Speaker
Alessandro Bacchetta
(University of Pavia)
Description
The determination of quark angular momentum requires the knowledge of the generalized parton distribution E in the forward limit. We assume a connection between this function and the Sivers transverse-momentum distribution, based on model calculations and theoretical considerations. Using this assumption, we show that it is possible to fit at the same time nucleon magnetic moments and semi-inclusive single-spin asymmetries. This imposes additional constraints on the Sivers function and opens a plausible way to quantifying quark angular momentum.
Primary author
Alessandro Bacchetta
(University of Pavia)
Co-author
Marco Radici
(INFN)
