A search for decays of heavy neutrinos

Bergsma, F.; Dorenbosch, J.; Jonker, M.; Nieuwenhuis, C.; Allaby, J. V.; Amaldi, U.; Barbiellini, G.; Barone, Luciano Maria; Berger, C.; Capone, Antonio; Flegel, W.; Lanceri, L.; Metcalf, M.; Panman, J.; Winter, K.; Abt, I.; Aspiazu, J.; Buesser, F. W.; Daumann, H.; Gall, P. D.; Niebergall, F.; Ranitzsch, K. H.; Schuett, P.; Staehelin, P.; Gorbunov, P.; Grigoriev, E.; Kaftanov, V.; Khovansky, V.; Rosanov, A.; Baroncelli, A.; Borgia, Bruno; Bosio, C.; Diemoz, M.; Dore, Ubaldo; Ferroni, Fernando; Longo, Egidio; Luminari, L.; Monacelli, P.; De Notaristefani, F.; Pistilli, P.; Santoni, C.; Tortora, L.; Valente, V.

doi:10.1016/0370-2693(83)90275-7

A search for heavy neutrinos was conducted in the neutrino beam produced by the 400 GeV proton beam-dump and in the 400 GeV wide-band neutrino beam at CERN. A heavy neutrino associated with the τ lepton was searched for in the beam-dump experiment. No assumption on the nature of heavy neutrinos was made in the wide-band beam experiment. A search was made for neutrinos decaying into two electrons and a light neutrino. Since no events were observed, an upper limit on the neutrino mixing angles as a function of the neutrino mass is derived.

A search for decays of heavy neutrinos / F., B., J., D., M., J., C., N., J. V., A., U., A., G., B., Barone, L.M., C., B., Capone, A., W., F., L., L., M., M., J., P., K., W., I., A., J., A., F. W., B., H., D., P. D., G., et al.. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - STAMPA. - 128:5(1983), pp. 361-366. [10.1016/0370-2693(83)90275-7]