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

摘要

We propose a novel approach to incorporate the proton-proton (pp) Coulomb force into thethree-nucleon (3N) Faddeev calculations. The main new ingredient is a 3-dimensional screened pp Coulombt-matrix obtained by a numerical solution of the 3-dimensional Lippmann-Schwinger (LS) equation. Wedemonstrate numerically and provide analytical insight that the elastic proton-deuteron (pd) observablescan be determined directly from the resulting on-shell 3N amplitude increasing the screening radius. Thescreening limit exists without the need of renormalisation not only for observables but for the elastic pdamplitude itself.