Speaker
Description
McMule (Monte Carlo for Muons and other Leptons) is a powerful tool for fully differential higher-order QED calculations of scattering and decay processes involving leptons. It provides various types of observables, such as cross-sections and branching ratios.
In this work we show, with McMule, the importance of the radiative corrections up to and including next-to-next-to leading order (NNLO) QED corrections to elastic lepton-proton scattering. One important contribution at NLO is the two-photon-exchange (TPE), which is the main focus of this work. We present results and outlooks for both elastic and inelastic TPE, including the associated uncertainties, and compare their size to the subleading NNLO corrections. Finally, we compare theoretical McMule predictions and old experimental data from electron-proton scattering experiments conducted in Mainz by the A1 Collaboration.
