Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2009-07-02
AIP Conf.Proc.1182:859-863,2009
Physics
High Energy Physics
High Energy Physics - Phenomenology
4 pages, invited talk at CIPANP09
Scientific paper
10.1063/1.3293944
Parton distributions in impact parameter space, which are obtained by Fourier transforming GPDs, exhibit a significant deviation from axial symmetry when target and/or quark are transversely polarized. In combination with the final state interactions, this transverse deformation provides a natural mechanism for naive-T odd transverse single-spin asymmetries in semi-inclusive DIS. The deformation of PDFs in impact parameter space can also be related to the transverse force acting on the active quark in polarized DIS at higher twist.
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