Relativistic Quark Model Based Description of Low Energy NN Scattering

Abstract

A description of the NN scattering is constructed starting from the $\pi ,\eta ,{\eta }^{\prime }$ pseudoscalar-, the $\rho ,\varphi ,\omega$ vector-, and the $\epsilon (600),a_0,f_0(1400)$ scalar - meson-nucleon coupling constants, which we obtain within a relativistic quark model. Working within the Blankenbecler-Sugar-Logunov-Tavkhelidze quasipotential dynamics we thus describe the NN phase shifts in a relativistically invariant way. In this procedure we use the phenomenological form factor cutoff masses and the effective $\epsilon$ and $\omega$ meson-nucleon coupling constants, only. The comparison of our NN phase shifts to the both empirical data and the Bonn OBEP fit shows good agreement -- the ratio of the ${\chi }^2$ for the present results to the ${\chi }^2$ for Bonn OBEP description is 1.2.

Comments: 20 LaTeX pages, 2 postscript figures are available on request. Preprint IPSAS-RA-9401