P Astier, D Autiero, A Baldisseri, M Baldo-Ceolin… - Physics Letters B, 2001 - Elsevier
We report on a search for heavy neutrinos (ν4) produced in the decay Ds→ τν4 at the SPS
proton target followed by the decay ν4→ ντe+ e− in the NOMAD detector. Both decays are …