ABSTRACT:
I will discuss applications of perturbative QCD to the study of inclusive processes that are sensitive to the intrinsic transverse motion of bound state constituents of hadrons. Transverse momentum dependent (TMD) factorization is the theoretical framework that is needed to address these processes in perturbation theory.
Factorization refers to the separation of short-distance (hard) physics, which is calculable in perturbative QCD, from the large-distance non-perturbative effects inside the transverse momentum dependent parton distribution and fragmentation functions.
I will summarize recent theoretical developments in TMD-factorization, and discuss current efforts to apply TMD-factorization phenomenologically to extract information about hadron structure. |