Speaker
Prof.
Dennis Sivers
(Portland Physics Institute)
Description
Single Spin Asymmetries in hard collision processes are associated with non-perturbative QCD dynamics leading to spin-directed momentum transfers. These non-perturbative spin-directed momentum transfers can occur either in an initial state or in the fragmentation leading to a final state particle. The dynamical mechanisms leading to single-spin asymmetries are parameterized either as higher-twist corrections in collinear factorization of the hard-scattering or as momentum-dependence in transverse-momentum-dependent distributions and fragmentation functions.
Primary author
Prof.
Dennis Sivers
(Portland Physics Institute)
