Nucleon and Nuclear Cross Sections for Positive Pions and Protons above 1.4 Bev/c

Abstract

Total (${\pi }^{+}, p$) and ($p, p$) cross sections in the momentum range 1.4 to 4.0 Bev/c are presented. These measurements, with an accuracy of approximately 2%, were made at the Berkeley Bevatron by using counter techniques. Pions were distinguished from protons by means of a gas-filled Čerenkov counter. The (${\pi }^{+}, p$) total cross section was found to be almost constant above 2.0 Bev/c at a value near 29 mb. The ($p, p$) cross section decreases gradually from 47.5 mb to 41.7 mb over the momentum range covered.