Proton and Pion Spectra from Proton-Proton Interactions at 10, 20, and 30 BeV/<i>c</i>

Abstract

The secondary proton and pion spectra from proton-proton interactions have been measured over nearly the entire momentum range and over a wide range of laboratory angles. Most of the data are at an incident-proton momentum of 30 BeV/c.The proton spectra were transformed into cross sections in terms of ${{p}_{\ensuremath{\perp}}}^{*}$ and ${{p}_{\ensuremath{\parallel}}}^{*}$ all in the c.m. system. These cross sections were found to be largely independent of ${{p}_{\ensuremath{\parallel}}}^{*}$ and an empirical fit was obtained quite similar to one derived by Hagedorn using a statistical model. The pion spectra were also expressed in terms of ${{p}_{\ensuremath{\perp}}}^{*}$ and ${{p}_{\ensuremath{\parallel}}}^{*}$ and found to be different from the proton spectra by showing a marked dependence on ${{p}_{\ensuremath{\parallel}}}^{*}$.