Impact Parameter Dependent Parton Distributions for a Relativistic   Composite System
  We investigate the impact parameter dependent parton distributions for a relativistic composite system in light-front framework. We express them in terms of overlaps of light-cone wave functions for a self consistent two-body spin-1/2 state, namely an electron dressed with a photon in QED. The pdfs are distorted in the transverse space for transverse polarization of the state at one loop level. 
D. Chakrabarti, A. Mukherjee