An improved relativistic OBEP, two-nucleon and infinite nuclear matter data

A momentum-space OBEP consisting of π, η, ϱ, ω, φ, σ and δ-meson exchange is presented. Compared to a former paper (OBEP (I)) we refine the cut-off description and try to use more realistic values of the coupling constants. The quality of the resulting phase shift fit and the deuteron data is good (χ²/datum = 2.7) and comparable to OBEP (I). The nuclear matter data calculated in exactly the same way as in the case of OBEP (I) are improved (now 11.2 MeV at k_F = 1.47 fm^-1 compared to 12.4 MeV at k_F = 1.55 fm^-1 for OBEP (I)), since the saturation density is consid lowered without losing too much binding.