A novel treatment of the proton-proton Coulomb force in proton-deuteron Faddeev calculations: Breakup

We extend our approach to incorporate the proton-proton ( pp Coulomb force into the three-nucleon (3 N Faddeev calculations from elastic proton-deuteron ( pd scattering to the breakup process. The main new ingredient is a 3-dimensional screened pp Coulomb t -matrix obtained by a numerical solution of the 3-dimensional Lippmann-Schwinger (LS) equation. We demonstrate numerically that the proton-deuteron ( pd breakup observables can be determined from the resulting on-shell 3 N amplitudes increasing the screening radius. However, contrary to the pd elastic scattering, the screening limit exists only after renormalisation of the pp t -matrices.