An experiment designed to study the ${\pi }^{-}p$ total neutral cross section and its breakdown into several channels has been performed at eleven incident pion momenta ranging from 654 to 1247 MeV/c. Angular distributions for the charge exchange ${\pi }^0$ and for ${\eta }^0$ production are given in terms of Legendre-polynomial expansion coefficients. Forward and backward differential cross sections are presented for the charge-exchange channel and comparisons with recent dispersion-relation predictions for the forward cross section are made.

• Received 2 June 1969

DOI:https://doi.org/10.1103/PhysRev.187.1827