Observation of e ± in the inelastic e + A interaction

Results of observation and analysis of e ± appearing in the interaction of 32-GeV positrons with nuclear emulsion have been reported. The angular distributions of particles have been measured in the range of 0°–180°. The energy of particles has been measured in the angular range of 145°–180° and values of the Bjorken variable x B have been calculated. The distribution in x B corresponds to values smaller than unity at Q 2 > 7.0 (GeV/s)2. This means that e ± with energies lower than 250 MeV cannot be attributed to multinucleon correlations.