Inelastic electron-nucleus interactions at 5 GeV detected by ARGUS

Beam-gas events taken with the ARGUS detector at thee+e−-storage ring DORIS-II have been used to study interactions ofe± at 5 GeV with light nuclei mainly16O. The selection ofe±16O events is discussed. The spectra of secondary protons and charged pions are found to be similar to those of hA interactions in accordance with the nuclear scaling. Measurements of like-particle (p p andπ π) correlations at small relative momenta were used to determine the radius of particle emission region ine±16O interactions. This radius proved to be equal within errors to the radius of particle emission region in hC interactions. No any narrow diproton resonance has been observed in the mass region from 1.9 to 2.2 GeV.