A model describing the NN scattering phase shifts is developed. Two nucleon interactions induced by meson exchange forces are constructed starting from π, η, η′ pseudoscalar-, the ρ, ϕ, ω vector-, and the ε(600), a0, f0(1400) scalar — meson–nucleon coupling constants, which we obtained within a relativistic quantum field theory based quark model. Working within the Blankenbecler–Sugar–Logunov–Tavkhelidze quasipotential dynamics, we describe the NN phase shifts in a relativistically invariant way. In this procedure we use phenomenological form factor cutoff masses and effective ε and ω meson–nucleon coupling constants, only. Resulting NN phase shifts are in a good agreement with both, the empirical data, and the entirely phenomenological Bonn OBEP model fit. While the quality of our description, evaluated as a ratio of our results to the Bonn OBEP model χ2 ones is about 1.2, other existing (semi)microscopic results gave qualitative results only.
Study of the heavy molecular states in the quark model with meson exchange interaction
