Form Factor of the Relativistic Two-particle System in the Relativistic Quasipotential Approach: The Case of Arbitrary Masses and Vector Current

Abstract

A new relativistic form factor for a bound two-particle system was obtained for the case of a vector current. The present consideration was performed within the relativistic quasipotential approach based on the covariant Hamiltonian formulation of quantum field theory by going over to the three dimensional relativistic configuration representation for the case of interaction between two relativistic spinless particles of arbitrary mass.