Seminarium Teorii Oddziaływań Elementarnych

The relevance of two-photon exchange (TPE) correction to the elastic ep scattering will be discussed and estimated using two different methods. In the first the TPE is predicted within a rather simple hadronic model, in the other it is obtained directly from data by applying the Bayesian neural network approach. I will also discuss the relevance of the two-boson exchange effect in the charged current neutrino-nucleon interaction.