  In the framework chiral SU(3) quark model, the baryon spectra within the band
of $N\leq 2$ are studied, and the effect of the confining potential in
different configurations, namely the $\Delta$-mode and Y-mode are compared. In
the same way, the baryon spectra in the extended chiral SU(3) quark model, in
which additional vector meson exchanges are introduced, are also calculated. It
is shown that a reasonable baryon spectrum in the chiral SU(3) quark model can
be achieved no matter whether the $\Delta$-mode or the Y-mode confining
potential is employed. In the extended chiral SU(3) quark model, several energy
levels are further improved. The resultant binding energies of excited baryon
states in different confining modes deviate just by a few to several tens MeV,
and it is hard to justify which confining mode is the dominant one. The
non-strange baryon strong decay widths are further discussed in the point-like
meson emission model by using the wave-function obtained in the spectrum
calculation. The resultant widths can generally explain the experimental data
but still cannot distinguish which confining mode is more important in this
simple decay mode.

High Energy Physics - Phenomenology