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The concrete possibilities for a realistic simulation of the Nambu-Jona Lasino mechanism of dynamical mass generation are examined from the view-point of a Vector-type confining form of 4-fermion Lagrangian with a natural mass scale which substitutes for the canonical NJL-model of contact interaction, and is designed to keep a conscious link with spectroscopy. Such Lagrangians are known to lead (through the minimality condition on the effective Action) to both the Schwinger-Dyson and Bethe-Salpeter equations for the quark-mass operation {Sigma}({rho}) and the hadron-quark vertex function F{sub H}(q,P) respectively. With a choice of the interactions which corresponds to a Lorentz-covariant generalization of the familiar instantaneous approximation, the related Bethe-Salpeter equation already provides a good description of both q{bar q} and qqq spectra, as well a Lorentz covariant access to different types of transition amplitudes via quark loops, within a common dynamical framework. With this pre-calabration, the model is subjected to the interlinked SDE and BSE for testing some key aspects of the NJL-self consistency mechanism by evaluating some basic constants. The results are: m{sub NJL} = 300 Mev, M{sub {pi}}{sup 2} {approximately} m{sub c}; M{sub {sigma}} = 857 Mev; [q{bar q}]{sub 0} = (219 mev){sup 3}. From these values two independent estimates of m{sub c} are found as 21.8 and 17.8 (Mev).

Simulating NJL-mechanism with realistic vector-type confining Lagrangian