TL;DR
This paper reviews the theoretical framework of TMD evolution, emphasizing factorization and nonperturbative effects, and summarizes recent results on TMD evolution applied to azimuthal asymmetries in high-energy scattering processes.
Contribution
It provides a comprehensive overview of TMD evolution and factorization, including treatment of nonperturbative regions and recent results on azimuthal asymmetries.
Findings
Summary of TMD factorization and evolution methods
Discussion on nonperturbative region treatment
Recent results on azimuthal asymmetries
Abstract
Transverse momentum dependent parton distributions (TMDs) appear in many scattering processes at high energy, from the semi-inclusive DIS experiments at a few GeV to the Higgs transverse momentum distribution at the LHC. Predictions for TMD observables crucially depend on TMD factorization, which in turn determines the TMD evolution of the observables with energy. In this contribution to SPIN2014 TMD factorization is outlined, including a discussion of the treatment of the nonperturbative region, followed by a summary of results on TMD evolution, mostly applied to azimuthal asymmetries.
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