Asymptotic Behavior of the Deuteron Extra-Components in the Covariant Light Front Dynamics

Abstract

In the covariant formulation of the light-front dynamics, the wave function of two nucleon systems such as the deuteron or any N N scattering state depends on two variables, the relative momentum, k, and a unit vector, n [1]. This latter is related to the four-vector that allows one to separate in an invariant way two space-time events. Its appearance leads to the existence of extra-components in the wave function as compared to the usual non-relativistic wave functions. At first-sight, the arbitrariness in the orientation of this vector n introduces some uncertainty in the predictions. Practical ways to get rid of it in calculating observables have been proposed in the literature [2, 3, 4]. In this contribution we investigate how this n dependence is automatically removed in the observables related to the asymptotic behavior of the wave function.