Speaker
Description
In this talk, I will present the details of a new factorized approach to inclusive lepton-hadron scattering, in particular to semi-inclusive deep-inelastic scattering, which treats QED and QCD radiation on equal footing, and provides a systematically improvable approximation to the extraction of transverse momentum dependent parton distributions. We demonstrate how the QED contributions can be well approximated by collinear factorization, and systematically included to all orders. For semi-inclusive processes, we show how radiation effects prevent a well-defined ``photon-nucleon'' frame, forcing one to use a two-step process to account for the radiation. We illustrate the utility of the new method by explicit application to the spin-dependent Sivers and Collins asymmetries at the future EIC.
