Speaker
Andrei Afanasev
Description
We analyze an impact of QED corrections on observables of semi-inclusive deep-inelastic scattering (SIDIS) of electrons and muons on a proton target. It is shown that both the radiative effects and two-photon exchange generate new azimuthal dependent-terms and corresponding 𝑐𝑜𝑠(𝑛𝜙) moments. A quark-diquark model of a nucleon was used in the calculations of two-photon effects which appear to be essential for both the magnitude and transverse-momentum dependence of 𝑐𝑜𝑠(𝜙) and 𝑐𝑜𝑠(2𝜙) moments.
