Article révisé par les pairs
Résumé : In the Gargamelle neutrino experiment, three unambiguous candidates for the reaction νμ+e-→νμe- have been observed corresponding to a cross section for a recoil electron energy within the range 0.3 < Ee- < 2.0 GeV of 0.06 × 10-41 Eν (GeV) cm2/electron. The calculated background is 0.44 ± 0.13 events and the probability that all three candidates could be due to this background is 1%. © 1976.