Analysis of vector boson production within TMD factorization

Understand

We present a comprehensive analysis and extraction of the unpolarized transverse momentum dependent (TMD) parton distribution functions, which are fundamental constituents of the TMD factorization theorem.

• We provide a general review of the theory of TMD distributions, and present a new scheme of scale fixation.
• This scheme, called the $\zeta$-prescription, allows to minimize the impact of perturbative logarithms in the large range of scales and does not generate undesired power corrections.
• Within $\zeta$-prescription we consistently include the perturbatively calculable parts up to next-to-next-to-leading order (NNLO), and perform the global fit of the Drell-Yan and Z-boson production, which include the data of E288, Tevatron and LHC experiments.