A Poincaré Covariant Current Operator for Low and High Energy Phenomena
Within front-form dynamics and in the Breit frame where initial and final three-momenta of the system are directed along the z axis, Poincaré covariance constrains the current operator only through kinematical rotations around the z axis. Therefore, in this frame the current can be taken in the one-body form. Applications to deep inelastic structure functions in an exactly solvable model and to the deuteron magnetic form factor are presented.
KeywordsForm Factor Deep Inelastic Scattering Hadronic Tensor Lorentz Covariance Elastic Form Factor
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