Analysis ofγ−pReactions in a Hydrogen Bubble Chamber to 6.0 BeV: Cross Sections and Laboratory Distributions

This paper gives an account of the experimental arrangement, the beam properties, and the methods of data analysis for a study of photon reactions in hydrogen at energies up to 6 BeV. The values of cross sections as a function of photon energy are presented for $\gamma +p\to p+{\pi }^0$, $\gamma +p\to n+{\pi }^{+}$, $\gamma +p\to p+{\pi }^{+}+{\pi }^{-}$, $\gamma +p\to n+{\pi }^{+}+{\pi }^{+}+{\pi }^{-}$, $\gamma +p\to p+{\pi }^{+}+{\pi }^{-}+{\pi }^0$, $\gamma +p\to p+{\pi }^{+}+{\pi }^{+}+{\pi }^{-}+{\pi }^{-}$, and $\gamma +p\to \mathrm{}\left(\mathrm{strange}\mathrm{particles}\right)\mathrm{}$, as well as a lower limit for the $\gamma +p$ total cross section. In addition, momentum and angular distributions in the laboratory system are given for protons and charged pions from the non-strange-particle reactions.