Production of Charged Pions from Hydrogen and Carbon

Abstract

The cross sections and energy spectra of pions produced in the reactions $P+P\to {\pi }^{+}+D$ and $P+P\to {\pi }^{+}+N+P$ have been measured at three angles using 400-Mev protons. Both reactions contribute about equally to the total cross section. The total cross section is (4±1) mb and the angular distribution is proportional to ($0.15\pm 0.06+{cos}^2\theta$).