Neutron Fragmentation and Inclusive Charge Exchange inpdandπ+dInteractions at 195 GeV/c

An excess of negative particles and depletion of positive particles in the backward hemisphere (c.m. system) is observed in ${\pi }^{+}$ and $p$ interactions on neutron target. $\frac{d{\sigma }^{-}}{\mathrm{dy}}$ is compared with $\mathrm{pp}$ interactions and the difference is related to the slow-proton spectrum produced in the $\mathrm{pn}$ interactions. A neutron fragmentation component is observed and the inclusive charge-exchange probability at the nucleon vertex is found to be about 0.4.