The nucleon-nucleon interaction is described over the laboratory scattering energy range 0-350 MeV by a potential used in conjunction with the Schrödinger equation. In momentum space the potential is a superposition of Born terms obtained from single exchanges of $\omega$, $\rho$, $\pi$, $\eta$, ${\sigma }_0$, and ${\sigma }_1$ mesons, where the ${\sigma }_0$ and ${\sigma }_1$ are hypothetical scalar mesons with isotopic spin 0 and 1, respectively. Rather than taking the usual static limit, all terms of order $\frac{p^2}{M^2}$ are retained. The inclusion of $S$ waves requires the introduction of a cutoff factor. The meson coupling constants, the masses of the ${\sigma }_0$ and ${\sigma }_1$, and a cutoff parameter are adjusted to fit the experimentally determined phase parameters. A comparison with experimental phase-shift analysis shows a good qualitative fit, on the average.

• Received 19 February 1968

DOI:https://doi.org/10.1103/PhysRev.177.1435