  We study the structure of the nuclear force by using a path-integral
hadronization approach in a chiral quark-diquark model. After the construction
of the chiral quark-diquark model, we hadronize it to obtain a meson-baryon
Lagrangian. The effective meson-baryon Lagrangian incorporates chiral symmetry
and the composite description of the mesons and baryons. Using the effective
meson-baryon Lagrangian we investigate the structure of the nuclear force in
the simple case of neglecting the axial-vector diquark. It is shown that the
meson-baryon Lagrangian contains two kinds of the nuclear force; the
meson-exchange interaction and a quark-diquark loop interaction. It is also
shown that the quark-diquark loop interaction consists of the scalar and vector
interactions. The properties of these interactions are discussed.
