Speaker
Alessandro Bacchetta
(University of Pavia and INFN Pavia)
Description
I will describe recent efforts to extract Transverse Momentum Distributions (TMDs) from measurements in semi-inclusive DIS, Drell-Yan processes, and Z boson production. These efforts can be considered as the first attempt at a global fit of unpolarized TMDs. The results are encouraging, but several open challenges remain to be addressed and more experimental information is needed to improve the extractions.