STUDY OF mu e EVENTS PRODUCED IN ANTI-NEUTRINOS INTERACTIONS

A study is presented of μe events from an exposure of BEBC, filed with an heavy H2/Ne mixture, to a wide band antineutrino beam at the CERN SPS. The prompt μ+e- rate, based on the observation of 45 events with pμ>4 GeV/c and pe>0.8 GeV/c, is found to be 0.31±0.05±0.02%, in agreement with previous determinations made on much smaller statistics. The differential kinematical variables characterizing the events and the content of strange particles are as expected for the production of charmed hadrons which subsequently decay semi-leptonically. An upper limit of 2.0±10-4 at 90% C.L. is given for the production rate of prompt μ+e+ events. No evidence is found for a significant production of Beauty hadrons. © 1984 Springer-Verlag.0SCOPUS: ar.jinfo:eu-repo/semantics/publishe