Final State Interaction within the Bethe-Salpeter Approach in Charge Exchange pD->n(pp) process

The exclusive charge exchange reaction pD->n(pp) at intermediate and high energies is studied within the Bethe-Salpeter formalism. The final state interaction in the detected at zero-near excitation energy pp-pair is described by the 1S0 component of the Bethe-Salpeter amplitude. Results of numerical calculations of polarization observables and differential cross-section persuade that, as in the non relativistic case, this reaction can be utilized for a relativistic deuteron tensor polarimeter and as a source of information about the elementary nucleon-nucleon charge exchange amplitude.