Differential cross section measurements in $H \to \gamma\gamma$ with the ATLAS detector at the LHC

This work presents differential cross section measurements of the Higgs boson, performed in the diphoton decay channel. The dataset used corresponds to $20.3\text{~fb}^{−1}$ of proton-proton collisions at $\sqrt{s} = 8$ TeV, produced by the LHC and collected by the ATLAS detector in 2012. With its high signal selection efficiency the diphoton decay channel is well suited to probe the underlying kinematic properties of the signal production and decay. Measurements are made within the geometric acceptance of the detector, for observables of the two photons from the Higgs boson decay, and for jets produced in association with it. These measurements are corrected for experimental acceptance and resolution. Results are compared to theoretical predictions at the particle level.