A search for slow massive particles with Z<=2 at the CERN Intersecting Storage Rings

Abstract A large scintillation counter telescope positioned at right angles to the crossing beams at the CERN ISR was used in a search for slow (stopping) massive particles with charges Z ⩽ 2. No events which could be unambiguously identified as being due to unknown particles were seen among 10 8 charged particles which passed through the telescope.