Abstract
Parton distributions in impact parameter space, which are obtained by Fourier transforming GPDs, exhibit a significant deviation from axial symmetry when the target and/or quark is 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 can also be related to the transverse force acting on the active quark in polarized DIS at higher twist.
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