  Inclusive cross sections for Xi^- hyperon production in high-energy Sigma^-,
pi^- and neutron induced interactions were measured by the experiment WA89 at
CERN. Secondary Sigma^- and pi^- beams with average momenta of 345 GeV/c and a
neutron beam of average momentum 65 GeV/c were produced by primary protons of
450 GeV/c from the CERN SPS. Both single and double differential cross sections
are presented as a function of the transverse momentum and the Feynman variable
x_F. A strong leading effect for Xi^- produced by Sigma^- is observed. The
influence of the target mass on the Xi^- cross section is explored by comparing
reactions on copper and carbon nuclei.
