HEPData repository and processed using the ROOT software framework. The differential cross-section spectra are approximated by a power-law function, and the corresponding fit parameters are presented. A comparative analysis of associated production of prompt photons and Z bosons with hadronic jets (γ + jets and Z + jets) at a center-of-mass energy of 13 TeV is performed. The obtained values of the power-law exponents and the ratio of differential cross sections for Z bosons and prompt photons at high transverse momenta are in agreement with the predictions of quantum chromodynamics and the Standard Model of electroweak interactions.