Book Description

The cross sections are measured for K$sup -$p $Yields$ anti K$sup 0$n at 520 to 1060 MeV/c and for anti pp $Yields$ anti nn from 270 to 960 MeV/c with a typical point-to-point precision of about 1 percent. The cross sections in preliminary form are shown and discussed. It is suggested that the spin of the $Sigma$(1590) must be at least $sup 2$/$sub 3$ and that of a possible resonance at the bump at 475 MeV/c must be at least 4. (JFP).