Observation of μ−e− events in neutrino interactions at 3–30 GeV neutrino energy

Abstract

The production of μ − e − pairs is studied in interactions of neutrinos with nuclei of heavy freon in the SKAT bubble chamber experiment. A rate of μ − e − pairs to charged current interactions of R μ − e − =(2.5± 1.4 4.3)×10 −4 is found at an average neutrino energy of 10 GeV. The ratio μ − e −/ μ − e + comes out to be μ − e −/ μ − e + = 0.12± 0.08 0.22.