ASYMPTOTIC BEHAVIOUR OF FORM FACTOR AND INVARIANT DESCRIPTION OF PARTICLE SPATIAL DISTRIBUTION

摘要

It Is shown that transition from the standard parameterization of electromagnetic current to the parametrization by the relativistic spin vector allows one to make a physical interpretation of a form factor in the rest frame of a particle (and not neces¬sarily in the Brett frame!). A spatial dist¬ribution of particles is described in the configurationally representation to which one goes over using expansions over unitary rep-resentations of the Lorentz group. For the proton form factor we have found a formula which gives the correct "almost dipole" asymptotical behavior for its form factor.