Antiproton annihilation at rest in nitrogen and deuterium gas

Results on antiproton absorption at rest in gaseous nitrogen and deuterium are presented from an analysis of approximately ${10}^6$ events each taken with a magnetic spectrometer. Inclusive features such as pion and proton multiplicities and spectra are presented. Data relating to absorption modes requiring more than one nucleon, such as the Λ yield, the Λ spectrum, and the exclusive deuterium channels p¯d→${\pi }^{\mathrm{-}}$p, Λ$K^{+}$ ${\pi }^{\mathrm{-}}$ are discussed. The fully reconstructable channels p¯d→${\mathrm{\pi }}^{+}$ ${\mathrm{\pi }}^{\mathrm{-}}$ ${\mathrm{\pi }}^{\mathrm{-}}$p,${\mathrm{\pi }}^{+}$ ${\mathrm{\pi }}^{+}$ ${\mathrm{\pi }}^{\mathrm{-}}$ ${\mathrm{\pi }}^{\mathrm{-}}$ ${\mathrm{\pi }}^{\mathrm{-}}$p also show a high-energy proton tail unaccounted for by single nucleon rescattering mechanisms.