  It has recently been proven from measurements of the spin-transfer
coefficients $D_{xx}$ and $D_{zz}$ that there is a small but non-vanishing
$\Delta S=0$ component $\sigma_{0}$, in the inclusive $p(p,n)N\pi\,$ reaction
cross section $\sigma\,$. It is shown that the dominant part of the measured
$\sigma_{0}$ can be explained in terms of the projectile $\Delta$ excitation
mechanism. An estimate is further made of contributions to $\sigma_{0}$ from
s-wave rescattering process. It is found that s-wave rescattering contribution
is much smaller than the contribution coming from projectile $\Delta$
excitation mechanism. The addition of s-wave rescattering contribution to the
dominant part, however, improves the fit to the data.
